(162421) 2000 ET70 Goldstone Radar Observations Planning


Background


(162421) 2000 ET70 was discovered by Lincoln Laboratory ETS (LINEAR) in New Mexico on March 8, 2000. 
Little is known about this Aten-class Potentially Hazardous Asteroid except that its absolute magnitude of 18.1, 
which suggests a diameter of ~750 m (within a factor of two).  Whiteley (2001) classified 2000 ET70 as an 
X-type object, which is an ambiguous group that includes objects that are large and dark, metallic,
and small and bright.  Thus, the composition of this object is effectively unknown.

2000 ET70 will approach within 0.045 AU (17.7 lunar distances) on February 19, 2012.  This asteroid
will be a strong radar target at Goldstone and a very strong imaging target at Arecibo.
We hope to obtain delay-Doppler images with resolutions at least as fine as 0.25 microseconds. 
 
2000 ET70 will brighten to 13th magnitude in the second half of February when it will be an excellent
target for photometry, spectroscopy, and infrared radiometry.

Update on 2012 Feb 13: Arecibo radar imaging by Shantanu Naidu and Jean-Luc Margot suggests that 2000 ET70 is roughly 1.5 km in diameter 
and that it has a period of about 9 hours.  Consequently, we have revised the estimated SNRs
in the table below.  This will be a significantly better imaging target than we originally anticipated.
Shantanu posted an Arecibo radar image at:
http://www2.ess.ucla/~spn/2000ET70.html
Orbital and Physical Characteristics  
 orbit type               Aten
 semimajor axis           0.947  AU     
 eccentricity             0.124 
 inclination              22.3 deg       
 perihelion distance      0.830 AU     
 aphelion distance        1.064 AU     
 absolute magnitude (H)   18.1
 diameter                 ~0.75 km (+-a factor of two)  (updated: roughly 1.5 km)
 rotation period          unknown, but apparently about 9 h
 pole direction           unknown 
 lightcurve amplitude     unknown
 spectral class           X        (Whiteley, 2001)

Last update: 2012 February 18

Discovery MPEC

 M.P.E.C. 2000-E54                                Issued 2000 Mar. 13, 18:56 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.

             Prepared using the Tamkin Foundation Computer Network

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

                                   2000 ET70

Observations:
     K00E70T* C2000 03 08.12035 06 02 57.73 -02 15 12.8          17.0        704
     K00E70T  C2000 03 08.13401 06 02 59.79 -02 16 27.9          17.0        704
     K00E70T  C2000 03 08.14748 06 03 01.85 -02 17 41.7          16.7        704
     K00E70T  C2000 03 08.16108 06 03 03.89 -02 18 56.5          16.7        704
     K00E70T  C2000 03 08.17496 06 03 05.98 -02 20 11.9          17.1        704
     K00E70T  C2000 03 09.08404 06 05 38.55 -03 40 22.6          16.1 V      713
     K00E70T  C2000 03 09.11875 06 05 43.60 -03 43 20.2          16.4 V      713
     K00E70T  C2000 03 09.14132 06 05 46.86 -03 45 15.3          16.3 V      713
     K00E70T  C2000 03 09.15278 06 05 48.52 -03 46 13.9          16.1 V      713
     K00E70T  C2000 03 09.16429 06 05 50.19 -03 47 06.9          16.1        704
     K00E70T  C2000 03 09.17719 06 05 52.06 -03 48 12.3          16.1        704
     K00E70T  C2000 03 09.19007 06 05 53.94 -03 49 17.3          16.4        704
     K00E70T  C2000 03 09.20298 06 05 55.84 -03 50 22.9          16.7        704
     K00E70T  C2000 03 09.21594 06 05 57.76 -03 51 28.3          16.6        704
     K00E70T  C2000 03 09.85803 06 07 40.56 -04 44 38.2                      587
     K00E70T  C2000 03 09.86373 06 07 41.46 -04 45 03.4                      587
     K00E70T  C2000 03 09.86608 06 07 41.79 -04 45 13.6                      620
     K00E70T  C2000 03 09.86898 06 07 42.23 -04 45 27.6          17.0 V      620
     K00E70T  C2000 03 09.87120 06 07 42.57 -04 45 38.4                      620
     K00E70T  C2000 03 09.87337 06 07 42.90 -04 45 48.9          17.2 V      620
     K00E70T  C2000 03 10.05179 06 08 12.07 -05 00 00.1                      747
     K00E70T  C2000 03 10.05336 06 08 12.29 -05 00 07.7                      747
     K00E70T  C2000 03 10.05493 06 08 12.50 -05 00 15.1                      747
     K00E70T  C2000 03 10.05654 06 08 12.72 -05 00 22.8                      747
     K00E70T  C2000 03 10.05818 06 08 12.94 -05 00 30.5                      747
     K00E70T  C2000 03 10.75427 06 09 59.53 -05 54 47.1                      557
     K00E70T  C2000 03 10.75544 06 09 59.72 -05 54 53.1                      557
     K00E70T  C2000 03 10.75662 06 09 59.81 -05 54 57.3                      557
     K00E70T  C2000 03 10.75779 06 10 00.02 -05 55 02.9                      557
     K00E70T  C2000 03 10.80341 06 10 06.15 -05 58 28.5          16.3 R      118
     K00E70T  C2000 03 10.80484 06 10 06.34 -05 58 35.1                      118
     K00E70T  C2000 03 10.80747 06 10 06.68 -05 58 46.8                      118
     K00E70T  C2000 03 10.82284 06 10 08.71 -05 59 56.1          16.4        461
     K00E70T  C2000 03 10.82382 06 10 08.84 -06 00 00.2                      461
     K00E70T  C2000 03 10.82532 06 10 09.05 -06 00 07.0                      461
     K00E70T  C2000 03 11.11759 06 10 53.33 -06 21 49.1          16.5 R      858
     K00E70T  C2000 03 11.11958 06 10 53.58 -06 21 58.0          16.6 R      858
     K00E70T  C2000 03 11.12271 06 10 54.01 -06 22 12.1          16.7 R      858
     K00E70T  C2000 03 11.16100 06 10 59.58 -06 25 00.3                      670
     K00E70T  C2000 03 11.18029 06 11 02.12 -06 26 25.6                      670
     K00E70T  C2000 03 11.19757 06 11 04.35 -06 27 42.0                      670
     K00E70T  C2000 03 11.78402 06 12 30.87 -07 10 06.4          16.1 R      046
     K00E70T  C2000 03 11.78572 06 12 31.05 -07 10 13.8                      046
     K00E70T  C2000 03 11.78679 06 12 31.22 -07 10 18.1                      046
     K00E70T  C2000 03 11.78763 06 12 31.33 -07 10 21.1                      046
     K00E70T  C2000 03 11.78918 06 12 31.54 -07 10 28.4                      046
     K00E70T  C2000 03 11.79166 06 12 31.87 -07 10 38.9                      046
     K00E70T  C2000 03 12.08807 06 13 14.32 -07 31 16.3          16.5 V      649
     K00E70T  C2000 03 12.08896 06 13 14.37 -07 31 23.0          16.8 R      750
     K00E70T  C2000 03 12.09155 06 13 14.79 -07 31 30.4          17.5 V      649
     K00E70T  C2000 03 12.09304 06 13 14.96 -07 31 36.6          17.5 V      649
     K00E70T  C2000 03 12.09614 06 13 15.28 -07 31 53.0          16.7 R      750
     K00E70T  C2000 03 12.10433 06 13 16.88 -07 32 21.8          16.1 R      858
     K00E70T  C2000 03 12.10451 06 13 16.41 -07 32 24.3          17.5 V      649
     K00E70T  C2000 03 12.10617 06 13 16.67 -07 32 31.2          17.4 V      734
     K00E70T  C2000 03 12.10684 06 13 16.69 -07 32 33.8          17.5 V      649
     K00E70T  C2000 03 12.10720 06 13 17.25 -07 32 33.3          16.1 R      858
     K00E70T  C2000 03 12.11196 06 13 17.41 -07 32 55.5          17.3 V      734
     K00E70T  C2000 03 12.11250 06 13 17.94 -07 32 55.5          16.3 R      858
     K00E70T  C2000 03 12.11491 06 13 17.78 -07 33 07.4          17.3 V      734
     K00E70T  C2000 03 12.11637 06 13 17.90 -07 33 16.9          16.6 R      750
     K00E70T  C2000 03 12.20040 06 13 29.07 -07 38 56.3          17.1        704
     K00E70T  C2000 03 12.20054 06 13 29.10 -07 38 56.4          17.0        704
     K00E70T  C2000 03 12.21364 06 13 30.86 -07 39 51.3          17.9        704
     K00E70T  C2000 03 12.21377 06 13 30.85 -07 39 50.6          17.8        704
     K00E70T  C2000 03 12.22692 06 13 32.52 -07 40 44.6          17.6        704
     K00E70T  C2000 03 12.24131 06 13 34.40 -07 41 42.8          18.1        704
     K00E70T  C2000 03 12.24145 06 13 34.44 -07 41 44.3          17.3        704
     K00E70T  C2000 03 12.25444 06 13 36.12 -07 42 37.5          18.2        704
     K00E70T  C2000 03 12.25457 06 13 36.20 -07 42 37.1          17.4        704
     K00E70T  C2000 03 12.41930 06 14 01.65 -07 53 53.5          16.6 V      900
     K00E70T  C2000 03 12.42955 06 14 02.90 -07 54 35.2                      900
     K00E70T  C2000 03 12.75926 06 14 49.27 -08 16 44.1          16.7 V      104
     K00E70T  C2000 03 12.76146 06 14 49.57 -08 16 52.6                      104
     K00E70T  C2000 03 12.76481 06 14 49.98 -08 17 06.0                      104
     K00E70T  C2000 03 12.81042 06 14 55.73 -08 20 07.4          17.4 R      151
     K00E70T  C2000 03 12.81380 06 14 56.10 -08 20 21.7          17.0 R      151
     K00E70T  C2000 03 12.81667 06 14 56.64 -08 20 33.5          16.8 R      151
     K00E70T  C2000 03 12.81823 06 14 56.71 -08 20 38.2          16.8 R      151
     K00E70T  C2000 03 12.82419 06 14 57.51 -08 21 03.3          17.4 R      151
     K00E70T  C2000 03 12.82628 06 14 57.78 -08 21 11.2          17.0 R      151
     K00E70T FC2000 03 12.85954 06 15 01.75 -08 23 21.1                      595
     K00E70T FC2000 03 12.86221 06 15 02.13 -08 23 32.3                      595
     K00E70T FC2000 03 12.86500 06 15 02.51 -08 23 42.8                      595
     K00E70T  C2000 03 12.87056 06 15 03.20 -08 24 04.3          17.2 V      595

Observer details:
046 Klet.  Observers J. Ticha, M. Tichy.  0.57-m f/5.2 reflector + CCD.
104 San Marcello Pistoiese.  Observers L. Tesi, A. Boattini, M. Tombelli.
    Measurers G. Forti, L. Tesi, A. Boattini, M. Tombelli.  0.40-m f/5
    reflector + CCD.
118 Modra.  Observers L. Kornos, P. Koleny.  0.6-m f/5.5 reflector + CCD.
151 Eschenberg Observatory, Winterthur.  Observer M. Griesser.  0.25-m f/8.0
    reflector + CCD.
461 JATE Asteroid Survey, Piszkesteto Stn. (Konkoly).  Observers K. Sarneczky,
    L. Kiss, K. Sziladi.  0.60-m Schmidt + CCD.
557 Ondrejov.  Observers L. Sarounova, P. Kusnirak.  0.65-m f/3.6 reflector
    + CCD.
587 Sormano.  Observers P. Sicoli, P. Chiavenna.  0.5-m reflector + CCD.
595 Farra d'Isonzo.  Observers G. Lombardi, E. Pettarin.  0.40-m f/4.5
    reflector + CCD.
620 Observatorio Astronomico de Mallorca.  Observers A. Lopez, R. Pacheco.
    0.30-m f/3.3 Schmidt-Cassegrain + CCD.
649 Powell Observatory, Louisburg.  Observers D. Young, J. Alburty.  Measurers
    M. Kirk, R. Fredrick.  0.30-m Schmidt-Cassegrain + CCD.
670 Camarillo.  Observer J. E. Rogers.  0.30-m f/6.7 Helin Telescope + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, M. Elowitz, R. Huber.  Measurers J. Stuart, H. Viggh,
    R. Sayer, J. B. Evans.  1.0-m f/2.15 reflector + CCD.
713 Thornton.  Observer R. A. Koff.  0.20-m f/10 Schmidt-Cassegrain + CCD.
734 Farpoint Observatory.  Observers G. Hug, G. E. Bell.  0.30-m
    Schmidt-Cassegrain + CCD.
747 Baton Rouge Observatory.  Observer W. R. Cooney, Jr.  0.51-m f/8.4
    reflector + CCD.
750 Hobbs Observatory, Fall Creek.  Observer R. Elliott.  0.3-m f/3.3 reflector
    + CCD.
858 Tebbutt Observatory, Edgewood.  Observer F. B. Zoltowski.  0.3-m f/3.3
    Schmidt-Cassegrain + CCD.
900 Moriyama.  Observer Y. Ikari.  0.25-m f/6.3 reflector + CCD.

Orbital elements:
2000 ET70                                                            PHA 0.019D
Epoch 2000 Feb. 26.0 TT = JDT 2451600.5                 Williams
M 122.44889              (2000.0)            P               Q
n   1.06974132     Peri.   46.36885     +0.92711510     -0.32732472
a   0.9468551      Node   331.23945     +0.12481033     +0.72888879
e   0.1233546      Incl.   22.29378     +0.35338361     +0.60131494
P   0.92           H   18.2           G   0.15
From 85 observations 2000 Mar. 8-12.

Ephemeris:
2000 ET70                a,e,i = 0.95, 0.12, 22                  q = 0.8301
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2000 03 07    05 59.70   -00 27.8    0.148    1.033   102.0    69.9    16.6
2000 03 12    06 13.04   -07 24.5    0.176    1.040   100.3    70.1    17.0
2000 03 17    06 23.95   -12 21.8    0.206    1.046    98.5    70.3    17.3
.
.
.
2000 07 30    10 48.60   -38 38.2    0.333    0.924    64.8    96.2    19.1
2000 08 04    11 06.26   -37 07.6    0.306    0.913    62.2   100.5    19.1

Gareth V. Williams           (C) Copyright 2000 MPC           M.P.E.C. 2000-E54

SNR Calculation

Target Name:   2000 ET70

D         = 1.5 km    Based on Arecibo images from 2012 Feb. 12
Period    = 9 h       Based on Arecibo images from 2012 Feb. 12
OC albedo = 0.10      A standard guess.

                 UT                           #                 max
 start date    window      RA, dec   dist   runs        SNR   SNR/run
---------------------------------------------------------------------
2012 Feb 10  08:06-19:01   227, +25  0.076   253        300        21
2012 Feb 11  07:58-18:41   224, +23  0.071   266        400        26
2012 Feb 12  07:50-18:19   222, +21  0.066   279        520        34
2012 Feb 13  07:42-17:55   219, +18  0.062   292        690        43
2012 Feb 14  07:34-17:28   215, +14  0.058   303        900        55
2012 Feb 15  07:26-16:58   212, +10  0.054   312       1100        70
2012 Feb 16  07:19-16:23   207,  +5  0.051   315       1400        87
2012 Feb 17  07:12-15:45   203,   0  0.048   312       1700       100
2012 Feb 18  07:07-15:01   198,  -6  0.046   300       1800       120
2012 Feb 19  07:03-14:13   192, -12  0.045   277       1800       120
2012 Feb 20  07:02-13:19   186, -18  0.046   243       1600       110
2012 Feb 21  07:05-12:20   180, -23  0.047   198       1300        96
2012 Feb 22  07:15-11:13   174, -28  0.048   144        880        76
2012 Feb 23  07:39-09:52   168, -33  0.051    76        490        57

After Feb. 23 2000 ET70 moves too far south for Goldstone to track.

Here are the original SNRs we estimated before the Arecibo observations on Feb. 12:
2012 Feb 10  08:06-19:01  227, +25  0.077    273         45         3
2012 Feb 11  07:58-18:41  224, +23  0.071    287         59         4
2012 Feb 12  07:50-18:19  222, +21  0.066    301         78         5
2012 Feb 13  07:42-17:55  219, +18  0.062    315        100         6
2012 Feb 14  07:34-17:28  215, +14  0.058    328        130         8
2012 Feb 15  07:26-16:58  212, +10  0.054    338        170        10
2012 Feb 16  07:19-16:23  207,  +5  0.051    344        210        13
2012 Feb 17  07:12-15:45  203,   0  0.048    343        250        15
2012 Feb 18  07:07-15:01  198,  -6  0.046    333        280        17
2012 Feb 19  07:03-14:13  192, -12  0.045    313        280        18
2012 Feb 20  07:02-13:19  186, -18  0.046    282        250        17
2012 Feb 21  07:05-12:20  180, -23  0.047    243        200        14
2012 Feb 22  07:15-11:13  174, -28  0.048    198        150        11
2012 Feb 23  07:39-09:52  168, -33  0.051    151         99         9

Goldstone SNRs assume Ptx = 450 kW 

Track Assignments


Goldstone tracks:

        UT          UT          PST                    Duration    Round-trip     
DOY     Date        TX Window   TX Window                hh:mm     time (sec)     SNR/Run 
---     ----        ---------   ---------              ---------    ---------     -------
046     Feb 15      0850-1225   0050-0425 Feb 15         03:35        54            70 
047     Feb 16      0905-1530   0105-0730 Feb 16         06:25        51            87 
048     Feb 17      0705-1225   2305-0425 Feb 16/17      05:20        48           100  
049     Feb 18      0705-0845   2305-0145 Feb 17/18      01:40        46           120 
050     Feb 19      0705-1310   2305-0510 Feb 18/19      06:05        45           120 
051     Feb 20      0710-1220   2310-0420 Feb 19/20      05:10        46           110 
053     Feb 22      0915-1155   0115-0355 Feb 22         02:40        48            76  added
054     Feb 23      0820-1055   0020-0255 Feb 23         02:35        51            57  added

TXON is listed at the earliest time that we can transmit.


Scheduled Arecibo tracks:
(using P = 9 h and D = 1.5 km)
        UT          UT          AST                PST                 Duration     Round-trip     
DOY     Date        TX Window   TX Window          TX Window             hh:mm      time (sec)    SNR/Run 
---     ----        ---------   ---------          ---------           ---------   ----------    ---------
043    Feb 12       0826-1110   0426-0710 Feb 12   0026-0310 Feb 12      02:44         67          750
044    Feb 13	    0810-1054   0410-0654 Feb 13   0010-0254 Feb 13      02:44         62	   960
045    Feb 14	    0755-1034   0355-0634 Feb 14   2355-0234 Feb 13/14   02:39         58	  1200 
046    Feb 15	    0742-1010   0342-0610 Feb 15   2342-0210 Feb 14/15   02:38         54	  1600
047    Feb 16	    0734-0937   0334-0537 Feb 16   2334-0137 Feb 15/16   02:03         51	  1900
048    Feb 17	    0738-0849   0338-0449 Feb 17   2338-0049 Feb 16/17   01:11         46	  1900 



Uncertainties

From Jon Giorgini, 2012 Feb 16:

Arecibo added a new delay from the 13th and incremented to s51.  
Here is the delta s51-s49:

    RECEIVER    U.T.       RT-RANGE        DOPPLER     LHA      DEC      RA      EL       D-DOP 
s51: 2012 FEB 17 07:00     48.4604573815   252881.771 291.0913   1.0624 203.695  17.694      252881.771 
s49: 2012 FEB 17 07:00     48.4604518536   252882.166 291.0913   1.0624 203.695  17.694      252882.166

Being internal to the existing data arc, the new measurement makes 
a +5.5 usec and -0.395 Hz difference tonight. I've synchronized and 
updated GSSR data files accordingly.

Here are s51 3-sigma S/X-band uncertainties:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2012-Feb-17 00:00       1.760        0.48        1.74       0.000023
 2012-Feb-18 00:00       1.893        0.68        2.46       0.000045
 2012-Feb-19 00:00       1.995        0.85        3.10       0.000073
 2012-Feb-20 00:00       2.050        0.98        3.58       0.000108
 2012-Feb-21 00:00       2.049        1.05        3.83       0.000146

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

From Jon Giorgini, 2012 Feb. 15:

Synchronizing Arecibo/GSSR astrometric datasets and merging in 
new optical -- from January, but just reported last night -- new 
orbit solution s49 was produced for 162421 (2000 ET70). 

Predicts have been updated to s49 at both sites.

With 189 optical measurements (1977-Feb-18 to 2012-Feb-1), 4 delay
and 1 Doppler (3 delays from AO, 1 delay from GSSR, 1 Doppler from AO)
formal 3-sigma S/X-band uncertainties are: 
  
                     arcsec         Hz         Hz          seconds
 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2012-Feb-13 00:00       1.164        0.14        0.50       0.000005
 2012-Feb-14 00:00       1.277        0.07        0.26       0.000005
 2012-Feb-15 00:00       1.402        0.13        0.46       0.000004
 2012-Feb-16 00:00       1.536        0.27        0.97       0.000008
 2012-Feb-17 00:00       1.671        0.43        1.58       0.000020
 2012-Feb-18 00:00       1.793        0.61        2.22       0.000039
 2012-Feb-19 00:00       1.886        0.77        2.80       0.000064
 2012-Feb-20 00:00       1.936        0.89        3.24       0.000095
 2012-Feb-21 00:00       1.934        0.95        3.47       0.000128

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

From Jon Giorgini, 2012 Feb. 14:

Here are formal 3-sigma X-band uncertainties for tonight's Arecibo
augmented orbit solution #43:

 Date__(UT)__HR:MN  POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2012-Feb-14 00:00       2.678         4.76       0.000075
 2012-Feb-15 00:00       2.894         5.07       0.000124
 2012-Feb-16 00:00       3.110         5.50       0.000174
 2012-Feb-17 00:00       3.309         6.05       0.000228
 2012-Feb-18 00:00       3.467         6.65       0.000284
 2012-Feb-19 00:00       3.560         7.19       0.000343
 2012-Feb-20 00:00       3.573         7.56       0.000402
 2012-Feb-21 00:00       3.504         7.71       0.000461

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

From Jon Giorgini, 2012 Feb. 9:

With 186 optical measurements (1977-Feb-18 to 2012-Feb-1),
162421 (2000 ET70) orbit solution #41 was estimated. 

Formal 3-sigma S-band uncertainties are below:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig   RT_delay_3sig
 2012-Feb-12 00:00       2.856        1.45        0.000984
 2012-Feb-13 00:00       3.175        1.59        0.000950
 2012-Feb-14 00:00       3.545        1.81        0.000910
 2012-Feb-15 00:00       3.968        2.13        0.000861
 2012-Feb-16 00:00       4.435        2.55        0.000803
 2012-Feb-17 00:00       4.919        3.04        0.000734
 2012-Feb-18 00:00       5.374        3.56        0.000658
 2012-Feb-19 00:00       5.735        4.00        0.000584

NOTE: the Doppler uncertainties are for S-band.  Multiply by 3.6 to obtain X-band uncertainties.

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

From JPL Horizons, Dec 03 2011, Solution #37, #obs 173 (1977-2011)

 Date__(UT)__HR:MN     POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2012-Feb-10 00:00          6.969        2.52        9.15       0.001804
 2012-Feb-11 00:00          7.428        2.64        9.59       0.001850
 2012-Feb-12 00:00          7.930        2.76       10.03       0.001899
 2012-Feb-13 00:00          8.475        2.88       10.47       0.001948
 2012-Feb-14 00:00          9.064        2.99       10.87       0.001995
 2012-Feb-15 00:00          9.696        3.10       11.26       0.002034
 2012-Feb-16 00:00         10.367        3.25       11.80       0.002061
 2012-Feb-17 00:00         11.067        3.52       12.80       0.002065
 2012-Feb-18 00:00         11.770        4.03       14.63       0.002039
 2012-Feb-19 00:00         12.421        4.77       17.32       0.001976
 2012-Feb-20 00:00         12.937        5.58       20.29       0.001875
 2012-Feb-21 00:00         13.229        6.25       22.71       0.001745
 2012-Feb-22 00:00         13.244        6.59       23.95       0.001599
 2012-Feb-23 00:00         12.988        6.58       23.92       0.001454
 2012-Feb-24 00:00  m      12.519        6.30       22.90       0.001326
 2012-Feb-25 00:00  m      11.914        5.86       21.28       0.001224
 2012-Feb-26 00:00  m      11.243        5.35       19.43       0.001152
 2012-Feb-27 00:00  m      10.559        4.84       17.59       0.001110
 2012-Feb-28 00:00  m       9.895        4.37       15.88       0.001094

******************************************************************************************
Apparent Magnitudes and Solar Elongations:

 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC.  APmag            delta    S-O-T /r
 2012-Feb-01 00:00     240.67976  36.31770  16.66 0.13099642116259   87.3401 /L
 2012-Feb-02 00:00     239.69369  35.67356  16.54 0.12514145019820   88.4023 /L
 2012-Feb-03 00:00     238.62694  34.95723  16.41 0.11929301038084   89.5419 /L
 2012-Feb-04 00:00     237.46886  34.15689  16.27 0.11346007766153   90.7700 /L
 2012-Feb-05 00:00     236.20713  33.25816  16.12 0.10765314511623   92.1002 /L
 2012-Feb-06 00:00     234.82751  32.24353  15.97 0.10188462883937   93.5485 /L
 2012-Feb-07 00:00     233.31344  31.09154  15.80 0.09616940438067   95.1337 /L
 2012-Feb-08 00:00     231.64572  29.77583  15.63 0.09052551938248   96.8786 /L
 2012-Feb-09 00:00     229.80204  28.26403  15.44 0.08497514068742   98.8100 /L
 2012-Feb-10 00:00     227.75659  26.51642  15.24 0.07954580566013  100.9591 /L
 2012-Feb-11 00:00     225.47971  24.48470  15.02 0.07427205217597  103.3616 /L
 2012-Feb-12 00:00     222.93770  22.11102  14.80 0.06919748663768  106.0562 /L
 2012-Feb-13 00:00     220.09298  19.32812  14.56 0.06437728590338  109.0814 /L
 2012-Feb-14 00:00     216.90497  16.06212  14.31 0.05988096032476  112.4679 /L
 2012-Feb-15 00:00     213.33192  12.24006  14.06 0.05579483794776  116.2236 /L
 2012-Feb-16 00:00     209.33439   7.80546  13.80 0.05222306360570  120.3089 /L
 2012-Feb-17 00:00     204.88089   2.74436  13.57 0.04928497932270  124.5994 /L
 2012-Feb-18 00:00     199.95587  -2.88091  13.36 0.04710609377918  128.8460 /L
 2012-Feb-19 00:00     194.56981  -8.90285  13.20 0.04580083313343  132.6590 /L
 2012-Feb-20 00:00     188.76925 -15.04880  13.11 0.04544941686855  135.5686 /L
 2012-Feb-21 00:00     182.64321 -20.98796  13.10 0.04607735659671  137.1886 /L
 2012-Feb-22 00:00     176.32142 -26.41328  13.16 0.04764837156990  137.4063 /L
 2012-Feb-23 00:00     169.96167 -31.11507  13.30 0.05007497981162  136.4288 /L
 2012-Feb-24 00:00     163.72806 -35.00915  13.48 0.05324040241275  134.6416 /L
 2012-Feb-25 00:00     157.76716 -38.11823  13.69 0.05702082855561  132.4248 /L
 2012-Feb-26 00:00     152.19005 -40.53098  13.91 0.06130084135303  130.0584 /T
 2012-Feb-27 00:00     147.06495 -42.36306  14.13 0.06598084725469  127.7134 /T
 2012-Feb-28 00:00     142.41998 -43.73050  14.34 0.07097874076220  125.4801 /T


Setups


Arecibo images on Feb. 12 and 13 suggest that the bandwidth at Goldstone will be about 16 Hz,
so our standard CW setup below should be ideal.


CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           2                          
Dwell                     20 seconds                      
Bandwidth:                4000 Hz 
Sampling interval:        2500 x 0.1 usec
VME FFT for PSD files:    4096 for 0.98 Hz resolution 


Ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec
baud             10 usec
code            127
PRP            1270 usec
FFT              64   
ncoh              1 
bandwidth       787 Hz   
resolution     12.3 Hz
TXOFF          +150 Hz  (echo in bin 32+12=44)
---------------------------------------------------------------------------
127 x 64 11-usec 
baud             11 usec
code            127
PRP            1397 usec
FFT              64  
ncoh              1 
bandwidth       717 Hz   
resolution     11.2 Hz
TXOFF          +150 Hz  (echo in bin 32+13=45) 
-------------------------------------------------------------------------
1 usec ranging
baud              1 usec
code            255
ncoh              2
bandwidth       1961 Hz
FFT             128
resolution      15.3 Hz
TXoff           +200 Hz  (echo in bin 64+13=77)
-------------------------------------------------------------------------------
Tentatively:

0.25-usec imaging  

baud           0.25 usec
code            255
FFT             512
ncoh             30
bandwidth       512 Hz    
resolution      1 Hz
TXOFF           +80 Hz  (echo in bin 256+80=336)
---------------------------------
0.125-usec imaging 

baud          0.125 usec
code            255  
FFT             256 
ncoh             60
bandwidth       523 Hz      
resolution       2 Hz
TXOFF           +50 Hz  (echo in bin 128+25=153) 
_____________________________________________________________________
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: VME Data should be moved to the appropriate subdirectories in aardvark:/export/data0/2000ET70/raw/

2000 ET70 POINTING:

  OSOD and predicts are on aardvark:

/export/apps0/temp_data/data3/osod/ops/a162421/PRDX.OUT.14f-14-14.s59
                              /PUNCH.OUT.14f-14-14.s59
                              /EPH.OUT.s59
For chirping:
/export/apps0/temp_data/data3/osod/ops/a162421/PRDX.OUT.14v-14-14.s59
                              /PUNCH.OUT.14v-14-14.s59


POINTING  
                                                          TX Offsets    
Date (UTC)   DOY  hhmmss    RA        Dec         Macro   LHA     Dec    RTT    OSOD
2012 02 22   053  080000 174.3773 -28.1817          A                    48.3   59
2012 02 22   053  090000 174.0995 -28.3836          A                    48.4 
2012 02 22   053  100000 173.8215 -28.5827          A     3.7   -2.7     48.4
2012 02 22   053  110000 173.5441 -28.7791          A                    48.6
2012 02 22   053  120000 173.2683 -28.9728          A                    48.7


Feb 23
2012 02 23   054  070000 168.3043 -32.4461          A                    50.8   59
2012 02 23   054  080000 168.0310 -32.6165          A                    50.9 
2012 02 23   054  090000 167.7573 -32.7840          A     3.9   -2.3     51.1
2012 02 23   054  100000 167.4841 -32.9487          A                    51.2
2012 02 23   054  110000 167.2123 -33.1104          A                    51.3



Macros from February 20
2012 02 20   051  070000    187.2147 -16.9249       A                    45.4   
2012 02 20   051  080000    186.9523 -17.1780       A     3.30  -3.20    45.4   s57
2012 02 20   051  090000    186.6876 -17.4299       A                    45.5   

2012 02 20   051  090000    186.6876 -17.4299       B                    45.5   
2012 02 20   051  100000    186.4214 -17.6803       B                    45.5   
2012 02 20   051  110000    186.1544 -17.9291       B     3.40  -3.10    45.5   s57
2012 02 20   051  120000    185.8875 -18.1764       B                    45.5   
2012 02 20   051  130000    185.6217 -18.4221       B                    45.6   

Transmit offsets are given in millidegrees.  


PRDX.OUT.14f-14-14.s59 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2012 FEB 22 09:10 48.3672208479 -230644.101 358.2502 -28.4170 174.053 26.136 2012 FEB 22 09:20 48.3834373747 -232067.185 0.8034 -28.4503 174.007 26.119 2012 FEB 22 09:30 48.3997535915 -233488.417 3.3566 -28.4835 173.960 26.012 2012 FEB 22 09:40 48.4161693087 -234906.086 5.9097 -28.5166 173.914 25.815 2012 FEB 22 09:50 48.4326842267 -236318.484 8.4629 -28.5497 173.868 25.528 2012 FEB 22 10:00 48.4492979062 -237723.916 11.0161 -28.5827 173.821 25.154 2012 FEB 22 10:10 48.4660098103 -239120.700 13.5692 -28.6156 173.775 24.693 2012 FEB 22 10:20 48.4828192590 -240507.172 16.1224 -28.6485 173.729 24.147 2012 FEB 22 10:30 48.4997254870 -241881.687 18.6754 -28.6812 173.683 23.519 2012 FEB 22 10:40 48.5167275940 -243242.625 21.2285 -28.7139 173.636 22.810 2012 FEB 22 10:50 48.5338245671 -244588.394 23.7815 -28.7465 173.590 22.024 2012 FEB 22 11:00 48.5510152934 -245917.429 26.3345 -28.7791 173.544 21.163 2012 FEB 22 11:10 48.5682985459 -247228.202 28.8875 -28.8116 173.498 20.231 2012 FEB 22 11:20 48.5856729918 -248519.218 31.4404 -28.8440 173.452 19.229 2012 FEB 22 11:30 48.6031371952 -249789.024 33.9932 -28.8763 173.406 18.161 2012 FEB 22 11:40 48.6206896193 -251036.207 36.5460 -28.9085 173.360 17.029 2012 FEB 22 11:50 48.6383286252 -252259.400 39.0987 -28.9407 173.314 15.838 2012 FEB 22 12:00 48.6560524949 -253457.284 41.6514 -28.9728 173.268 14.589 2012 FEB 23 08:20 50.9812165771 -301015.667 352.8149 -32.6727 167.940 21.569 2012 FEB 23 08:30 51.0023613603 -302315.887 355.3674 -32.7007 167.894 21.735 2012 FEB 23 08:40 51.0235973488 -303617.767 357.9199 -32.7285 167.849 21.818 2012 FEB 23 08:50 51.0449246015 -304919.668 0.4723 -32.7563 167.803 21.816 2012 FEB 23 09:00 51.0663430625 -306219.952 3.0248 -32.7841 167.757 21.731 2012 FEB 23 09:10 51.0878525563 -307516.984 5.5772 -32.8117 167.712 21.563 2012 FEB 23 09:20 51.1094528025 -308809.133 8.1296 -32.8392 167.666 21.311 2012 FEB 23 09:30 51.1311434068 -310094.780 10.6820 -32.8667 167.621 20.978 2012 FEB 23 09:40 51.1529238475 -311372.319 13.2344 -32.8941 167.575 20.564 2012 FEB 23 09:50 51.1747935052 -312640.159 15.7867 -32.9214 167.530 20.071 2012 FEB 23 10:00 51.1967516448 -313896.728 18.3390 -32.9487 167.484 19.500 2012 FEB 23 10:10 51.2187974217 -315140.477 20.8913 -32.9758 167.439 18.854 2012 FEB 23 10:20 51.2409298838 -316369.882 23.4435 -33.0029 167.393 18.134 2012 FEB 23 10:30 51.2631479683 -317583.448 25.9957 -33.0299 167.348 17.344 2012 FEB 23 10:40 51.2854505228 -318779.711 28.5479 -33.0568 167.303 16.484 2012 FEB 23 10:50 51.3078362793 -319957.239 31.0999 -33.0836 167.257 15.558 2012 FEB 23 11:00 51.3303038708 -321114.642 33.6519 -33.1104 167.212 14.568 Soln 57 2012 FEB 20 06:50 45.4283255882 -25065.957 307.9781 -16.8826 187.258 18.149 2012 FEB 20 07:00 45.4301269742 -26338.822 310.5284 -16.9249 187.215 19.745 2012 FEB 20 07:10 45.4320186792 -27642.995 313.0788 -16.9672 187.171 21.295 2012 FEB 20 07:20 45.4340028595 -28977.208 315.6292 -17.0094 187.128 22.796 2012 FEB 20 07:30 45.4360815747 -30340.138 318.1798 -17.0516 187.084 24.243 2012 FEB 20 07:40 45.4382567896 -31730.401 320.7304 -17.0938 187.040 25.633 2012 FEB 20 07:50 45.4405303703 -33146.562 323.2811 -17.1359 186.996 26.962 2012 FEB 20 08:00 45.4429040747 -34587.133 325.8318 -17.1780 186.952 28.226 2012 FEB 20 08:10 45.4453795660 -36050.577 328.3826 -17.2201 186.908 29.420 2012 FEB 20 08:20 45.4479583923 -37535.313 330.9335 -17.2621 186.864 30.541 2012 FEB 20 08:30 45.4506419839 -39039.717 333.4845 -17.3041 186.820 31.583 2012 FEB 20 08:40 45.4534316726 -40562.128 336.0354 -17.3461 186.776 32.543 2012 FEB 20 08:50 45.4563286447 -42100.847 338.5865 -17.3880 186.732 33.417 2012 FEB 20 09:00 45.4593339996 -43654.144 341.1376 -17.4299 186.688 34.199 2012 FEB 20 09:10 45.4624486864 -45220.261 343.6887 -17.4717 186.643 34.887 2012 FEB 20 09:20 45.4656735471 -46797.412 346.2399 -17.5135 186.599 35.476 2012 FEB 20 09:30 45.4690092863 -48383.794 348.7911 -17.5552 186.555 35.963 2012 FEB 20 09:40 45.4724564930 -49977.581 351.3424 -17.5970 186.510 36.345 2012 FEB 20 09:50 45.4760156218 -51576.937 353.8936 -17.6386 186.466 36.620 2012 FEB 20 10:00 45.4796869928 -53180.012 356.4449 -17.6803 186.421 36.787 2012 FEB 20 10:10 45.4834708072 -54784.951 358.9963 -17.7218 186.377 36.844 2012 FEB 20 10:20 45.4873671252 -56389.896 1.5476 -17.7634 186.332 36.790 2012 FEB 20 10:30 45.4913758874 -57992.989 4.0989 -17.8049 186.288 36.627 2012 FEB 20 10:40 45.4954968990 -59592.374 6.6503 -17.8463 186.243 36.356 2012 FEB 20 10:50 45.4997298297 -61186.206 9.2016 -17.8877 186.199 35.977 2012 FEB 20 11:00 45.5040742316 -62772.651 11.7530 -17.9291 186.154 35.493 2012 FEB 20 11:10 45.5085295173 -64349.888 14.3044 -17.9704 186.110 34.907 2012 FEB 20 11:20 45.5130949894 -65916.118 16.8557 -18.0117 186.065 34.222 2012 FEB 20 11:30 45.5177697969 -67469.563 19.4070 -18.0529 186.021 33.442 2012 FEB 20 11:40 45.5225529990 -69008.469 21.9583 -18.0941 185.976 32.571 2012 FEB 20 11:50 45.5274435047 -70531.116 24.5096 -18.1353 185.932 31.613 2012 FEB 20 12:00 45.5324401149 -72035.813 27.0609 -18.1764 185.888 30.573 2012 FEB 20 12:10 45.5375415243 -73520.906 29.6121 -18.2174 185.843 29.453 2012 FEB 20 12:20 45.5427462907 -74984.783 32.1634 -18.2585 185.799 28.260 2012 FEB 20 12:30 45.5480528772 -76425.871 34.7145 -18.2994 185.754 26.997 2012 FEB 20 12:40 45.5534596325 -77842.646 37.2657 -18.3404 185.710 25.669 2012 FEB 20 12:50 45.5589647948 -79233.630 39.8168 -18.3813 185.666 24.279 2012 FEB 20 13:00 45.5645665115 -80597.401 42.3678 -18.4221 185.622 22.831

2000 ET70 GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 183-601 | 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/2000ET70/2000ET70_planning.html

Asteroid Radar Astronomy
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