(277475) 2005 WK4 Goldstone Radar Observations Planning


Goldstone Radar Images of 2005 WK4: Aug. 10


Images from August 10 obtained at a resolution of 7.5 m x 0.5 Hz.
At the time of the observations, the asteroid's distance was 0.022 AU (8.6 lunar distances)
and moving away from Earth.


Goldstone Radar Images of 2005 WK4: Aug. 9


Images from August 9 obtained at a resolution of 3.75 m x 0.5 Hz.
At the time of the observations, the asteroid's distance was 0.021 AU (8.2 lunar distances).
Range increases down and Doppler frequency increases to the right, so rotation
is counterclockwise.  


Goldstone Radar Images of 2005 WK4: Aug. 8


Sums of 10 consecutive runs from August 8.  Resolution =3.75 m x 0.5 Hz.
JPL/Horizons solution 72.  Distance = 0.022 AU (8.6 lunar distances).
Range increases down and Doppler frequency increases to the right, so rotation
is counterclockwise.  This sequence covers 6.5 hours, which corresponds to
about 2.4 rotations by the asteroid.


Goldstone Radar Images of 2005 WK4: Aug. 7


Sums of 10 consecutive runs from August 7.  Resolution = 7.5 m x 0.5 Hz.
JPL/Horizons solution 72.  Distance = 0.022 AU (8.6 lunar distances).
Range increases down and Doppler frequency increases to the right, so rotation
is counterclockwise.  2005 WK4 has a rotation period of 2.7 hours, so this 
sequence spans about one rotation.  Each image covers about 15
degrees of rotation.


Goldstone Radar Images of 2005 WK4: Aug. 6


Sums of 8 consecutive runs from August 6.  Resolution = 18.75 m x 0.5 Hz.
JPL/Horizons solution 66.  Distance = 0.024 AU (9.3 lunar distances).


Goldstone Radar Images of 2005 WK4: Aug. 5


Top: Sums of 10 consecutive transmit-receive cycles from Aug. 5.  Resolution = 18.75 m x 0.5 Hz.
Distance increases up and Doppler frequency increases to the right, so rotation is clockwise.
The first image is shown at the top left and the last appears at the bottom right.
Distance = 0.027 AU (10.5 lunar distances).  The images establish that 2005 WK4 is a rounded object and
suggest that it's close to 300 m in diameter.  JPL/Horizons solution 64.

Bottom: Echo power spectrum obtained from a sum of 10 CW runs on August 5.  Resolution = 0.2 Hz.
JPL/Horizons solution 62.


Goldstone Radar Images of 2005 WK4: Aug. 3


Top: Sums of 10 consecutive transmit-receive cycles from Aug. 3.  Resolution = 37.5 m x 0.25 Hz.
The orientation of the images is the same as on August 5 (above).
Distance = 0.034 AU (13.2 lunar distances).  JPL/Horizons solution 60.

Bottom: Sum of 10 CW runs obtained with solution 58.  OC echo power is shown in red and SC echo
power is shown in green.  The bandwidth is about 10 Hz, which is consistent with results obtained 
at Arecibo in 2012.


Background


2005 WK4 was discovered on November 27, 2005 by the Siding Spring Survey.  
Its absolute magnitude of 20.1 suggests a diameter within a factor of two of 0.3 km.
Weak CW echoes were detected by radar at Arecibo in July of 2012.  If we assume
that the diameter is 0.3 km, then the ~3 Hz bandwidth of the Arecibo echo suggests
that this object is a relatively rapid rotator with a period of roughly 2-3 hours.
Otherwise its physical properties are unknown.

2005 WK4 will approach within 0.021 AU (8 lunar distances) on August 9, 2013, when it will be
a very strong radar target at both Goldstone and Arecibo.  We are planning radar observations
over about a week at Goldstone and on four days at Arecibo at resolutions of 3.75 m at Goldstone
and 7.5 m at Arecibo.

Observations are scheduled between Aug. 3-12 at Goldstone.
Observations at Arecibo are scheduled on August 7 - 10.

2005 WK4 will be too close to the Sun for optical observations until early August, so we don't 
expect any new information on its physical properties to become available until right about
the time that the radar observations start.

2005 WK4 has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center,
although there's no danger over the entire interval that the orbit can be computed.
Orbital and Physical Characteristics  
 orbit type               Apollo
 semimajor axis           1.012 AU     
 eccentricity             0.237
 inclination              9.8 deg       
 perihelion distance      0.772 AU     
 aphelion distance        1.252 AU
 Tisserand parameter      5.985     Not cometary
 absolute magnitude (H)   20.1
 diameter                 0.3 km +- a factor of two
 optical albedo           unknown
 rotation period          2.59 h   Bob Stephens, pers. comm.
 pole direction           unknown
 lightcurve amplitude     0.3 mag
 spectral class           unknown

Last update: 2013 August 27

Close approaches: NOTE: pre-epoch CA list was truncated due to Earth TCA3Sg exceeding the set limit. Date (CT) Body CA Dist MinDist MaxDist Vrel TCA3Sg Nsigs P_i/p ---------------------- ----- ------- ------- ------- ------ ------ ------ ------- A.D. 1817 Jan 28.44878 Earth .095024 .064678 1.439585 7.362 3.00E5 8.69E5 .000000 A.D. 1826 Aug 07.51662 Earth .080042 .008570 .257324 7.039 294.05 1.13E5 .000000 A.D. 1827 Aug 08.98814 Earth .007757 .007398 .037507 8.931 1427.2 81962. .000000 A.D. 1851 Sep 28.10597 Venus .094795 .083947 .113287 7.504 270.40 9.43E5 .000000 A.D. 1875 Feb 12.77305 Venus .097255 .091042 .104520 7.615 95.48 9.34E5 .000000 A.D. 1879 Jan 17.10051 Earth .094397 .088612 .100339 10.888 563.72 6.16E5 .000000 A.D. 1880 Jan 24.12776 Earth .060056 .058194 .062568 8.461 727.49 6.97E5 .000000 A.D. 1889 Aug 07.89018 Earth .028746 .027282 .030223 8.177 50.59 69273. .000000 A.D. 1890 Aug 10.59358 Earth .054871 .053145 .056591 10.206 85.66 62253. .000000 A.D. 1895 Jun 02.30888 Venus .086244 .085780 .086748 5.899 71.03 1.18E6 .000000 A.D. 1945 Jan 18.22444 Earth .086247 .085770 .086726 10.609 50.18 6.08E5 .000000 A.D. 1946 Jan 24.90152 Earth .061183 .060962 .061410 8.393 65.36 6.91E5 .000000 A.D. 1955 Aug 08.78020 Earth .067869 .067869 .067869 7.282 0.43 1.66E6 .000000 A.D. 1956 Aug 09.97843 Earth .018650 .018591 .018708 9.314 2.66 52080. .000000 A.D. 1959 May 27.74514 Venus .091517 .091496 .091539 7.094 0.64 1.06E6 .000000 A.D. 1985 Nov 08.33074 Venus .088686 .088679 .088693 5.858 0.75 1.27E6 .000000 A.D. 2004 Jan 18.97664 Earth .094520 .094518 .094522 10.956 0.31 2.43E5 .000000 A.D. 2005 Jan 25.59499 Earth .060235 .060234 .060235 8.310 0.29 2.83E5 .000000 A.D. 2013 Aug 09.20998 Earth .020713 .020712 .020714 8.380 0.15 76714. .000000 * A.D. 2014 Aug 12.47736 Earth .072041 .072039 .072042 10.674 0.19 1.92E5 .000000 A.D. 2035 Sep 08.00984 Venus .084568 .084567 .084568 6.298 0.94 6.71E5 .000000 A.D. 2068 Jan 23.44895 Earth .054036 .054031 .054041 9.099 5.72 2.74E5 .000000 A.D. 2077 Aug 08.19399 Earth .077810 .077743 .077878 7.085 0.74 34202. .000000 A.D. 2078 Aug 10.58162 Earth .012803 .012741 .012865 9.188 2.94 22276. .000000 A.D. 2079 May 14.25717 Venus .088956 .088943 .088969 6.594 5.52 1.81E5 .000000 A.D. 2115 Jan 18.63382 Venus .089005 .088629 .089632 6.038 208.94 5.62E5 .000000 A.D. 2122 Jan 22.25726 Earth .067914 .064051 .072013 10.116 516.81 2.40E5 .000000 A.D. 2123 Jan 31.92536 Earth .085694 .081195 .090510 7.439 936.80 2.26E5 .000000 A.D. 2130 Aug 10.71560 Earth .021630 .017072 .026271 8.350 212.35 6320.1 .000000 A.D. 2131 Aug 14.37010 Earth .076285 .075514 .077055 10.777 41.63 30124. .000000 A.D. 2144 Jul 29.38346 Venus .092487 .089034 .131359 5.747 3495.9 5.38E5 .000000 A.D. 2171 Jan 12.20726 Venus .087493 .084336 .174708 6.346 4577.3 6.16E5 .000000 A.D. 2180 Jan 21.86097 Earth .075675 .052153 .279330 10.398 21019. 2.65E5 .000000 NOTE: post-epoch CA list was truncated due to Earth TCA3Sg exceeding the set limit. The 2013 encounter is the closest since 1956 and until 2078.

Discovery MPEC

M.P.E.C. 2005-W79                                Issued 2005 Nov. 28, 12:12 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 WK4

Observations:
     K05W04K* C2005 11 27.63813 05 53 07.29 -21 11 17.2          18.9 V EW079E12
     K05W04K  C2005 11 27.64699 05 53 06.14 -21 11 30.8          18.9 V EW079E12
     K05W04K  C2005 11 27.65573 05 53 05.10 -21 11 44.4          18.9 V EW079E12
     K05W04K  C2005 11 27.66434 05 53 04.12 -21 11 58.2          19.5 V EW079E12
     K05W04K  C2005 11 27.70034 05 52 59.70 -21 12 52.2          19.3 V EW079E12
     K05W04K  C2005 11 27.70852 05 52 58.72 -21 13 04.1          19.1 V EW079E12
     K05W04K  C2005 11 27.71679 05 52 57.72 -21 13 17.4          19.0 V EW079E12
     K05W04K  C2005 11 27.72499 05 52 56.71 -21 13 29.7          19.2 V EW079E12
     K05W04K  C2005 11 27.73519 05 52 55.50 -21 13 46.1          19.1 V EW079E12
     K05W04K  C2005 11 27.73847 05 52 54.97 -21 13 49.1          19.3 V EW079E12
     K05W04K  C2005 11 27.74175 05 52 54.68 -21 13 54.8                 EW079E12
     K05W04K  C2005 11 28.45799 05 51 37.75 -21 32 03.4          18.8 V EW079E12
     K05W04K  C2005 11 28.45887 05 51 37.72 -21 32 04.7          19.2 V EW079E12
     K05W04K  C2005 11 28.45975 05 51 37.64 -21 32 05.7          19.4 V EW079E12
     K05W04K  C2005 11 28.46061 05 51 37.55 -21 32 07.5          19.0 V EW079E12
     K05W04K  C2005 11 28.46149 05 51 37.45 -21 32 08.0          19.1 V EW079E12

Observer details:
E12 Siding Spring Survey.  Observer R. H. McNaught.  Measurers E. C. Beshore,
    E. J. Christensen, G. J. Garradd, A. D. Grauer, R. E. Hill, R. A. Kowalski,
    S. M. Larson, R. H. McNaught.  0.5-m Uppsala Schmidt + CCD.

Orbital elements:
2005 WK4                                                             PHA 0.048
Epoch 2005 Nov. 26.0 TT = JDT 2453700.5                 MPC
M 220.00362              (2000.0)            P               Q
n   0.95854562     Peri.   66.96183     -0.76866977     +0.63548370
a   1.0187341      Node   152.32728     -0.62914419     -0.73057714
e   0.1878267      Incl.    9.02491     -0.11543121     -0.24983497
P   1.03           H   20.1           G   0.15
From 16 observations 2005 Nov. 27-28.

Ephemeris:
2005 WK4                 a,e,i = 1.02, 0.19, 9                   q = 0.8274
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2005 11 26    05 55.97   -20 28.5    0.265    1.177   130.8    39.4    19.1
2005 12 06    05 34.74   -24 19.8    0.241    1.160   132.0    39.2    18.9
2005 12 16    05 05.90   -26 26.5    0.223    1.140   129.8    41.6    18.7
2005 12 26    04 33.84   -26 12.6    0.211    1.116   124.3    46.7    18.7
2006 01 05    04 04.13   -23 32.9    0.203    1.089   116.6    53.8    18.8
2006 01 15    03 40.54   -18 57.7    0.197    1.060   107.7    62.1    18.9
2006 01 25    03 23.08   -13 04.4    0.192    1.030    98.2    71.2    19.1
2006 02 04    03 09.70   -06 15.9    0.185    0.997    88.3    81.1    19.3
2006 02 14    02 56.81   +01 16.4    0.176    0.965    77.5    92.3    19.5
2006 02 24    02 39.28   +09 29.7    0.166    0.933    65.4   105.3    19.9

Timothy B. Spahr             (C) Copyright 2005 MPC           M.P.E.C. 2005-W79

SNR Calculation

Target Name:   2005 WK4

D      = 0.3 km  A guess obtained by assuming pv = 0.18 and using H = 20.1 to compute D
Period = 2.2 h   A lower bound based on observations of other NEAs 
OC albedo = 0.1  A standard guess; generally conservative (most NEAs are more reflective)

                                                                SNR/       SNR/
w  DOY  start date    window       RA, dec   dist     runs      date       run
31 212 2013 Jul 31  10:35-00:47    98, +57  0.046     546        120         5
31 213 2013 Aug 01  10:13-00:18    93, +56  0.042     594        170         8
31 214 2013 Aug 02  09:50-23:43    87, +55  0.038     647        250        11
31 215 2013 Aug 03  09:26-23:01    79, +53  0.034     704        380        16 *
31 216 2013 Aug 04  09:01-22:14    72, +51  0.030     762        580        23

32 217 2013 Aug 05  08:37-21:20    63, +47  0.027     816        880        34 *
32 218 2013 Aug 06  08:14-20:21    54, +41  0.024     859       1300        48 *
32 219 2013 Aug 07  07:55-19:20    45, +33  0.022     877       1800        65 *   Overlaps Arecibo
32 220 2013 Aug 08  07:41-18:17    37, +24  0.021     857       2100        79 *   Overlaps Arecibo
32 221 2013 Aug 09  07:33-17:16    29, +13  0.021     790       2100        82 *   Overlaps Arecibo
32 222 2013 Aug 10  07:30-16:16    22,  +3  0.022     685       1700        71 *   Overlaps Arecibo
32 223 2013 Aug 11  07:32-15:18    16,  -7  0.023     563       1100        53

33 224 2013 Aug 12  07:37-14:24    10, -15  0.026     445        680        35 *
33 225 2013 Aug 13  07:46-13:33     6, -21  0.029     340        380        22
33 226 2013 Aug 14  07:57-12:44     2, -26  0.033     251        210        14
33 227 2013 Aug 15  08:12-11:55   359, -29  0.037     176        110         9

Goldstone SNRs assume Ptx = 450 kW 


Arecibo SNRs:
                                                    #    SNR/    SNR/
w  DOY start date    window       RA, dec   dist   runs  Date    run
32 219 2013 Aug 07  09:42-11:18   46,  35  0.022     95  12000   1400    Overlaps Goldstone
32 220 2013 Aug 08  08:33-11:08   38,  25  0.021    159  23000   1900    Overlaps Goldstone
32 221 2013 Aug 09  07:55-10:32   30,  15  0.021    163  24000   2000    Overlaps Goldstone  CANCELLED DUE TO RECEIVER PROBLEMS
32 222 2013 Aug 10  07:46-09:34   23,   4  0.021    109  17000   1800    Overlaps Goldstone  CANCELLED DUE TO RECEIVER PROBLEMS

Arecibo SNRs assume Ptx = 900 kW

Track Assignments


Goldstone tracks:
 DOY BOA  BOT  EOT  EOA
 215 0915 1045 1320 1350  DSS-14  GSSR   AST 2005 WK4 
 217 0945 1115 1510 1540  DSS-14  GSSR   AST 2005 WK4       
 218 0645 0815 1110 1140  DSS-14  GSSR   AST 2005 WK4        
 219 0705 0835 1135 1205  DSS-14  GSSR   AST 2005 WK4      
 220 0620 0750 1410 1440  DSS-14  GSSR   AST 2005 WK4      
 221 0910 1040 1330 1400  DSS-14  GSSR   AST 2005 WK4      
 222 0715 0845 1330 1400  DSS-14  GSSR   AST 2005 WK4      
 224 1035 1205 1420 1450  DSS-14  GSSR   AST 2005 WK4     

       UT       UT          PDT          AST          Duration Round-trip     
 DOY   Date     TX Window   TX Window    TX Window    hh:mm    time (sec)  SNR/Run Rotations
 ---   ----     ---------   ---------    ---------    -------- ----------  ------- ---------
 215   Aug 03   0945 1320   0245-0620    0545-0920     3:35     34          16      1.3      Too far north for Arecibo
 217   Aug 05   1015 1510   0315-0810    0615-1110     4:55     27          34      1.8      Too far north for Arecibo
 218   Aug 06   0810 1110   0110-0410    0410-0710     3:00     24          48      1.1      Too far north for Arecibo
 219   Aug 07   0755 1135   0055-0435    0355-0735     3:40     22          65      1.4      Overlaps Arecibo from 0942-1118
 220   Aug 08   0745 1410   0045-0710    0345-1010     6:25     21          79      2.4      Overlaps Arecibo from 0833-1108 
 221   Aug 09   0940 1330   0240-0630    0540-0930     3:50     21          82      1.4      Overlaps Arecibo from 0940-1032
 222   Aug 10   0745 1330   0045-0630    0345-0930     5:45     22          71      2.1      Overlaps Arecibo from 0746-0934
 224   Aug 12   1105 1420   0405-0720    0805-1020     3:15     26          35      1.2      Too far south for Arecibo

Colleagues at Arecibo will try to receive Goldstone X-band transmissions during the track on Aug. 9.

We estimate that bistatic Goldstone -> Arecibo SNRs will be roughly 5x stronger than monostatic Goldstone SNRs.

NOTE: TXON is shown when transmit authorization starts, which in some cases is only 30 minutes into precal. 


Arecibo tracks:
         UT      UT          PDT         AST         Duration   Round-trip     
DOY     Date     TX Window   TX Window   TX Window   hh:mm      time (sec)   SNR/Run  Rotations
---     ----     ---------   ---------   ---------   --------   ---------    -------  ---------
219     Aug 07   0942-1118   0242-0418   0542-0718    1:36        22         1400      0.59
220     Aug 08   0833-1108   0133-0408   0433-0708    2:35        21         1900      0.95
221     Aug 09   0755-1032   0055-0332   0355-0632    2:37        21         2000      0.97
222     Aug 10   0746-0934   0046-0234   0346-0534    1:48        21         1800      0.66

We also requested radar speckle tracking time at Arecibo and the VLBA (Michael Busch, PI): 
twenty minutes during two of the Arecibo tracks with a preference for August 7 and 10.
Radar speckle observations will use Arecibo to transmit and the VLBA stations at Pie Town, Los Alamos, 
Kitt Peak, and Fort Davis to receive.


Uncertainties

Orbit solution s77 has been synchronized at both sites with new delay 
measurements from both sites included together. 189 optical 
measurements (2005-Nov-27 to 2013-Aug-5) and 8 delays, 3 Dopplers.

Formal 3-sigma S/X-band uncertainties for s77:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2013-Aug-08 00:00       0.833        0.03        0.12       0.000001
 2013-Aug-09 00:00       0.882        0.05        0.19       0.000002
 2013-Aug-10 00:00       0.887        0.06        0.24       0.000004
 2013-Aug-11 00:00       0.852        0.07        0.25       0.000006
 2013-Aug-12 00:00       0.793        0.07        0.25       0.000009
 2013-Aug-13 00:00       0.727        0.07        0.24       0.000011

New predict files have been generated at Arecibo. As Lance previewed,
they model DSS-14 transmitting Doppler uplink to itself (fixed 8560 MHz
receive frequency at DSS-14).

The Arecibo receive predicts now contain differential delay/Doppler
predicts to listen in on that X-band signal designed for DSS-14.

Other than being s77, the Goldstone configuration and files are unchanged.

- - - - - - - - - - - - - - - - - - - - 

From Jon Giorgini, 2013 Aug. 6:

Folding in some new optical astrometry (2005-Nov-27 to 2013-Aug-5) with 
the prior AO (1 Doppler, 2012-Jul-23) and new DSS-14 radar astrometry 
(5-delay, 2 Doppler Aug 3-5), orbit solution #70 was estimated.

Formal 3-sigma S/X-band uncertainties:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2013-Aug-03 00:00       0.505        0.08        0.30       0.000004
 2013-Aug-04 00:00       0.570        0.06        0.22       0.000002
 2013-Aug-05 00:00       0.650        0.04        0.13       0.000001
 2013-Aug-06 00:00       0.745        0.05        0.19       0.000001
 2013-Aug-07 00:00       0.849        0.12        0.43       0.000004
 2013-Aug-08 00:00       0.946        0.20        0.72       0.000009
 2013-Aug-09 00:00       1.006        0.26        0.96       0.000018
 2013-Aug-10 00:00       1.007        0.29        1.07       0.000029
 2013-Aug-11 00:00       0.956        0.28        1.03       0.000039
 2013-Aug-12 00:00       0.877        0.26        0.94       0.000049
 2013-Aug-13 00:00       0.793        0.23        0.84       0.000058

OSOD has been updated on aardvark and reserv. 

- - - - - - - - - - - - - - - - - - - - 

From Jon Giorgini, 2013 July 29:

Based on 174 optical measurements (2005-Nov-27 to 2012-Oct-14) and
1 Doppler from Arecibo in July 2012, 277475 (2005 WK4), orbit solution #58
was estimated. OSOD with nominal predicts has been established on
both aardvark and rserv in the /a277475 sub-directory.

Formal 3-sigma S/X-band uncertainty:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2013-Aug-03 00:00       6.227        2.90       10.52       0.000415
 2013-Aug-04 00:00       6.797        3.28       11.93       0.000402
 2013-Aug-05 00:00       7.347        3.73       13.55       0.000426
 2013-Aug-06 00:00       7.756        4.16       15.12       0.000494
 2013-Aug-07 00:00       7.804        4.39       15.94       0.000597
 2013-Aug-08 00:00       7.232        4.10       14.92       0.000715
 2013-Aug-09 00:00       5.997        3.15       11.45       0.000818
 2013-Aug-10 00:00       4.589        1.94        7.05       0.000878
 2013-Aug-11 00:00       3.770        1.45        5.25       0.000885
 2013-Aug-12 00:00       3.646        1.71        6.20       0.000852
 2013-Aug-13 00:00       3.728        1.93        7.00       0.000797

**********************************************************************************************

Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination:

 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC.            delta  APmag    S-O-T /r  T-O-M/Illu%
 2013-Jul-25 00:00     118.74715  56.28354 0.07661233515108   n.a.  36.8147 /L  122.7/ 92.7
 2013-Jul-26 00:00     116.77059  56.52687 0.07186933865747   n.a.  37.5817 /L  111.7/ 85.6
 2013-Jul-27 00:00     114.50266  56.73814 0.06717592340493   n.a.  38.4865 /L  100.2/ 77.1
 2013-Jul-28 00:00     111.88814  56.90292 0.06253579621536   n.a.  39.5560 /L   88.5/ 67.5
 2013-Jul-29 00:00     108.85902  56.99966 0.05795451666507   n.a.  40.8246 /L   76.9/ 57.5
 2013-Jul-30 00:00     105.33267  56.99580 0.05344025335281   n.a.  42.3381 /L   65.5/ 47.5
 2013-Jul-31 00:00     101.21121  56.84190 0.04900488949955   n.a.  44.1579 /L   54.8/ 37.9
 2013-Aug-01 00:00      96.38427  56.46245 0.04466568093309   n.a.  46.3668 /L   45.1/ 28.8
 2013-Aug-02 00:00      90.73889  55.74252 0.04044778762777   n.a.  49.0785 /L   37.7/ 20.7
 2013-Aug-03 00:00      84.18180  54.50909 0.03638817118265   n.a.  52.4482 /L   34.7/ 13.6
 2013-Aug-04 00:00      76.67885  52.50919 0.03254154579872   n.a.  56.6865 /L   38.2/  7.8
 2013-Aug-05 00:00      68.30820  49.39347 0.02898908697678  16.97  62.0681 /L   47.8/  3.6
 2013-Aug-06 00:00      59.30420  44.73079 0.02584967906297  16.30  68.9166 /L   62.2/  1.0
 2013-Aug-07 00:00      50.05076  38.10465 0.02328958042600  15.61  77.5204 /L   80.2/  0.2
 2013-Aug-08 00:00      40.99914  29.35317 0.02151670590872  14.98  87.9171 /L  101.0/  1.3
 2013-Aug-09 00:00      32.54475  18.90575 0.02073565616770  14.46  99.5822 /L  123.7/  4.4
 2013-Aug-10 00:00      24.93830   7.87751 0.02106010104806  14.11 111.3487 /L  146.3/  9.4
 2013-Aug-11 00:00      18.27214  -2.42222 0.02244612639524  13.94 121.9005 /L  164.0/ 16.2
 2013-Aug-12 00:00      12.52111 -11.16302 0.02472034733490  13.92 130.4385 /L  159.4/ 24.6
 2013-Aug-13 00:00       7.59599 -18.16218 0.02766944960429  13.99 136.8411 /L  142.2/ 34.4
 2013-Aug-14 00:00       3.38452 -23.62255 0.03110703137167  14.13 141.3922 /L  124.5/ 45.1
 2013-Aug-15 00:00     359.77521 -27.85891 0.03489398591380  14.30 144.4953 /L  107.6/ 56.2
 2013-Aug-16 00:00     356.66818 -31.16329 0.03893340458305  14.48 146.5268 /L   91.5/ 67.3
 2013-Aug-17 00:00     353.97845 -33.76715 0.04315928182822  14.68 147.7886 /L   76.3/ 77.7
 2013-Aug-18 00:00     351.63564 -35.84314 0.04752665257389  14.87 148.5063 /L   62.2/ 86.7
 2013-Aug-19 00:00     349.58223 -37.51744 0.05200457913927  15.06 148.8420 /L   49.9/ 93.7
 2013-Aug-20 00:00     347.77143 -38.88198 0.05657150488845  15.25 148.9095 /L   40.5/ 98.2
 2013-Aug-21 00:00     346.16525 -40.00418 0.06121223511838  15.43 148.7881 /L   36.1/ 99.8
 2013-Aug-22 00:00     344.73280 -40.93397 0.06591596395006  15.60 148.5327 /L   37.8/ 98.7
 2013-Aug-23 00:00     343.44894 -41.70873 0.07067495969589  15.76 148.1815 /L   44.4/ 95.0
 2013-Aug-24 00:00     342.29313 -42.35687 0.07548366757863  15.92 147.7613 /L   53.6/ 89.1
 2013-Aug-25 00:00     341.24854 -42.90021 0.08033808438293  16.07 147.2909 /L   64.0/ 81.6


Setups


We're going to start with the following setup, which should produce an echo quickly,
and then we'll do ranging measurements.  We plan to do imaging as soon as possible
during the first track.  We expect a bandwidth of roughly 10 Hz based on the bandwidth 
of about 3 Hz seen at Arecibo in 2012.

CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:          2x20s
Bandwidth:                4000 Hz 
Sampling interval:        1250 x 0.1 usec
FFT for PFS files:        4096 for 1.95 Hz resolution 

Ranging setups:
---------------------------------------------------------------------------
10-usec
baud             10 usec
code            127
PRP            1270 usec
FFT             128   
ncoh              1 
bandwidth       787 Hz   
resolution      6.2 Hz
TXOFF          +100Hz  (echo in bin 64 + 16 = 80)
---------------------------------------------------------------------------
11-usec 
baud             11 usec
code            127
PRP            1397 usec
FFT              128  
ncoh              1 
bandwidth       716 Hz   
resolution      5.6 Hz
TXOFF          +100 Hz  (echo in bin 64 + 18 = 82) 
-------------------------------------------------------------------------
1-usec ranging 
baud            1 usec
code            255
FFT             128
ncoh             8
bandwidth       490  Hz     
resolution       3.8 Hz
TXOFF          +50 Hz -> echo would be centered at 64 + 13 = 77


_____________________________________________________________________
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/data0/2005wk4/raw/

2005 WK4 POINTING:

  OSOD and predicts will be on aardvark:

Monostatic with the new waveform generator:
/export/data3/osod/ops/a277475/PRDX.OUT.14v-14-14.s79
                             /PUNCH.OUT.14v-14-14.s79
                                         /EPH.OUT.s79

POINTING  

Date (UTC)  DOY hhmmss  RA        Dec    Macro  LHA    Dec    RTT  OSOD
2013 AUG 10 222 070000  23.1690   4.7560   A    1.700 -2.600  21.3  s79
2013 AUG 10 222 080000  22.8750   4.3179   A    1.800 -2.600  21.4  
2013 AUG 10 222 090000  22.5760   3.8811   A    1.800 -2.600  21.4  
2013 AUG 10 222 100000  22.2740   3.4458   A    1.800 -2.600  21.4  
2013 AUG 10 222 110000  21.9710   3.0121   A    1.900 -2.600  21.5  
2013 AUG 10 222 120000  21.6670   2.5801   A    1.800 -2.500  21.6 
2013 AUG 10 222 130000  21.3660   2.1502   A    1.800 -2.600  21.6  
2013 AUG 10 222 140000  21.0680   1.7224   A    1.800 -2.600  21.7  

2013 AUG 12 224 110000  10.3460 -14.5732   A    1.600 -2.200  25.9  s79
2013 AUG 12 224 120000  10.1200 -14.8652   A    1.600 -2.100  26.0  
2013 AUG 12 224 130000   9.8960 -15.1529   A    1.600 -2.100  26.2  
2013 AUG 12 224 140000   9.6770 -15.4364   A    1.600 -2.100  26.3  
2013 AUG 12 224 150000   9.4630 -15.7159   A    1.500 -2.100  26.4  


Transmit offsets are given in millidegrees.  


PRDX.OUT.14f-14-14.s79 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2013 AUG 10 07:00 21.3097076229 -96020.577 283.8672 4.7560 23.169 14.045 2013 AUG 10 07:10 21.3164713804 -96978.906 286.4229 4.6829 23.121 16.077 2013 AUG 10 07:20 21.3233037637 -97978.641 288.9786 4.6098 23.072 18.104 2013 AUG 10 07:30 21.3302076555 -99019.204 291.5346 4.5368 23.023 20.122 2013 AUG 10 07:40 21.3371859456 -100099.934 294.0906 4.4638 22.973 22.130 2013 AUG 10 07:50 21.3442413322 -101220.086 296.6468 4.3908 22.924 24.127 2013 AUG 10 08:00 21.3513765843 -102378.834 299.2030 4.3179 22.875 26.110 2013 AUG 10 08:10 21.3585943836 -103575.274 301.7594 4.2450 22.825 28.076 2013 AUG 10 08:20 21.3658973384 -104808.421 304.3159 4.1721 22.775 30.022 2013 AUG 10 08:30 21.3732879854 -106077.219 306.8725 4.0993 22.726 31.947 2013 AUG 10 08:40 21.3807687842 -107380.534 309.4292 4.0265 22.676 33.846 2013 AUG 10 08:50 21.3883421128 -108717.163 311.9860 3.9538 22.626 35.716 2013 AUG 10 09:00 21.3960102546 -110085.832 314.5429 3.8811 22.576 37.554 2013 AUG 10 09:10 21.4037754244 -111485.203 317.0999 3.8084 22.526 39.354 2013 AUG 10 09:20 21.4116397102 -112913.871 319.6570 3.7358 22.475 41.111 2013 AUG 10 09:30 21.4196051224 -114370.373 322.2141 3.6633 22.425 42.821 2013 AUG 10 09:40 21.4276735517 -115853.186 324.7713 3.5907 22.375 44.477 2013 AUG 10 09:50 21.4358468025 -117360.732 327.3285 3.5182 22.324 46.072 2013 AUG 10 10:00 21.4441265367 -118891.381 329.8858 3.4458 22.274 47.599 2013 AUG 10 10:10 21.4525143151 -120443.455 332.4432 3.3734 22.224 49.050 2013 AUG 10 10:20 21.4610115872 -122015.231 335.0005 3.3010 22.173 50.414 2013 AUG 10 10:30 21.4696196725 -123604.943 337.5579 3.2287 22.122 51.684 2013 AUG 10 10:40 21.4783397652 -125210.789 340.1154 3.1565 22.072 52.848 2013 AUG 10 10:50 21.4871729245 -126830.930 342.6728 3.0843 22.021 53.896 2013 AUG 10 11:00 21.4961200948 -128463.497 345.2302 3.0121 21.971 54.817 2013 AUG 10 11:10 21.5051820732 -130106.595 347.7877 2.9400 21.920 55.599 2013 AUG 10 11:20 21.5143595385 -131758.305 350.3451 2.8679 21.869 56.235 2013 AUG 10 11:30 21.5236530188 -133416.689 352.9025 2.7959 21.819 56.713 2013 AUG 10 11:40 21.5330629213 -135079.794 355.4599 2.7239 21.768 57.028 2013 AUG 10 11:50 21.5425895005 -136745.655 358.0173 2.6520 21.718 57.175 2013 AUG 10 12:00 21.5522328881 -138412.299 0.5746 2.5801 21.667 57.150 2013 AUG 10 12:10 21.5619930697 -140077.752 3.1318 2.5083 21.617 56.954 2013 AUG 10 12:20 21.5718698851 -141740.039 5.6890 2.4366 21.567 56.591 2013 AUG 10 12:30 21.5818630508 -143397.191 8.2461 2.3649 21.516 56.065 2013 AUG 10 12:40 21.5919721305 -145047.246 10.8032 2.2933 21.466 55.384 2013 AUG 10 12:50 21.6021965659 -146688.256 13.3601 2.2217 21.416 54.556 2013 AUG 10 13:00 21.6125356475 -148318.289 15.9170 2.1502 21.366 53.593 2013 AUG 10 13:10 21.6229885463 -149935.434 18.4738 2.0787 21.316 52.504 2013 AUG 10 13:20 21.6335542926 -151537.805 21.0305 2.0073 21.266 51.299 2013 AUG 10 13:30 21.6442317779 -153123.544 23.5870 1.9360 21.217 49.991 2013 AUG 10 13:40 21.6550197796 -154690.825 26.1434 1.8647 21.167 48.588 2013 AUG 10 13:50 21.6659169332 -156237.856 28.6997 1.7935 21.118 47.101 2013 AUG 10 14:00 21.6769217652 -157762.888 31.2559 1.7224 21.068 45.537 2013 AUG 11 11:00 23.3150209093 -220079.397 352.4704 -6.6392 15.716 47.341 2013 AUG 11 11:10 23.3304999384 -221589.334 355.0212 -6.7005 15.672 47.613 2013 AUG 11 11:20 23.3460848922 -223101.601 357.5719 -6.7617 15.628 47.750 2013 AUG 11 11:30 23.3617758735 -224614.263 0.1227 -6.8227 15.584 47.751 2013 AUG 11 11:40 23.3775728349 -226125.383 2.6734 -6.8837 15.541 47.615 2013 AUG 11 11:50 23.3934756148 -227633.027 5.2240 -6.9445 15.497 47.345 2013 AUG 11 12:00 23.4094838804 -229135.266 7.7745 -7.0053 15.453 46.941 2013 AUG 11 12:10 23.4255972069 -230630.180 10.3250 -7.0659 15.409 46.409 2013 AUG 11 12:20 23.4418149997 -232115.863 12.8755 -7.1265 15.366 45.752 2013 AUG 11 12:30 23.4581365525 -233590.426 15.4258 -7.1869 15.322 44.977 2013 AUG 11 12:40 23.4745610202 -235052.002 17.9760 -7.2472 15.279 44.089 2013 AUG 11 12:50 23.4910874276 -236498.748 20.5262 -7.3074 15.236 43.095 2013 AUG 11 13:00 23.5077146643 -237928.849 23.0762 -7.3675 15.192 42.001 2013 AUG 11 13:10 23.5244415080 -239340.524 25.6262 -7.4275 15.149 40.815 2013 AUG 11 13:20 23.5412666055 -240732.025 28.1760 -7.4874 15.106 39.542 2013 AUG 11 13:30 23.5581884755 -242101.646 30.7257 -7.5472 15.064 38.190 2013 AUG 11 13:40 23.5752055396 -243447.721 33.2752 -7.6068 15.021 36.765 2013 AUG 11 13:50 23.5923160764 -244768.633 35.8246 -7.6664 14.978 35.273 2013 AUG 11 14:00 23.6095182735 -246062.812 38.3739 -7.7258 14.936 33.718 2013 AUG 11 14:10 23.6268102035 -247328.739 40.9230 -7.7852 14.894 32.108 2013 AUG 11 14:20 23.6441898344 -248564.954 43.4720 -7.8444 14.851 30.445 2013 AUG 11 14:30 23.6616550338 -249770.052 46.0208 -7.9036 14.809 28.735 2013 AUG 11 14:40 23.6792035660 -250942.691 48.5694 -7.9626 14.768 26.982 2013 AUG 11 14:50 23.6968331244 -252081.590 51.1179 -8.0215 14.726 25.190 2013 AUG 11 15:00 23.7145412938 -253185.536 53.6662 -8.0803 14.685 23.361

2005 WK4 GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------ ...not available yet... ------------------------------------------------------------------------------ Goldstone Radar Astrometry: 2013 08 03 11:30:00 P 393710.727 1.5 8560.D6 -14 -14 Brozovic, Benner Correction of 0 Hz to s58 from CW echoes w/0.49 Hz res'n. Echo is ~9 Hz wide. 2013 08 03 11:40:00 R 34.39436879 10.0 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 10 and 11 usec bauds and 127 length code Range correction to s58 is +73.5 usec 2013 08 03 12:10:00 R 34.31176595 1.0 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 0.25 usec baud and 127 length code Range correction to s60 is -4.25 usec 2013 08 05 10:20:00 P 328621.450 0.5 8560.D6 -14 -14 Brozovic, Benner Correction of +0.5 Hz to s62 from CW echoes w/0.1 Hz res'n. Echo is ~9 Hz wide. 2013 08 05 10:30:00 R 27.47733391 1.0 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 1 usec baud and 255 length code Range correction to s62 is -6 usec 2013 08 05 11:30:00 R 27.34010275 0.5 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 0.125 usec baud and 255 length code Range correction to s64 is +0.375 usec 2013 08 06 08:20:00 R 24.82263194 0.5 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 0.125 usec baud and 255 length code Range correction to s66 is -2.125 usec 2013 08 07 08:00:00 R 22.54227999 0.5 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 0.125 usec baud and 255 length code Range correction to s70 is -2.75 usec 2013 08 08 09:00:00 R 21.03367211 0.25 8560.D6 -14 Brozovic, Busch, Benner GSSR, delay correction based on 0.025 usec baud and 4000 length code Range correction to s72 is -0.65 usec 2013 08 09 09:50:00 R 20.66283548 0.25 8560.D6 -14 Brozovic, Busch, Benner GSSR, delay correction based on 0.025 usec baud and 4000 length code Range correction to s77 is -0.313 usec
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 183-610 | FAX: (818) 393-4445 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/2005WK4/2005WK4_planning.html

Asteroid Radar Astronomy
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