2005 YU55 Goldstone Radar Observations Planning


Goldstone Images from November 10 (3.75 m x 0.015 Hz)


Goldstone Images from November 9 (3.75 m x 0.015 Hz)





Background


Asteroid 2005 YU55 was discovered by Spacewatch on December 28, 2005.
It will approach Earth within 0.85 lunar distances (0.00217 AU) on
November 8, 2011, when it will be an extraordinarily strong radar target.
2005 YU55 has an absolute magnitude of 21.9, and imaging at Arecibo in 2010
revealed that the asteroid has a rounded  shape with a diameter of about 
400 meters.

The 2011 approach is the closest known by an asteroid with an absolute magnitude
this bright since 2010 XC15 (H = 21.4) approached within 0.5 lunar distances in 1976,
and until 2028, when 2001 WN5 (H = 18.2) will approach within 0.65 lunar distances,
and as such, it represents an invaluable scientific opportunity.  
Our finest range resolution at Goldstone is 3.75 m, 
which should reveal a wealth of detail about the asteroid's surface features,
shape, dimensions, and other physical properties.

The signal-to-noise ratios (SNRs) will be more than 1 million per round-trip time for
Goldstone observations on November 8-9.
As a result of the very high SNRs, we are planning to utilize the highest
resolution available from the chirp system, which should place thousands 
of pixels on the object and reveal considerable surface detail. The radar
resolution will be orders of magnitude more detailed than is possible
with any ground- or space-based optical telescope and is comparable to 
what can be obtained by a spacecraft flyby mission.

Due to the outstanding scientific potential presented by this event, we are
planning an extensive campaign of monostatic and bistatic radar observations
with Goldstone DSS-14, DSS-13, Arecibo, the Very Long Baseline Array, and the 
Green Bank Telescope.  The very short round-trip light travel times (only 2.2 seconds)
on dates surrounding the closest approach require that some observations will be bistatic.

On November 11 we will also conduct a brief intercontinental bistatic experiment
in which DSS-14 will transmit and our colleauges Stelio Montebugnoli, Guiseppe Pupillo,
and Emma Salerno will attempt to receive echoes with the 32 meter antenna at
Medicina, Italy (near Bologna).

2005 YU55 is observable at useful SNRs at Goldstone for more than three
weeks starting in late October.  It will approach from the south and Goldstone 
can observe it for at least one week before it enters Arecibo's declination window 
on November 8.  

The pointing uncertainties will expand considerably during the extremely
close approach, so we have scheduled multiple Goldstone
tracks prior to November 7 so we can track it and improve the orbit while the uncertainties 
are still small.  This will also extend the sky motion substantially relative 
to what will be possible after closest approach, and will greatly facilitate estimation of the
asteroid's pole direction and 3D shape.  2005 YU55 is a slow rotator, so in
order to see as much of its surface as possible and to take full advantage of this
opportunity, we have scheduled several Goldstone tracks that are at least five hours long.

Michael Busch (UCLA) is planning to observe this object with transmissions from Arecibo 
and reception of radar speckles at the Pie Town, Los Alamos, Kitt Peak, and Fort Davis 
stations of the Very Long Baseline Array.  Those observations could provide the asteroid's 
sense of rotation and pole direction independently of delay-Doppler radar imaging (this 
is a new technique).

Arecibo observations in April, 2010 improved the orbit substantially and removed
this object from the NASA Near-Earth Object Program's "Risk Page" of potential impactors.
This is described briefly in an article that appeared on Asteroid Watch, 
in another short article by Mike Nolan on the website at Arecibo, 
and in a third article by Emily Lakdawalla at the Planetary Society.

The Arecibo observations in 2010 also revealed that 2005 YU55 has 
a rotation period of approximately 18 hours (assuming that the subradar latitude was
close to equatorial); that its circular polarization ratio is about 0.4, indicating a
a moderately rough near-surface compared with other
near-Earth asteroids; that its surface is darker than charcoal at optical wavelengths;
and that it has a relatively bright radar reflectivity of ~20%.

The closest approach occurs just before the date boundary between Nov. 8-9, when 2005 YU55
will move up to 8.6 degrees during the hour between Nov. 8 23:00 - Nov. 9 00:00 UTC.  
To place that in perspective, the angular width of the Moon is about 0.5 degrees, so
YU55 will move 17 lunar diameters per hour or about 0.3 lunar diameters per minute.
Motion this rapid will easily be observable in small telescopes with apertures
of roughly 15 cm and larger (at this time the asteroid should reach 11th or 12 magnitude).

2005 YU55 will approach Earth from the direction of the Sun, so it won't
be visible at night until November 8.  Afterward, it will move directly away
from Earth, approximately 180 degrees from its approach trajectory.
Radar observations provide their own illumination, so both Goldstone and Arecibo
will be able to observe the asteroid during the day prior to Nov. 9.

2005 YU55 will also be the subject of intensive observations with spectroscopy, photometry,
and infrared radiometry beginning on the night of November 8/9.

The November, 2011 issue of Sky and Telescope magazine features a full-page article on p. 53
that describes the 2011 flyby and provides finder charts for locating the asteroid.

Here is a link to an animation prepared by Jon Giorgini (JPL) that shows the motion 
of 2005 YU55 in the vicinity of the Earth and Moon during the flyby:
Flyby Animation

2005 YU55 will also encounter the Moon 8 hours after its flyby with Earth, and somewhat
closer at 0.62 Earth-Moon distances.

This asteroid also closely approaches Venus, most notably within
0.0019 AU (0.74 lunar distances) in 2029. The uncertainties will 
increase substantially afterward, so that by the time of the next 
potential encounter with Earth in 2041, the asteroid's minimum 
distance could be anywhere between 0.002 AU and 0.3 AU.  
Radar astrometry obtained in Nov. 2011 should clarify 
the Earth encounter situation  in 2041 and beyond.
  

The 2011 encounter is the closest to Earth for at least the last 200 years.

Due to its size and proximity to Earth, the Minor Planet Center has
designated 2005 YU55 as a "Potentially Hazardous Asteroid."
Despite this designation, this object cannot hit Earth during the entire
interval over which its motion can be computed reliably.

Note to optical observers: We intend to provide radar astrometry shortly after
the November 4 Goldstone track through the JPL/Horizons online ephemeris system.
This should shrink the uncertainies sufficiently for other observatories to
track this object once it enters the night sky on November 8.


Orbital and Physical Characteristics  
 orbit type               Apollo
 semimajor axis           1.143 AU     
 eccentricity             0.43
 inclination              0.5 deg
 perihelion distance      0.652 AU     
 aphelion distance        1.633 AU     
 absolute magnitude (H)  21.9
 diameter                ~0.4 km 
 rotation period        ~18 h         (based on Arecibo observations in April 2010)
 pole direction           unknown  
 lightcurve amplitude     relatively small
 spectral class           C           (M. D. Hicks et al., ATeL 2571, 2010; R. P. Binzel, pers. comm.) 


Close approaches by 2005 YU55 using radar astrometry obtained through 2011 Nov. 9: JPL/Horizons solution #96, #obs: 782 (2005-2011), radar = ( 7 delay,10 Dop.) Date (CT) Body CA Dist MinDist MaxDist Vrel TCA3Sg Nsigs P_i/p ---------------------- ----- ------- ------- ------- ------ ------ ------ ------- A.D. 2011 Nov 08.97846 Earth .002172 .002172 .002172 13.716 0.00 3.65E5 .000000 A.D. 2011 Nov 09.30173 Moon .001601 .001601 .001601 13.509 0.00 2.61E5 .000000 A.D. 2027 Oct 20.68395 Venus .087901 .087852 .087951 15.382 4.29 5108.9 .000000 A.D. 2029 Jan 19.86344 Venus .002316 .002286 .002346 11.115 8.43 2.57E5 .000000 A.D. 2030 Jun 01.09063 Venus .056782 .056613 .056953 9.239 139.56 7.63E5 .000000 A.D. 2045 Apr 25.12190 Earth .069526 .066575 .072504 11.609 222.61 53886. .000000 A.D. 2055 Jul 01.52540 Venus .029421 .027346 .031486 12.527 270.79 5.91E5 .000000 A.D. 2056 Nov 01.91886 Venus .071693 .071608 .071779 9.162 324.21 1.97E6 .000000 A.D. 2058 Feb 23.81760 Venus .099715 .099072 .100358 15.515 51.33 4.31E5 .000000 A.D. 2075 Nov 08.10588 Moon .002115 .001496 .017423 13.805 1371.4 21250. .000000 A.D. 2075 Nov 08.40224 Earth .001892 .001258 .017673 13.809 1129.9 17405. .000000 A.D. 2080 Nov 03.29458 Venus .062028 .040183 .318846 8.978 3.60E5 29090. .000000 A.D. 2085 May 18.67768 Mars .036596 .034912 .459031 5.415 2.66E5 8888.4 .000000 A.D. 2088 Dec 02.78706 Mars .098451 .034811 1.003056 7.026 45490. 10372. .000000 A.D. 2096 Mar 09.95104 Venus .066424 .059586 .643072 9.022 1.18E6 2.20E6 .000000 A.D. 2097 Apr 22.40402 Earth .041401 .004297 1.864916 14.880 1.54E5 7916.6 .000000 NOTE: post-epoch CA list was truncated due to Earth TCA3Sg exceeding the set limit. The approach in 2075 _may_ be closer than the one in 2011: The nominal 2075 close approach is at only 0.74 Earth-Moon distances.
Close approaches by 2005 YU55 using radar astrometry obtained through 2011 Nov. 7: Date (CT) Body CA Dist MinDist MaxDist Vrel TCA3Sg Nsigs P_i/p ---------------------- ----- ------- ------- ------- ------ ------ ------ ------- A.D. 2011 Nov 08.97846 Earth .002172 .002172 .002172 13.716 0.00 7.15E5 .000000 A.D. 2011 Nov 09.30173 Moon .001601 .001601 .001601 13.509 0.00 5.26E5 .000000 A.D. 2027 Oct 20.68352 Venus .087908 .087858 .087957 15.382 4.27 6076.4 .000000 A.D. 2029 Jan 19.86265 Venus .002312 .002282 .002341 11.116 8.39 2.63E5 .000000 A.D. 2030 Jun 01.07755 Venus .056805 .056630 .056982 9.238 144.09 8.06E5 .000000 A.D. 2045 Apr 25.09980 Earth .069118 .066061 .072204 11.621 230.60 56809. .000000 A.D. 2055 Jul 01.49947 Venus .029704 .027577 .031821 12.540 276.73 5.71E5 .000000 A.D. 2056 Nov 01.89323 Venus .071705 .071615 .071796 9.162 339.48 2.08E6 .000000 A.D. 2058 Feb 23.82277 Venus .099801 .099171 .100431 15.520 49.94 4.61E5 .000000 A.D. 2075 Nov 08.50994 Earth .003857 .001258 .020109 13.824 1141.2 18587. .000000 A.D. 2080 Sep 17.87259 Venus .075000 .001369 1.367210 14.609 1.42E5 36303. .000000 A.D. 2082 Feb 07.15931 Venus .045663 .037569 1.218542 9.561 4.71E5 3.14E5 .000000 A.D. 2089 Feb 28.44932 Mars .044200 .037537 1.099940 5.914 3.48E5 1.20E5 .000000 A.D. 2089 Nov 05.25991 Earth .052266 .001624 2.806791 12.096 2.24E5 25967. .000000 NOTE: post-epoch CA list was truncated due to Earth TCA3Sg exceeding the set limit.
Close Approaches by 2005 YU55 During 1782-2041 Using Astrometry Obtained Before the 2011 Radar Observations
Last update: 2011 Dec 14

Discovery M.P.E.C.

M.P.E.C. 2005-Y47                                Issued 2005 Dec. 29, 12:43 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

                  Supported in part by the Brinson Foundation
                  Supported in part by the TABASGO Foundation
             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2005 YU55

Observations:
     K05Y55U*FC2005 12 28.25072 06 53 24.60 +24 10 07.5          21.4 V EY047691
     K05Y55U FC2005 12 28.26806 06 53 21.19 +24 10 11.7          21.4 V EY047691
     K05Y55U FC2005 12 28.28596 06 53 17.67 +24 10 16.8          21.4 V EY047691
     K05Y55U  C2005 12 28.48219 06 52 38.22 +24 11 02.9          22.1 V EY047291
     K05Y55U  C2005 12 28.48684 06 52 37.26 +24 11 04.2          22.1 V EY047291
     K05Y55U HC2005 12 28.49159 06 52 36.38 +24 11 03.1                 EY047291
     K05Y55U  C2005 12 29.17693 06 50 25.10 +24 13 51.3                 EY047734
     K05Y55U  C2005 12 29.18029 06 50 24.62 +24 13 52.0          22.6 V EY047291
     K05Y55U  C2005 12 29.18483 06 50 23.78 +24 13 53.4          21.7 V EY047291
     K05Y55U  C2005 12 29.18916 06 50 22.89 +24 13 54.7          21.6 V EY047291
     K05Y55U  C2005 12 29.19906 06 50 20.72 +24 13 54.7                 EY047734
     K05Y55U  C2005 12 29.22125 06 50 16.26 +24 14 01.7          20.7 R EY047734

Observer details:
291 LPL/Spacewatch II.  Observer J. V. Scotti.  1.8-m f/2.7 reflector + CCD.
691 Steward Observatory, Kitt Peak.  Observer R. S. McMillan.  0.9-m f/3
    reflector + CCD.
734 Farpoint Observatory.  Observer G. Hug.  Measurer D. Tibbets.  0.7-m
    reflector + CCD.

Orbital elements:
2005 YU55
Epoch 2005 Dec. 16.0 TT = JDT 2453720.5                 MPC
M 169.11098              (2000.0)            P               Q
n   0.89504426     Peri.  273.04385     +0.14266712     +0.98977053
a   1.0663662      Node     5.15848     -0.90533720     +0.13074975
e   0.3258279      Incl.    0.39490     -0.40001332     +0.05708585
P   1.10           H   22.4           G   0.15
From 12 observations 2005 Dec. 28-29.  E-assumed.

Ephemeris:
2005 YU55                a,e,i = 1.07, 0.33, 0                   q = 0.7189
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2005 12 26    07 00.57   +24 00.1    0.434    1.414   170.3     6.7    21.8
2006 01 05    06 28.15   +24 34.0    0.432    1.412   171.9     5.6    21.8
2006 01 15    05 58.46   +24 38.7    0.452    1.406   155.0    17.2    22.3
2006 01 25    05 36.65   +24 24.7    0.490    1.395   139.9    27.0    22.8
2006 02 04    05 24.38   +24 07.7    0.540    1.379   126.9    34.8    23.2
2006 02 14    05 20.85   +23 56.5    0.596    1.359   116.0    40.8    23.5
2006 02 24    05 24.30   +23 52.2    0.653    1.333   106.7    45.3    23.8

Timothy B. Spahr             (C) Copyright 2005 MPC           M.P.E.C. 2005-Y47

SNR Calculation

Target Name:      2005 YU55
HMag:             21.9
Diameter:          0.4 km   Based on Arecibo observations in 2010
Period:           18 h      Based on Arecibo observations in 2010 
OC radar albedo:   0.2      Based on Arecibo observations in 2010
subradar lat:      0 deg (a standard guess)
radar horizon:    20 deg

The best dates for Goldstone observations are between November 3-11.
Here are estimated monostatic signal-to-noise ratios at Goldstone.  We 
will need bistatic observations with reception at  DSS-13 during the closest approach 
on Nov 07-10.  For bistatic observations, estimated monostatic SNRs 
should be divided by 4.

Goldstone SNRs
                                UTC              Distance    #       SNR/   SNR/
   Date        DOY     Week Rise  Set     RA  Dec   AU      runs     date   run
--------------------------------------------------------------------------
2011 Oct 30    303      43  16:37-23:15   221 -16  0.073    160      120      10
2011 Oct 31    304      44  16:33-23:12   221 -16  0.065    180      190      16
2011 Nov 01    305      44  16:30-23:10   221 -16  0.057    205      320      25
2011 Nov 02    306      44  16:28-23:08   222 -16  0.049    237      590      42
2011 Nov 03    307      44  16:25-23:07   222 -16  0.041    282     1200      79
2011 Nov 04    308      44  16:24-23:06   223 -16  0.033    347     2900     170
2011 Nov 05    309      44  16:23-23:09   224 -16  0.025    452     8500     440
2011 Nov 06    310      44  16:26-23:18   227 -15  0.017    645    39000    1700
2011 Nov 07    311      45  16:39-23:53   233 -14  0.009   1134    4.6E5   15000  Short RTT necessitates bistatic observations
2011 Nov 08-9  312-313  45  18:31-10:14   336 +17  0.002   4155    9.6E7   1.6E6  Short RTT necessitates bistatic observations
2011 Nov 10    314      45  01:00-11:38    27 +18  0.010   1520    3.8E5   11000  Short RTT necessitates bistatic observations
2011 Nov 11    315      45  01:27-11:50    33 +17  0.018    921    41000    1500 
2011 Nov 12    316      45  01:34-11:53    35 +17  0.026    661     9900     420
2011 Nov 13    317      45  01:36-11:52    36 +17  0.034    516     3500     170
2011 Nov 14    318      46  01:35-11:51    37 +17  0.042    422     1500      79
2011 Nov 15    319      46  01:34-11:49    37 +17  0.050    357      760      43
2011 Nov 16    320      46  01:31-11:46    38 +17  0.058    310      420      26
2011 Nov 17    321      46  01:29-11:43    38 +17  0.066    273      250      16
2011 Nov 18    322      46  01:26-11:40    38 +17  0.074    244      160      11

Arecibo SNRs 
horizons =  70.3 deg
Ptx      = 900 kW
Bold marks requested tracks
                                                            Monostatic
                          UTC                Distance    #  SNR/   SNR/
   Date        DOY     Rise  Set     RA  Dec    AU     runs date   run
--------------------------------------------------------------------------
2011 Nov 08    312     19:14-21:48   283  +2  0.002   478  6.9E8  3.5E7  Short RTT necessitates bistatic observations
2011 Nov 10    314     01:29-04:20    26 +18  0.009   392  6.0E6  3.2E5  Short RTT necessitates bistatic observations
2011 Nov 11    315     01:54-04:40    32 +18  0.017   240  5.5E5  37000
2011 Nov 12    316     02:00-04:45    35 +17  0.025   174  1.2E5   9800
2011 Nov 13    317     02:01-04:46    36 +17  0.033   136  42000   3700
2011 Nov 14    318     02:00-04:45    37 +17  0.041   112  18000   1800
2011 Nov 15    319     01:59-04:43    37 +17  0.049    94   8800    950
2011 Nov 16    320     01:56-04:41    38 +17  0.057    82   4900    560
2011 Nov 17    321     01:54-04:38    38 +17  0.065    72   2900    350
2011 Nov 18    322     01:51-04:35    38 +17  0.073    64   1800    230
2011 Nov 19    323     01:48-04:32    38 +17  0.081    58   1200    160
2011 Nov 20    324     01:44-04:29    39 +17  0.089    52    810    120
2011 Nov 21    325     01:41-04:25    39 +17  0.097    48    570     85
2011 Nov 22    326     01:38-04:22    39 +17  0.105    44    410     64
2011 Nov 23    327     01:34-04:19    39 +17  0.113    42    310     49
2011 Nov 24    328     01:31-04:15    39 +17  0.121    38    230     39

Track Assignments


GOLDSTONE TRACKS
           UT        UT       Local time             Duration  Round-trip
DOY  Week  Date    TX Window  TX Window              hh:mm     time (sec)  SNR/RTT
---  ----  ----    ---------  ---------              --------  ----------  -------
308   44   Nov 04  1630-1825  0930-1125 PDT Nov 04    1:55       33          170  monostatic and bistatic observations with DSS-13
310   44   Nov 06  1700-2300  0900-1500 PST Nov 06    6:00       17         1700  monostatic and bistatic observations with DSS-13
311   45   Nov 07  1905-2345  1105-1545 PST Nov 07    4:40        9        15000  bistatic observations with DSS-13
313   45   Nov 09  0130-0700  1730-2300 PST Nov 08    5:30        2.4     1.6E06  bistatic observations with DSS-13
                   0710-0900  Europa (J. L. Margot, PI)
314   45   Nov 10  0510-0950  2110-0150 PST Nov 09-10 4:50       10        11000  bistatic observations with DSS-13
315   45   Nov 11  0130-0700  1730-2300 PST Nov 10    5:30       18         1500  monostatic and bistatic observations with DSS-13
                   0710-0850  Europa (J. L. Margot, PI)
The switch to Standard Time occurs on November 6, so the Goldstone track on Nov. 4 will
occur during Daylight Saving Time.   All the other tracks will occur during Standard Time.
On Nov. 9 and 11 we observe Europa (J. L. Margot, PI) immediately after observing 2005 YU55.


GOLDSTONE-MEDICINA TRACK
           UT        UT       Local time             Duration  Round-trip
DOY  Week  Date    TX Window  TX Window              hh:mm     time (sec)  
---  ----  ----    ---------  ---------              --------  ---------- 
315   45   Nov 11  0130-0145  1730-1745 PST Nov 10   00:15      18
(total overlapping view period: 0130-0415 UT)


ARECIBO TRACKS
These are dates and times requested.
     UT      UT           PST               AST                  Duration  Round-trip  Monostatic
DOY  Date    TX Window    TX Window         TX Window            hh:mm     time (sec)  SNR/Run 
---  ----    ---------    ---------         ---------            --------- -------     -------
312  Nov 08  1914-2148    1114-1348 Nov 08  1514-1748 Nov 08     02:43      2.4        3.5E07   bistatic with Green Bank
314  Nov 10  0129-0420    1729-2020 Nov 09  2129-0020 Nov 09-10  02:53      9.2        3.2E05   bistatic with Green Bank 
315  Nov 11  0154-0440    1754-2040 Nov 10  2154-0040 Nov 10-11  02:49     17.0        37000    bistatic with Green Bank
316  Nov 12  0200-0445    1800-2045 Nov 11  2200-0045 Nov 11-12  02:48     24.8         9800    bistatic with Green Bank
317  Nov 13  0201-0446    1801-2046 Nov 12  2201-0046 Nov 12-13  02:47     32.7         3700
318  Nov 14  0200-0445    1800-2045 Nov 13  2200-0045 Nov 13-14  02:47     40.6         1800
.
.
323  Nov 19  0146-0433    1746-2033 Nov 18  2146-0033 Nov 18-19  02:47     80.4          160

Goldstone/Arecibo overlap (only one date):
315  Nov 11  0154-0440    1754-2040 Nov 10  2154-0040 Nov 09-10  2:49


Arecibo-VLBA Tracks
     UT      UT           PST               AST
DOY  Date    TX Window    TX Window         TX Window
---  ----    ---------    ---------         --------- 
315  Nov 11  0200-0441    1800-2041 Nov 10  2200-0041 Nov 10-11 
316  Nov 12  0203-0453    1803-2053 Nov 11  2203-0053 Nov 11-12
317  Nov 13  0207-0448    1807-2048 Nov 12  2207-0048 Nov 12-13
20 minute blocks during each date.


Arecibo-GBT Tracks
     UT      UT           PST               AST
DOY  Date    TX Window    TX Window         TX Window
---  ----    ---------    ---------         --------- 
312  Nov 08  1914-2148    1114-1348 Nov 08  1514-1748 Nov 08
314  Nov 10  0129-0420    1729-2020 Nov 09  2129-0020 Nov 09-10
315  Nov 11  0154-0440    1754-2040 Nov 10  2154-0040 Nov 10-11
316  Nov 12  0200-0445    1800-2045 Nov 11  2200-0045 Nov 11-12



DSS-14/DSS-43 Common View Periods
It's possible that we may do bistatic DSS-14/DSS-43 (Goldstone-Canberra) bistatic observations.
To facilitate planning, here are common view periods using times actually scheduled at DSS-14.
This assumes horizons = 20 deg at DSS-14 and 15 deg at DSS-43
DOY    Date     Start Stop
308    Nov 04   No overlap
310    Nov 06   20:41-23:00
311    Nov 07   21:09-23:50
313    Nov 09   07:10-09:00 
314    Nov 10   09:00-09:50
315    Nov 11   No overlap


Uncertainties


From Jon Giorgini, Nov 09 2011:
Including last night's post-encounter Doppler, 2005 YU55
solution #86 was estimated.  Formal 3-sigma uncertainties:
 
 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2011-Nov-10 00:00       2.926        0.20        0.71       0.000016
 2011-Nov-11 00:00       1.518        0.05        0.18       0.000013
 2011-Nov-12 00:00       1.018        0.02        0.06       0.000012
 2011-Nov-13 00:00       0.764        0.01        0.03       0.000012
 2011-Nov-14 00:00       0.610        0.01        0.03       0.000012
 2011-Nov-15 00:00       0.507        0.01        0.04       0.000013
 2011-Nov-16 00:00       0.434        0.01        0.05       0.000013
 2011-Nov-17 00:00       0.379        0.01        0.05       0.000013
 2011-Nov-18 00:00       0.336        0.01        0.05       0.000014
 2011-Nov-19 00:00       0.301        0.02        0.06       0.000015
 2011-Nov-20 00:00       0.273        0.02        0.06       0.000015

From Jon Giorgini, Nov 07 2011, Solution #78: Formal 3-sigma uncertainties for Nov 09 track: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2011-Nov-09 01:30 10.322 1.25 0.000011 2011-Nov-09 02:30 9.815 1.32 0.000011 2011-Nov-09 03:30 9.214 1.35 0.000010 2011-Nov-09 04:30 8.579 1.31 0.000010 2011-Nov-09 05:30 7.954 1.22 0.000010 2011-Nov-09 06:30 7.363 1.12 0.000009

From Jon Giorgini, Nov 06 2011, Solution #76: Including two new Dopplers and 3 delays from Goldstone, here are formal 3-sigma X-band uncertainties at 30 minute steps: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2011-Nov-07 19:00 3.981 1.94 0.000015 2011-Nov-07 19:30 4.050 2.00 0.000015 2011-Nov-07 20:00 4.121 2.06 0.000016 2011-Nov-07 20:30 4.194 2.14 0.000016 2011-Nov-07 21:00 4.269 2.22 0.000017 2011-Nov-07 21:30 4.346 2.32 0.000017 2011-Nov-07 22:00 4.426 2.42 0.000017 2011-Nov-07 22:30 4.509 2.54 0.000018 2011-Nov-07 23:00 4.594 2.67 0.000019 2011-Nov-07 23:30 4.682 2.81 0.000019 2011-Nov-08 00:00 4.773 2.96 0.000020

From Jon Giorgini, Nov 04 2011, Solution #72: Including the new Doppler and 2 delays from Goldstone, solution #72 3-sigma formal uncertainties are ... Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2011-Nov-03 00:00 1.752 0.08 0.28 0.000005 2011-Nov-04 00:00 2.126 0.05 0.19 0.000005 2011-Nov-05 00:00 2.685 0.02 0.08 0.000004 2011-Nov-06 00:00 3.615 0.13 0.46 0.000006 2011-Nov-07 00:00 5.461 0.47 1.72 0.000016 2011-Nov-08 00:00 10.733 2.29 8.34 0.000059 2011-Nov-09 00:00 21.029 0.98 3.58 0.000362 2011-Nov-10 00:00 10.262 2.18 7.91 0.000134 2011-Nov-11 00:00 5.638 0.54 1.97 0.000096 2011-Nov-12 00:00 3.934 0.19 0.69 0.000085 Future uncertainties are reduced to ~25% (or better) of the pre-experiment values. ----------------------------------------------------------------------------------------- From Jon Giorgini, Oct 29 2011, Solution #64, (765 optical measurements were reported by 61 observatories (2005-Dec-24 to 2010-Apr-20), and 3 delay and 4 Dopplers were reported from Arecibo (2010-Apr)) Formal 3-sigma X-band uncertainties are below: (arcsec) (Hz) (seconds) Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2011-Nov-03 00:00 5.980 1.61 0.000352 2011-Nov-04 00:00 7.207 1.25 0.000341 2011-Nov-05 00:00 9.036 0.60 0.000336 2011-Nov-06 00:00 12.053 0.93 0.000341 2011-Nov-07 00:00 17.963 5.09 0.000372 2011-Nov-08 00:00 34.238 26.05 0.000505 2011-Nov-09 00:00 70.935 101.68 0.001215 2011-Nov-10 00:00 35.842 28.45 0.000197 2011-Nov-11 00:00 19.227 6.54 0.000097 2011-Nov-12 00:00 13.289 1.99 0.000088 Uncertainties of the previous orbital solution - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Apparent Magnitudes and Solar Elongations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta S-O-T /r 2011-Oct-25 00:00 219.7 -16.1 n.a. 0.1208 11.3 /T 2011-Oct-26 00:00 219.8 -16.1 n.a. 0.1124 10.4 /T 2011-Oct-27 00:00 220.0 -16.1 n.a. 0.1041 9.6 /T 2011-Oct-28 00:00 220.1 -16.1 n.a. 0.0958 8.7 /T 2011-Oct-29 00:00 220.3 -16.1 n.a. 0.0876 7.8 /T 2011-Oct-30 00:00 220.4 -16.1 n.a. 0.0794 7.0 /T 2011-Oct-31 00:00 220.6 -16.1 n.a. 0.0713 6.1 /T 2011-Nov-01 00:00 220.9 -16.0 n.a. 0.0633 5.3 /T 2011-Nov-02 00:00 221.2 -16.0 n.a. 0.0553 4.6 /T 2011-Nov-03 00:00 221.6 -15.9 n.a. 0.0473 3.9 /T 2011-Nov-04 00:00 222.1 -15.8 n.a. 0.0393 3.4 /T 2011-Nov-05 00:00 222.9 -15.7 n.a. 0.0314 3.2 /T 2011-Nov-06 00:00 224.2 -15.4 n.a. 0.0236 3.5 /T 2011-Nov-07 00:00 226.8 -14.8 n.a. 0.0157 5.2 /T 2011-Nov-08 00:00 234.6 -13.0 n.a. 0.0080 12.0 /T 2011-Nov-09 00:00 310.2 11.4 11.68 0.0021 90.1 /T 2011-Nov-10 00:00 24.1 18.5 12.45 0.0083 160.4 /T 2011-Nov-11 00:00 31.7 17.6 13.68 0.0160 166.8 /T 2011-Nov-12 00:00 34.4 17.2 14.50 0.0238 168.3 /T 2011-Nov-13 00:00 35.7 17.0 15.12 0.0317 168.6 /T 2011-Nov-14 00:00 36.5 16.8 15.62 0.0396 168.3 /T 2011-Nov-15 00:00 37.0 16.8 16.05 0.0475 167.9 /T 2011-Nov-16 00:00 37.4 16.7 16.42 0.0555 167.2 /T 2011-Nov-17 00:00 37.7 16.6 16.75 0.0635 166.5 /T 2011-Nov-18 00:00 38.0 16.6 17.05 0.0715 165.7 /T 2011-Nov-19 00:00 38.2 16.6 17.32 0.0795 164.9 /T 2011-Nov-20 00:00 38.4 16.6 17.57 0.0876 164.1 /T 2011-Nov-21 00:00 38.5 16.5 17.80 0.0958 163.2 /T 2011-Nov-22 00:00 38.7 16.5 18.01 0.1039 162.3 /T - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - The table below lists right ascension, declination, apparent magnitude, solar elongation (deg) distance in lunar distances, and round-trip light travel times (RTT, in seconds) at one-hour intervals during the closest approach: Date (UT) HR:MN R.A. DEC Apparent Solar Lunar RTT magnitude Elongation Distances (s) 2011-Nov-07 00:00 226.99 -14.81 n.a. 5.3 /T 6.1 15.8 2011-Nov-07 01:00 227.16 -14.77 n.a. 5.5 /T 6.0 15.4 2011-Nov-07 02:00 227.34 -14.73 n.a. 5.6 /T 5.9 15.1 2011-Nov-07 03:00 227.52 -14.69 n.a. 5.8 /T 5.7 14.8 2011-Nov-07 04:00 227.72 -14.65 n.a. 5.9 /T 5.6 14.4 2011-Nov-07 05:00 227.92 -14.60 n.a. 6.1 /T 5.5 14.1 2011-Nov-07 06:00 228.13 -14.55 n.a. 6.3 /T 5.4 13.8 2011-Nov-07 07:00 228.36 -14.50 n.a. 6.4 /T 5.2 13.5 2011-Nov-07 08:00 228.59 -14.45 n.a. 6.6 /T 5.1 13.2 2011-Nov-07 09:00 228.84 -14.40 n.a. 6.9 /T 5.0 12.8 2011-Nov-07 10:00 229.09 -14.34 n.a. 7.1 /T 4.9 12.5 2011-Nov-07 11:00 229.37 -14.27 n.a. 7.3 /T 4.7 12.2 2011-Nov-07 12:00 229.65 -14.21 n.a. 7.6 /T 4.6 11.9 2011-Nov-07 13:00 229.95 -14.14 n.a. 7.8 /T 4.5 11.5 2011-Nov-07 14:00 230.27 -14.06 n.a. 8.1 /T 4.4 11.2 2011-Nov-07 15:00 230.61 -13.98 n.a. 8.4 /T 4.2 10.9 2011-Nov-07 16:00 230.96 -13.90 n.a. 8.7 /T 4.1 10.6 2011-Nov-07 17:00 231.35 -13.81 n.a. 9.1 /T 4.0 10.2 2011-Nov-07 18:00 231.75 -13.71 n.a. 9.4 /T 3.8 9.9 2011-Nov-07 19:00 232.18 -13.61 n.a. 9.8 /T 3.7 9.6 2011-Nov-07 20:00 232.64 -13.49 n.a. 10.3 /T 3.6 9.3 2011-Nov-07 21:00 233.14 -13.37 n.a. 10.7 /T 3.5 9.0 2011-Nov-07 22:00 233.66 -13.24 n.a. 11.2 /T 3.4 8.6 2011-Nov-07 23:00 234.23 -13.10 n.a. 11.7 /T 3.2 8.3 2011-Nov-08 00:00 234.84 -12.94 n.a. 12.3 /T 3.1 8.0 2011-Nov-08 01:00 235.51 -12.77 n.a. 13.0 /T 3.0 7.7 2011-Nov-08 02:00 236.22 -12.59 n.a. 13.6 /T 2.9 7.4 2011-Nov-08 03:00 237.00 -12.38 n.a. 14.4 /T 2.8 7.1 2011-Nov-08 04:00 237.85 -12.16 n.a. 15.2 /T 2.6 6.8 2011-Nov-08 05:00 238.78 -11.91 n.a. 16.1 /T 2.5 6.4 2011-Nov-08 06:00 239.80 -11.63 n.a. 17.1 /T 2.4 6.1 2011-Nov-08 07:00 240.93 -11.31 n.a. 18.2 /T 2.3 5.8 2011-Nov-08 08:00 242.18 -10.96 n.a. 19.5 /T 2.2 5.5 2011-Nov-08 09:00 243.57 -10.56 n.a. 20.9 /T 2.1 5.2 2011-Nov-08 10:00 245.12 -10.11 n.a. 22.4 /T 1.9 4.9 2011-Nov-08 11:00 246.87 -9.59 n.a. 24.2 /T 1.8 4.6 2011-Nov-08 12:00 248.84 -8.98 n.a. 26.2 /T 1.7 4.4 2011-Nov-08 13:00 251.08 -8.29 n.a. 28.5 /T 1.6 4.1 2011-Nov-08 14:00 253.63 -7.47 n.a. 31.1 /T 1.5 3.8 2011-Nov-08 15:00 256.57 -6.51 n.a. 34.1 /T 1.4 3.5 2011-Nov-08 16:00 259.95 -5.38 n.a. 37.6 /T 1.3 3.3 2011-Nov-08 17:00 263.87 -4.05 n.a. 41.7 /T 1.2 3.0 2011-Nov-08 18:00 268.41 -2.47 n.a. 46.5 /T 1.1 2.8 2011-Nov-08 19:00 273.66 -0.62 n.a. 52.0 /T 1.0 2.6 2011-Nov-08 20:00 279.69 1.51 n.a. 58.4 /T 0.95 2.5 2011-Nov-08 21:00 286.53 3.90 13.12 65.6 /T 0.90 2.3 2011-Nov-08 22:00 294.13 6.47 12.55 73.5 /T 0.88 2.2 2011-Nov-08 23:00 302.30 9.08 12.07 82.0 /T 0.85 2.2 2011-Nov-09 00:00 310.76 11.55 11.70 90.6 /T 0.85 2.2 2011-Nov-09 01:00 319.15 13.73 11.42 99.1 /T 0.87 2.2 2011-Nov-09 02:00 327.15 15.51 11.24 107.0 /T 0.91 2.3 2011-Nov-09 03:00 334.50 16.86 11.14 114.1 /T 0.96 2.5 2011-Nov-09 04:00 341.06 17.84 11.10 120.4 /T 1.0 2.6 2011-Nov-09 05:00 346.81 18.51 11.10 125.9 /T 1.1 2.8 2011-Nov-09 06:00 351.80 18.95 11.13 130.6 /T 1.2 3.1 2011-Nov-09 07:00 356.12 19.22 11.18 134.6 /T 1.3 3.3 2011-Nov-09 08:00 359.84 19.37 11.24 138.1 /T 1.4 3.6 2011-Nov-09 09:00 3.06 19.44 11.32 141.1 /T 1.5 3.8 2011-Nov-09 10:00 5.85 19.46 11.40 143.7 /T 1.6 4.1 2011-Nov-09 11:00 8.29 19.44 11.48 146.0 /T 1.7 4.4 2011-Nov-09 12:00 10.43 19.39 11.56 147.9 /T 1.8 4.7 2011-Nov-09 13:00 12.32 19.33 11.64 149.7 /T 1.9 5.0 2011-Nov-09 14:00 13.99 19.26 11.73 151.2 /T 2.0 5.2 2011-Nov-09 15:00 15.48 19.18 11.81 152.6 /T 2.2 5.5 2011-Nov-09 16:00 16.82 19.10 11.89 153.8 /T 2.3 5.9 2011-Nov-09 17:00 18.02 19.02 11.97 154.9 /T 2.4 6.2 2011-Nov-09 18:00 19.11 18.94 12.04 155.9 /T 2.5 6.5 2011-Nov-09 19:00 20.10 18.87 12.12 156.8 /T 2.6 6.8 2011-Nov-09 20:00 21.00 18.79 12.19 157.6 /T 2.8 7.1 2011-Nov-09 21:00 21.82 18.72 12.26 158.4 /T 2.9 7.4 2011-Nov-09 22:00 22.58 18.65 12.33 159.1 /T 3.0 7.7 2011-Nov-09 23:00 23.28 18.59 12.40 159.7 /T 3.1 8.0 2011-Nov-10 00:00 23.92 18.52 12.47 160.2 /T 3.2 8.4 2011-Nov-10 01:00 24.52 18.46 12.53 160.7 /T 3.4 8.7 2011-Nov-10 02:00 25.07 18.40 12.60 161.2 /T 3.5 9.0 2011-Nov-10 03:00 25.58 18.34 12.66 161.7 /T 3.6 9.3 2011-Nov-10 04:00 26.06 18.29 12.72 162.1 /T 3.7 9.6 2011-Nov-10 05:00 26.51 18.24 12.78 162.5 /T 3.9 9.9 2011-Nov-10 06:00 26.93 18.19 12.83 162.8 /T 4.0 10.3 2011-Nov-10 07:00 27.33 18.14 12.89 163.2 /T 4.1 10.6 2011-Nov-10 08:00 27.70 18.10 12.95 163.5 /T 4.2 10.9 2011-Nov-10 09:00 28.05 18.05 13.00 163.8 /T 4.4 11.2 2011-Nov-10 10:00 28.38 18.01 13.05 164.1 /T 4.5 11.6 2011-Nov-10 11:00 28.70 17.97 13.10 164.3 /T 4.6 11.9 2011-Nov-10 12:00 28.99 17.94 13.15 164.6 /T 4.7 12.2 2011-Nov-10 13:00 29.27 17.90 13.20 164.8 /T 4.9 12.5 2011-Nov-10 14:00 29.54 17.87 13.25 165.0 /T 5.0 12.8 2011-Nov-10 15:00 29.79 17.83 13.30 165.2 /T 5.1 13.2 2011-Nov-10 16:00 30.03 17.80 13.35 165.4 /T 5.2 13.5 2011-Nov-10 17:00 30.26 17.77 13.39 165.6 /T 5.4 13.8 2011-Nov-10 18:00 30.48 17.74 13.44 165.8 /T 5.5 14.1 2011-Nov-10 19:00 30.69 17.71 13.48 165.9 /T 5.6 14.5 2011-Nov-10 20:00 30.89 17.68 13.52 166.1 /T 5.8 14.8 2011-Nov-10 21:00 31.08 17.66 13.57 166.2 /T 5.9 15.1 2011-Nov-10 22:00 31.27 17.63 13.61 166.3 /T 6.0 15.4 2011-Nov-10 23:00 31.44 17.61 13.65 166.5 /T 6.1 15.8 2011-Nov-11 00:00 31.61 17.58 13.69 166.6 /T 6.3 16.1 The Moon will be in a waxing gibbous phase and will be up the entire time during Nov. 8/9 that YU55 is visible after dark.


Setups



Plan for the fourth track:

5 CW runs, correct Doppler is necessary.   
-chirping at 40 MHz, PRP at 20 us (sampling with both 40 MHz and 80 MHz) + 8 Hz offset


CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           none                          
Bandwidth:                4000 Hz 
Sampling interval:        2500 x 0.1 usec
VME FFT for PSD files:    32768 for 0.12-Hz resolution 

-------------------------------------------------------------------------
1-usec single sample
baud              1 usec
code              255
ncoh              12
bandwidth         327  Hz
FFT               128
dfreq             2.6  Hz
TXoff            +50 Hz  (echo in bin 64+16 =80)
-------------------------------------------------------------------------------


_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n) 
   These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
   Currently configured for 5-sec records.
_______________________________________________________________________
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
_______________________________________________________________________
 
JX1XS110  11.000 1650    1397.0      715.8  11.2      2   358     5.6
JX1XS070   7.000 1050     889.0     1124.9  17.6      3   375     5.9
                                                      
JX1XS020   2.000  300     254.0     3937.0  61.5     12   328     5.1
                                                      4   984    15.4 

JX1XS010   1.000  150     127.0     7874.0 123.0     41   192     3.0 
                                                      8   984    15.4 

JX1XS005   0.500   75      63.5    15748.0 246.1    123   128     2.0 
                                                     15  1050    16.4 

JX1XS002   0.250   37.5    31.75   31496.1 492.1    492    64     1.0
                                                     30  1050    16.4 
 
JX1XS001   0.125   18.75   15.875  62992.1 984.3   1970    32     0.5 
                                                     60  1050    16.4 
____________________________________________________________________


Instructions

NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/2005YU55/raw/

2005 YU55 POINTING:

  OSOD and predicts are on aardvark:

Predicts for Nov 10th track have been established in this sub-directory. 

  /export/data3/osod/ops/2005yu55

   PRDX.OUT.14v-13-13.s86
   PUNCH.OUT.14v-13-13.s86
   EPH.OUT.s86

 Please note: Doppler at the uplink

POINTING  
                                                          TX Offsets    
Date (UTC)   DOY  hhmmss    RA        Dec         Macro   LHA     Dec    RTT    OSOD
2011 11 10   314  040000    26.3672   18.27390      A                    9.6
2011 11 10   314  050000    26.7645   18.23230      A    -1.10   -0.10   9.9    s86
2011 11 10   314  060000    27.1322   18.18860      A                   10.2 

2011 11 10   314  060000    27.1322   18.18860      B                   10.2
2011 11 10   314  070000    27.4763   18.14290      B                   10.5
2011 11 10   314  080000    27.8020   18.09560      B    -1.00   -0.20  10.8    s86
2011 11 10   314  090000    28.1140   18.04700      B                   11.2
2011 11 10   314  100000    28.4159   17.99780      B                   11.5

Transmit offsets are given in millidegrees.  


PRDX.OUT.14v-13-13.s86 TRANSMITTER: STATION #14, RECEIVER: STATION #13 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2011 NOV 10 04:00 9.5705632640 -747936.197 325.8114 18.2746 26.367 55.329 2011 NOV 10 04:10 9.6230166018 -748866.029 328.2497 18.2678 26.436 57.178 2011 NOV 10 04:20 9.6755356848 -749812.260 330.6890 18.2610 26.503 58.991 2011 NOV 10 04:30 9.7281216206 -750773.661 333.1293 18.2541 26.570 60.762 2011 NOV 10 04:40 9.7807754257 -751748.963 335.5704 18.2471 26.636 62.482 2011 NOV 10 04:50 9.8334980313 -752736.863 338.0124 18.2401 26.700 64.139 2011 NOV 10 05:00 9.8862902723 -753736.019 340.4553 18.2330 26.764 65.719 2011 NOV 10 05:10 9.9391528881 -754745.057 342.8990 18.2259 26.828 67.206 2011 NOV 10 05:20 9.9920865251 -755762.576 345.3435 18.2187 26.890 68.578 2011 NOV 10 05:30 10.0450917275 -756787.146 347.7887 18.2114 26.952 69.813 2011 NOV 10 05:40 10.0981689361 -757817.314 350.2347 18.2041 27.012 70.882 2011 NOV 10 05:50 10.1513184932 -758851.607 352.6814 18.1968 27.073 71.755 2011 NOV 10 06:00 10.2045406367 -759888.534 355.1288 18.1893 27.132 72.403 2011 NOV 10 06:10 10.2578354960 -760926.589 357.5768 18.1818 27.191 72.800 2011 NOV 10 06:20 10.3112030996 -761964.253 0.0255 18.1743 27.249 72.927 2011 NOV 10 06:30 10.3646433655 -763000.002 2.4747 18.1667 27.307 72.779 2011 NOV 10 06:40 10.4181561043 -764032.303 4.9246 18.1591 27.364 72.362 2011 NOV 10 06:50 10.4717410234 -765059.624 7.3750 18.1514 27.420 71.694 2011 NOV 10 07:00 10.5253977187 -766080.431 9.8259 18.1436 27.476 70.802 2011 NOV 10 07:10 10.5791256800 -767093.195 12.2773 18.1358 27.531 69.716 2011 NOV 10 07:20 10.6329242917 -768096.396 14.7292 18.1280 27.586 68.464 2011 NOV 10 07:30 10.6867928277 -769088.520 17.1816 18.1201 27.641 67.075 2011 NOV 10 07:40 10.7407304618 -770068.071 19.6344 18.1121 27.695 65.572 2011 NOV 10 07:50 10.7947362582 -771033.564 22.0877 18.1042 27.748 63.975 2011 NOV 10 08:00 10.8488091830 -771983.539 24.5413 18.0962 27.802 62.301 2011 NOV 10 08:10 10.9029480966 -772916.554 26.9953 18.0881 27.854 60.564 2011 NOV 10 08:20 10.9571517621 -773831.193 29.4497 18.0801 27.907 58.775 2011 NOV 10 08:30 11.0114188144 -774726.069 31.9044 18.0720 27.959 56.942 2011 NOV 10 08:40 11.0657479005 -775599.825 34.3595 18.0638 28.011 55.074 2011 NOV 10 08:50 11.1201374152 -776451.137 36.8148 18.0557 28.062 53.176 2011 NOV 10 09:00 11.1745857661 -777278.718 39.2705 18.0475 28.114 51.254 2011 NOV 10 09:10 11.2290912457 -778081.320 41.7264 18.0394 28.164 49.311 2011 NOV 10 09:20 11.2836520626 -778857.734 44.1826 18.0312 28.215 47.351 2011 NOV 10 09:30 11.3382663389 -779606.796 46.6390 18.0230 28.266 45.378 2011 NOV 10 09:40 11.3929321199 -780327.390 49.0956 18.0148 28.316 43.394 2011 NOV 10 09:50 11.4476473710 -781018.445 51.5525 18.0065 28.366 41.401 2011 NOV 10 10:00 11.5024099860 -781678.940 54.0096 17.9983 28.416 39.401 2011 NOV 10 10:10 11.5572177907 -782307.910 56.4669 17.9901 28.465 37.397 2011 NOV 10 10:20 11.6120685419 -782904.441 58.9243 17.9819 28.514 35.388 2011 NOV 10 10:30 11.6669599357 -783467.676 61.3820 17.9738 28.564 33.378 2011 NOV 10 10:40 11.7218896133 -783996.815 63.8398 17.9656 28.613 31.366 2011 NOV 10 10:50 11.7768551545 -784491.119 66.2977 17.9575 28.662 29.355 2011 NOV 10 11:00 11.8318540981 -784949.908 68.7558 17.9493 28.710 27.346

2005YU55 GOLDSTONE MASTERLOG

2005 YU55 Goldstone Masterlog = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = 2005 YU55 ARECIBO MASTERLOG: 2011 Observations ============================================== Proposal R2629 Last update: 2011 Dec 12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 08 Bistatic with Green Bank (Michael Busch at GBT) Observations conducted by Patrick Taylor and Mike Nolan <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS CW no hop 5000 78 +150 152746- 192746- Bistatic with GBT 0.1 usec 65535 152.6 78 +0.5 171541- 211541- Bistatic with GBT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 10 (UTC) Bistatic with Green Bank (Michael Busch at GBT) Observations conducted by Patrick Taylor and Mike Nolan <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS CW no hop 5000 86 +150 212922- 012922- Bistatic with GBT 0.1 usec 65535 152.6 86 +0.5 220359- 020359- Bistatic with GBT CW no hop 5000 86 +150 230025- 030025- Bistatic with GBT 0.1 usec 65535 152.6 86 +0.5 231400- 031400- Bistatic with GBT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 11 (UTC) Monostatic and bistatic with GBT and VLBA (Michael Busch at GBT) Observations conducted by Patrick Taylor and Mike Nolan <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS CW no hop 5000 86 +150 223959- 023959- Bistatic with GBT CW no hop 5000 86 +150 6 225515-225836 025515-025836 Monostatic CW no hop 5000 86 0 230730- 030730- Bistatic with VLBA 1.0 usec 32767 30.5 86 +2 9 233302-233905 033302-033905 Monostatic 0.1 usec 65535 152.6 86 +5 21 234540-235945 034540-035945 Monostatic - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 12 (UTC) Bistatic with GBT and VLBA Observations conducted by Patrick Taylor and Mike Nolan <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS 0.1 usec 65535 152.6 86 +0.5 000400- 040400- Bistatic with GBT CW no hop 5000 86 +150 1 221430-221449 021430-021449 Monostatic Cw no hop 5000 86 +150 222708- 022708- Bistatic with GBT 0.1 usec 65535 152.6 86 +0.5 223330- 023330- Bistatic with GBT CW no hop 5000 86 0 230010- 030010- Bistatic with VLBA 0.1 usec 65535 152.6 86 +0.5 234730- 034730- Bistatic with GBT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 13 (UTC) Monostatic and bistatic with VLBA Observations conducted by Patrick Taylor and Mike Nolan <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS CW no hop 5000 86 +150 5 222922-223415 022922-023415 Monostatic 0.05 usec 65535 305.2 86 +2 20 223559-225718 023559-025718 Monostatic CW no hop 5000 86 0 225859- 025859- Bistatic with VLBA 0.05 usec 65535 305.2 86 +2 58 234108-004537 034108-044537 Monostatic - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 14 (UTC) Monostatic observations Observations conducted by Patrick Taylor and Mike Nolan <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS CW no hop 5000 86 +150 6 220103-221206 020103-021206 Monostatic 0.05 usec 65535 305.2 86 +2 60 221953-234636 021953-034636 Monostatic - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2011 Nov 19 (UTC) Monostatic Observations Observations conducted by Patrick Taylor, Mike Nolan, and Lance Benner <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend Setup Code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS CW no hop 5000 96 +150 3 222350-223022 022350-023022 0.1 usec 65535 152.6 96 +5 27 225521-002659 025521-042659 There were a couple of short gaps in imaging due to transmitter trips. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov California Institute of Technology | Plan: To live long and prosper Pasadena, CA 91109-8099 http://echo.jpl.nasa.gov/asteroids/2005YU55/2005YU55_planning.html

Asteroid Radar Astronomy
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