(153958) 2002 AM31 Goldstone Radar Observations Planning
(153958) 2002 AM31 was discovered by LINEAR in New Mexico on January 14, 2002. 2002 AM31 will flyby Earth at a distance of 0.035 AU (14 lunar distances) on July 22, 2012. It will be a strong radar target at Goldstone and we expect to use the chirp system at resolutions as fine as 0.1 usec (10 meters). Nine tracks are scheduled at Goldstone and four are scheduled at Arecibo, where this object will be a very strong imaging target with SNRs sufficient for imaging at 0.05 usec (7.5 meter) resolution. Recently Michael Hicks et al. reported (pers. comm.) that 2002 AM31 is a basaltic, V-class object. If we adopt an optical albedo of 0.4 typical of that spectral class, then the absolute magnitude of 18.2 suggests that the diameter will be roughly 0.5 km. Ellen Howell (Arecibo Observatory) has reported that 2002 AM31 is an Sq-class object. Arecibo imaging on July 11 and 12 revealed that this object is about 0.3 km in diameter and that it has an unusually high radar albedo of about 0.4. Information about the rotation period is starting to become available: evidently the period is close to 3.4 hours (Brian Warner, pers. comm.) and the lightcurve amplitude is low (Joe Pollock and Petr Pravec, pers. comm.), suggesting that the shape has a low elongation. 2002 AM31 will brighten to about 14th magnitude in the third week of June when it will be a good target for photometry and spectroscopy. 2002 AM31 has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center. This is the next opportunity to observe 2002 AM31 with radar until July of 2032 when the asteroid will approach within a similar distance from Earth.
Orbital and Physical Characteristics
orbit type Apollo
semimajor axis 1.705 AU
eccentricity 0.452
inclination 4.6 deg
perihelion distance 0.935 AU
aphelion distance 2.475 AU
absolute magnitude (H) 18.2
diameter 0.34 km Based on Arecibo results from July 12
rotation period ~3.4 h (B. Warner, pers. comm.)
pole direction unknown
lightcurve amplitude low (J. Pollock and P. Pravec, pers. comm.)
spectral class V (M. D. Hicks, pers. comm.)
Sq (E. S. Howell, pers. comm.)
Last update: 2012 July 30
M.P.E.C. 2002-A102 Issued 2002 Jan. 15, 22:23 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
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2002 AM31
Observations:
K02A31M* C2002 01 14.30236 07 45 08.49 +16 29 37.1 19.8 704
K02A31M C2002 01 14.31745 07 45 06.83 +16 29 45.1 20.0 704
K02A31M C2002 01 14.33255 07 45 05.19 +16 29 51.2 19.9 704
K02A31M C2002 01 14.34799 07 45 03.59 +16 29 57.8 19.6 704
K02A31M C2002 01 15.23447 07 43 32.13 +16 36 47.2 19.8 704
K02A31M C2002 01 15.24987 07 43 30.45 +16 36 53.1 19.6 704
K02A31M C2002 01 15.26505 07 43 28.81 +16 37 00.9 19.8 704
K02A31M C2002 01 15.26929 07 43 28.26 +16 37 02.0 19.4 R 649
K02A31M C2002 01 15.28023 07 43 27.19 +16 37 07.9 19.9 704
K02A31M C2002 01 15.28380 07 43 26.68 +16 37 08.6 19.4 R 649
K02A31M C2002 01 15.28826 07 43 26.25 +16 37 10.7 19.4 R 649
K02A31M C2002 01 15.31735 07 43 23.22 +16 37 25.2 20.3 R 711
K02A31M C2002 01 15.32597 07 43 22.27 +16 37 29.0 19.6 R 711
K02A31M C2002 01 15.33460 07 43 21.42 +16 37 33.0 19.9 R 711
K02A31M C2002 01 15.85198 07 42 28.60 +16 41 27.3 19.1 R 046
K02A31M C2002 01 15.85347 07 42 28.48 +16 41 27.8 046
K02A31M C2002 01 15.85493 07 42 28.27 +16 41 29.4 046
K02A31M C2002 01 15.85808 07 42 27.97 +16 41 29.9 18.9 R 046
Observer details:
046 Klet. Observer M. Tichy. 0.57-m f/5.2 reflector + CCD.
649 Powell Observatory, Louisburg. Observers K. Smalley, R. Fredrick,
R. Trentman. 0.75-m Newtonian + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, S. Adams, J. Piscitelli. Measurers
J. Stuart, R. Sayer, J. B. Evans, H. Viggh. 1.0-m f/2.15 reflector + CCD.
711 McDonald Observatory. Observers P. J. Shelus, J. G. Ries. 0.76-m
reflector + CCD.
Orbital elements:
2002 AM31 PHA 0.015D
Epoch 2002 Jan. 6.0 TT = JDT 2452280.5 MPC
M 82.68275 (2000.0) P Q
n 0.46093935 Peri. 197.96210 +0.96742724 +0.25026938
a 1.6597405 Node 147.46845 -0.22270879 +0.91292380
e 0.3966524 Incl. 4.06017 -0.12035503 +0.32239008
P 2.14 H 18.6 G 0.15
From 18 observations 2002 Jan. 14-15.
Ephemeris:
2002 AM31 a,e,i = 1.66, 0.40, 4 q = 1.0014
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2002 01 06 07 59.73 +15 25.4 0.857 1.826 165.7 7.7 20.1
2002 01 16 07 42.22 +16 42.7 0.890 1.872 175.3 2.5 20.0
2002 01 26 07 26.43 +17 54.9 0.949 1.915 164.2 8.0 20.5
2002 02 05 07 14.34 +18 56.0 1.033 1.957 151.4 14.0 20.9
2002 02 15 07 06.83 +19 44.5 1.138 1.996 139.5 18.7 21.3
2002 02 25 07 03.99 +20 21.0 1.260 2.032 128.8 22.3 21.7
2002 03 07 07 05.28 +20 46.7 1.395 2.067 119.0 24.8 22.0
Timothy B. Spahr (C) Copyright 2002 MPC M.P.E.C. 2002-A102
2002AM31: D = 0.34 km, P = 3.4000 hr, OC albedo = 0.400 (using results obtained at Arecibo on July 12) start date window RA, dec dist runs SNR/date SNR/run 2012 Jul 13 01:53-12:01 278, +25 0.064 278 161 10 2012 Jul 14 01:45-12:08 279, +28 0.059 305 217 13 2012 Jul 15 01:38-12:18 280, +31 0.055 337 296 17 2012 Jul 16 01:30-12:30 282, +35 0.051 374 407 23 2012 Jul 17 01:23-12:46 284, +40 0.047 418 566 30 2012 Jul 18 01:15-13:08 286, +45 0.044 468 785 39 2012 Jul 19 01:08-13:38 290, +51 0.040 525 1071 50 2012 Jul 20 01:03-14:24 295, +57 0.038 591 1416 62 2012 Jul 21 01:02-15:39 304, +64 0.036 668 1768 73 2012 Jul 22 01:11-17:53 321, +71 0.035 761 2043 80 2012 Jul 23 01:53-20:45 352, +75 0.035 844 2128 80 2012 Jul 24 04:05-22:03 27, +74 0.036 790 1890 73 2012 Jul 25 06:42-22:23 49, +68 0.038 679 1508 62 2012 Jul 26 08:15-22:27 60, +63 0.040 590 1141 50 2012 Jul 27 09:09-22:25 67, +57 0.044 519 835 39 2012 Jul 28 09:43-22:21 71, +52 0.047 461 601 30 2012 Jul 29 10:06-22:15 74, +48 0.051 412 431 23 2012 Jul 30 10:23-22:10 76, +44 0.055 371 310 17 2012 Jul 31 10:36-22:04 78, +41 0.059 336 226 13 2012 Aug 01 10:45-21:58 79, +38 0.064 306 166 10 Horizons were set = 25 degrees (instead of the usual value of 20 deg) because otherwise this object is circumpolar on some dates, precluding estimation of the SNRs by our software. Goldstone SNRs assume Ptx = 450 kW
Goldstone tracks:
UT UT PDT Duration Round-trip
DOY Date TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- -------
197 Jul 15 0300-1010 2000-0310 Jul 14/15 7:10 55 17
199 Jul 17 0615-1235 2315-0535 Jul 16/17 6:20 47 30
200 Jul 18 0815-1055 0115-0355 Jul 18 2:40 43 39
201 Jul 19 0610-1010 2310-0310 Jul 18/19 4:00 40 50
202 Jul 20 1340-1510 0640-0810 Jul 20 1:30 38 62 Overlaps with 2004 EW9
203 Jul 21 0605-1505 2305-0805 Jul 20/21 9:00 36 73 Overlaps with 2004 EW9. Radiation clearance ends at 1645.
205 Jul 23 0445-1045 2145-0345 Jul 22/23 6:00 35 80
209 Jul 27 0740-1330 0040-0630 Jul 27 5:50 43 39
210 Jul 28 1050-1510 0350-0810 Jul 28 4:20 46 30
211 Jul 29 1050-2000 0350-1300 Jul 29 9:10 51 23 This track may shorten due to a request from Stereo B.
*********************************************************************************************************
Note added on July 11:
We also added two other asteroids, 2006 CF and 2012 OQ, during some of our 2002 AM31 time on July 27, 28, and 29.
Here are the times when they overlap:
2002 AM31 and 2006 2002 AM31 and 2012 OQ
209 Jul 27 1005 1330 0905-1330
210 Jul 28 1050 1510 1050-1510
211 Jul 29 1110 1910
*********************************************************************************************************
NOTE: TXon is shown at the earliest time we can transmit, which may be only 30 min into the precal time.
The 2002 AM31 Goldstone tracks are interleaved among tracks scheduled for 2004 EW9. The graph below indicates
schedules for each object:
* = 2002 AM31
# = 2004 EW9
% = 2006 CJ
$ = 2012 OQ
UTC 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 July
HHMM 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 DOY PDT
0300 * 2000
15 * 15
30 * 30
45 * 45
0400 * 2100
15 * 15
30 * 30
45 * * 45
0500 * * 2200
15 * * 15
30 * * 30
45 * * 45
0600 * * * 2300
15 * * * * * 15
30 * * * * * 30
45 * * * * * 45
0700 * * * * * 0000 midnight PDT
15 * * * * * 15
30 * * * * * 30
45 * * * * * * 45
0800 * * * * * * 0100
15 * * * * * * * 15
30 * * * * * * * 30
45 * * * * * * * 45
0900 * * * * * * * 0200
15 * * * * * * *$ 15
30 * * * * * * *$ 30
45 * * * * * * *$ 45
1000 * * * * * * *$ 0300
15 * * * * * * %*$ 15
30 * * * * %*$ 30
45 * * * * %*$ %*$ * 45
1100 * * * %*$ %*$ * 0400
15 * * %*$ %*$ %* 15
30 * * %*$ %*$ %* 30
45 * * %*$ %*$ %* 45
1200 * * %*$ %*$ %* 0500
15 * * %*$ %*$ %* 15
30 * * %*$ %*$ %* 30
45 * %*$ %*$ %* 45
1300 * %*$ %*$ %* 0600
15 *# %*$ %*$ %* 15
30 *# %*$ %*$ %* 30
45 *# *# %*$ %* 45
1400 *# *# %*$ %* 0700
15 *# *# %*$ %* 15
30 *# *# %*$ %* 30
45 *# *# %*$ %* 45
1500 *# *# %*$ %* 0800
15 *# *# %*$ %* 15
30 # # %* 30
45 # # %* 45
1600 # # %* 0900
15 # # %* 15
30 # # %* 30
45 # # %* 45
1700 # # %* 1000
15 # # %* 15
30 # # %* 30
45 # # %* 45
1800 # # %* 1100
15 # # %* 15
30 # # %* 30
45 # # %* 45
1900 # # %* 1200
15 # # %* 15
30 # # * 30
45 # # * 45
2000 # # * 1300
15 # # 15
30 # 30
45 # 45
UTC 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Jul
HHMM 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 DOY
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Scheduled Arecibo tracks:
Assumes P = 2.8 h, D = 0.34 km, radar albedo = 0.4, Ptx = 900 kW
UT UT AST PDT Duration Round-trip
DOY Date TX Window TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- ---------- -------
194 Jul 12 0214-0458 2214-0058 Jul 11-12 1914-2158 Jul 11 2:44 69 140
195 Jul 13 0215-0455 2215-0055 Jul 12-13 1915-2155 Jul 12 2:40 64 170
196 Jul 14 ...no track...
197 Jul 15 0227-0442 2227-0042 Jul 14-14 1927-2142 Jul 14 2:15 56 290
198 Jul 16 0246-0426 2246-0026 Jul 15-16 1946-2126 Jul 15 1:40 51 340
215 Aug 02 1224-1343 0824-0943 Aug 02 0524-0643 Aug 02 1:19 68 110
216 Aug 03 1209-1358 0809-0958 Aug 03 0509-0658 Aug 03 1:49 73 110
220 Aug 07 1143-1415 0743-1015 Aug 07 0443-0715 Aug 07 2:32 93 50
After July 16 this object moves too far north for Arecibo to track until it moves south into
Arecibo's declination window on August 2. At that time 2002 AM31 will still be a strong radar imaging
target at Arecibo, and three tracks have been added to the schedule.
Sky motion during July 12-29, dates that encompass all the tracks at Goldstone and Arecibo,
will be about 98 degrees, so there could be substantial movement in subradar latitude and we may
see significant changes in the bandwidth throughout the observations.
From Jon Giorgini, 2012 July 30: Including the last delay measurement from DSS-14 (Jul 27) with recent optical (425 measurements 2001-Dec-16 to 2012-Jul-29), 153958 (2002 AM31) orbit solution #65 was estimated and updated into the Arecibo /a153958 sub-directory for the upcoming tracks. Formal 3-sigma S-band uncertainties for .s65: Date__(UT)__HR:MN POS_3sigma DOP_S_3sig RT_delay_3sig 2012-Aug-02 00:00 0.293 0.04 0.000013 2012-Aug-03 00:00 0.281 0.04 0.000014 2012-Aug-04 00:00 0.271 0.04 0.000016 2012-Aug-05 00:00 0.262 0.04 0.000017 2012-Aug-06 00:00 0.255 0.04 0.000018 2012-Aug-07 00:00 0.248 0.04 0.000020 2012-Aug-08 00:00 0.242 0.04 0.000021 - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, 2012 July 23: With the additional DSS-14 delay measurement Marina included to produce 2002 AM31 orbit solution s61, formal 3-sigma X-band uncertainties are now: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Jul-26 00:00 0.697 0.44 0.000011 2012-Jul-27 00:00 0.659 0.44 0.000015 2012-Jul-28 00:00 0.619 0.43 0.000019 2012-Jul-29 00:00 0.580 0.41 0.000023 2012-Jul-30 00:00 0.544 0.40 0.000027 - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, 2012 July 17: The set-up on aardvark has been updated to s59. Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Jul-18 00:00 1.221 0.12 0.43 0.000007 2012-Jul-19 00:00 1.313 0.17 0.61 0.000011 2012-Jul-20 00:00 1.402 0.22 0.82 0.000017 2012-Jul-21 00:00 1.478 0.28 1.02 0.000026 2012-Jul-22 00:00 1.528 0.33 1.20 0.000036 2012-Jul-23 00:00 1.543 0.36 1.30 0.000047 2012-Jul-24 00:00 1.520 0.36 1.32 0.000060 2012-Jul-25 00:00 1.462 0.35 1.27 0.000072 From Jon Giorgini, 2012 July 3: Given the existing 255 optical measurements (1983-May-7 to 2012-Jun-30), 153958 (2002 AM31) orbit solution #51 was estimated and OSOD with nominal radar predicts for DSS-14 and Areicbo established in the /a153958 sub-directories. Formal 3-sigma S/X-band uncertainties: Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Jul-11 00:00 1.581 0.52 1.89 0.000793 2012-Jul-12 00:00 1.762 0.60 2.18 0.000790 2012-Jul-13 00:00 1.976 0.71 2.57 0.000786 2012-Jul-14 00:00 2.230 0.86 3.11 0.000777 2012-Jul-15 00:00 2.534 1.05 3.83 0.000764 2012-Jul-16 00:00 2.897 1.32 4.78 0.000745 2012-Jul-17 00:00 3.325 1.66 6.03 0.000719 2012-Jul-18 00:00 3.821 2.09 7.61 0.000685 2012-Jul-19 00:00 4.374 2.62 9.54 0.000640 2012-Jul-20 00:00 4.952 3.22 11.71 0.000588 2012-Jul-21 00:00 5.493 3.82 13.88 0.000535 2012-Jul-22 00:00 5.909 4.30 15.64 0.000492 2012-Jul-23 00:00 6.114 4.56 16.56 0.000479 2012-Jul-24 00:00 6.066 4.52 16.41 0.000505 2012-Jul-25 00:00 5.790 4.21 15.31 0.000562 2012-Jul-26 00:00 5.359 3.75 13.63 0.000635 2012-Jul-27 00:00 4.858 3.24 11.77 0.000710 2012-Jul-28 00:00 4.355 2.75 10.00 0.000780 2012-Jul-29 00:00 3.888 2.33 8.47 0.000842 2012-Jul-30 00:00 3.475 1.98 7.20 0.000896 2012-Jul-31 00:00 3.118 1.70 6.17 0.000943 2012-Aug-01 00:00 2.814 1.47 5.35 0.000985 Some evidence of ~0.2" systematic offset within the declination data, but the uncertainties above should encompass it. - - - - - - - - - - - - - - - - - - Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illuminations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta S-O-T /r T-O-M/Illu% 2012-Jun-19 00:00 272.91562 0.02910 16.08 0.20173125805849 156.0197 /L 155.0/ 0.4 2012-Jun-20 00:00 272.96835 0.48266 16.01 0.19519893541973 155.7431 /L 158.6/ 0.2 2012-Jun-21 00:00 273.02246 0.95357 15.93 0.18874851132894 155.4131 /L 156.1/ 1.9 2012-Jun-22 00:00 273.07877 1.44337 15.86 0.18237825254068 155.0296 /L 148.7/ 5.6 2012-Jun-23 00:00 273.13816 1.95381 15.79 0.17608637571619 154.5927 /L 139.0/ 11.2 2012-Jun-24 00:00 273.20161 2.48690 15.72 0.16987106044203 154.1024 /L 128.1/ 18.5 2012-Jun-25 00:00 273.27021 3.04493 15.64 0.16373046758434 153.5590 /T 116.5/ 27.4 2012-Jun-26 00:00 273.34514 3.63052 15.57 0.15766276389462 152.9625 /T 104.5/ 37.5 2012-Jun-27 00:00 273.42773 4.24670 15.49 0.15166615407685 152.3127 /T 92.3/ 48.5 2012-Jun-28 00:00 273.51940 4.89697 15.42 0.14573892202175 151.6093 /T 79.9/ 59.7 2012-Jun-29 00:00 273.62176 5.58535 15.34 0.13987948336130 150.8514 /T 67.5/ 70.7 2012-Jun-30 00:00 273.73657 6.31654 15.26 0.13408645144312 150.0379 /T 55.4/ 80.8 2012-Jul-01 00:00 273.86581 7.09599 15.18 0.12835865189083 149.1669 /T 44.3/ 89.2 2012-Jul-02 00:00 274.01171 7.93006 15.10 0.12269548108256 148.2359 /T 35.2/ 95.5 2012-Jul-03 00:00 274.17683 8.82619 15.02 0.11709661308161 147.2413 /T 30.2/ 99.1 2012-Jul-04 00:00 274.36417 9.79316 14.93 0.11156237776099 146.1786 /T 31.2/ 99.8 2012-Jul-05 00:00 274.57728 10.84132 14.85 0.10609381435486 145.0419 /T 37.4/ 97.9 2012-Jul-06 00:00 274.82048 11.98299 14.76 0.10069280722887 143.8235 /T 46.3/ 93.4 2012-Jul-07 00:00 275.09903 13.23290 14.67 0.09536225283740 142.5137 /T 56.3/ 87.0 2012-Jul-08 00:00 275.41954 14.60874 14.58 0.09010627999048 141.1002 /T 66.4/ 79.0 2012-Jul-09 00:00 275.79031 16.13193 14.48 0.08493054996248 139.5676 /T 76.3/ 70.1 2012-Jul-10 00:00 276.22199 17.82843 14.38 0.07984266724442 137.8962 /T 85.6/ 60.5 2012-Jul-11 00:00 276.72846 19.72990 14.29 0.07485273844025 136.0612 /T 94.3/ 50.9 2012-Jul-12 00:00 277.32812 21.87495 14.19 0.06997412742913 134.0315 /T 102.1/ 41.3 2012-Jul-13 00:00 278.04598 24.31062 14.09 0.06522446902646 131.7676 /T 108.9/ 32.1 2012-Jul-14 00:00 278.91684 27.09382 13.99 0.06062701758568 129.2206 /T 114.2/ 23.7 2012-Jul-15 00:00 279.99063 30.29235 13.90 0.05621241187873 126.3302 /T 117.9/ 16.1 2012-Jul-16 00:00 281.34157 33.98456 13.82 0.05202091060579 123.0236 /T 119.5/ 9.7 2012-Jul-17 00:00 283.08468 38.25552 13.75 0.04810504518345 119.2177 /T 119.2/ 4.8 2012-Jul-18 00:00 285.40746 43.18598 13.71 0.04453235627951 114.8246 /T 117.0/ 1.5 2012-Jul-19 00:00 288.63488 48.82702 13.70 0.04138729536294 109.7676 /T 113.5/ 0.2 2012-Jul-20 00:00 293.37313 55.14851 13.73 0.03877040815354 104.0092 /T 109.6/ 0.9 2012-Jul-21 00:00 300.84908 61.93915 13.83 0.03679190257392 97.5940 /L 106.3/ 3.8 2012-Jul-22 00:00 313.68997 68.60229 14.01 0.03555694353643 90.6908 /L 104.6/ 8.8 2012-Jul-23 00:00 336.67427 73.72098 14.27 0.03514359722072 83.6061 /L 105.5/ 15.8 2012-Jul-24 00:00 9.83084 74.90714 14.62 0.03558121159669 76.7354 /L 109.2/ 24.6 2012-Jul-25 00:00 37.51688 71.63497 15.02 0.03684115510015 70.4612 /L 115.6/ 34.8 2012-Jul-26 00:00 53.55068 66.29541 15.45 0.03884596119312 65.0525 /L 124.0/ 45.9 2012-Jul-27 00:00 62.65505 60.65300 15.88 0.04149083262352 60.6227 /L 133.6/ 57.3 2012-Jul-28 00:00 68.27587 55.38402 n.a. 0.04466560124386 57.1516 /L 143.0/ 68.4 2012-Jul-29 00:00 72.04134 50.68968 n.a. 0.04826937403268 54.5360 /L 150.6/ 78.7 2012-Jul-30 00:00 74.73349 46.58875 n.a. 0.05221694287486 52.6388 /L 153.5/ 87.3 2012-Jul-31 00:00 76.75900 43.03248 n.a. 0.05643960503276 51.3213 /L 149.7/ 94.0 2012-Aug-01 00:00 78.34636 39.95191 n.a. 0.06088328201016 50.4599 /L 141.1/ 98.2 2012-Aug-02 00:00 79.63260 37.27742 n.a. 0.06550581480512 49.9519 /L 130.2/ 99.8 2012-Aug-03 00:00 80.70443 34.94622 n.a. 0.07027435112062 49.7152 /L 118.3/ 98.9 2012-Aug-04 00:00 81.61917 32.90437 n.a. 0.07516315407734 49.6861 /L 106.2/ 95.7 2012-Aug-05 00:00 82.41612 31.10664 n.a. 0.08015188057082 49.8156 /L 94.1/ 90.5 2012-Aug-06 00:00 83.12308 29.51555 n.a. 0.08522426978669 50.0663 /L 82.2/ 83.7 2012-Aug-07 00:00 83.76017 28.10013 n.a. 0.09036715679053 50.4097 /L 70.4/ 75.7 2012-Aug-08 00:00 84.34235 26.83479 n.a. 0.09556973280237 50.8242 /L 58.8/ 66.9 2012-Aug-09 00:00 84.88091 25.69836 n.a. 0.10082298951732 51.2934 /L 47.3/ 57.6 2012-Aug-10 00:00 85.38454 24.67325 n.a. 0.10611930036727 51.8044 /L 35.9/ 48.1 2012-Aug-11 00:00 85.85999 23.74477 n.a. 0.11145210415813 52.3476 /L 24.5/ 38.8 2012-Aug-12 00:00 86.31260 22.90057 n.a. 0.11681566586618 52.9154 /L 13.1/ 29.7 2012-Aug-13 00:00 86.74662 22.13028 n.a. 0.12220489610128 53.5020 /L 1.631/ 21.4 2012-Aug-14 00:00 87.16546 21.42505 18.37 0.12761521546245 54.1028 /L 10.4/ 14.0 2012-Aug-15 00:00 87.57188 20.77739 18.38 0.13304245319386 54.7142 /L 22.5/ 7.8
CW setup:
---------------------------------------------------------------------------
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: 2
Dwells: 20
Bandwidth: 4000 Hz
Sampling interval: 2500 x 0.1 usec
VME FFT for PSD files: 4096 for 0.98 Hz resolution
imaging:
---------------------------------------------------------------------------
baud 0.5 usec
code 127
FFT 256 (PFS=512)
ncoh 62
bandwidth 253 Hz
resolution 1.0 Hz (PFS=0.5 Hz)
TXOFF +30 Hz -> echo would be centered at 128 + 30 = 158
--------------------------------------------------------------------------
_____________________________________________________________________
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
____________________________________________________________________
OSOD and predicts are on aardvark:
/export/data3/osod/ops/a153958/PRDX.OUT.14v-14-14.s63
/PUNCH.OUT.14v-14-14.s63
/EPH.OUT.s63
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2012 07 28 210 100000 70.3370 53.3562 A 46.0 s63
2012 07 28 210 110000 70.4929 53.1677 A 46.2
2012 07 28 210 120000 70.6418 52.9796 A 46.3
2012 07 28 210 130000 70.7844 52.7913 A -1.80 -2.40 46.4
2012 07 28 210 140000 70.9214 52.6024 A 46.6
2012 07 28 210 150000 71.0540 52.4126 A 46.7
2012 07 28 210 160000 71.1832 52.2217 A 46.9
2012 07 29 211 100000 73.5648 48.9074 A 49.8 s63
2012 07 29 211 110000 73.6765 48.7427 A 49.9
2012 07 29 211 120000 73.7827 48.5786 A -1.50 -2.30 50.1
2012 07 29 211 130000 73.8840 48.4145 A 50.2
2012 07 29 211 140000 73.9811 48.2500 AB 50.4
2012 07 29 211 150000 74.0747 48.0848 B 50.6
2012 07 29 211 160000 74.1659 47.9186 B 50.7
2012 07 29 211 170000 74.2558 47.7515 B -1.20 -2.40 50.9
2012 07 29 211 180000 74.3454 47.5834 B 51.1
2012 07 29 211 190000 74.4356 47.4147 B 51.2
2012 07 29 211 200000 74.5273 47.2455 B 51.4
Transmit offsets are given in millidegrees.
____________________________________________________________________
PRDX.OUT.14f-14-14.s63
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2012 JUL 28 10:00 46.0123838566 -340862.594 269.2506 53.3562 70.337 27.305
2012 JUL 28 10:10 46.0362847801 -341114.322 271.7310 53.3247 70.363 28.659
2012 JUL 28 10:20 46.0602041783 -341389.698 274.2115 53.2932 70.390 30.032
2012 JUL 28 10:30 46.0841437031 -341688.749 276.6923 53.2618 70.416 31.421
2012 JUL 28 10:40 46.1081050206 -342011.458 279.1732 53.2304 70.442 32.826
2012 JUL 28 10:50 46.1320897872 -342357.759 281.6544 53.1990 70.467 34.246
2012 JUL 28 11:00 46.1560996532 -342727.542 284.1357 53.1677 70.493 35.679
2012 JUL 28 11:10 46.1801362526 -343120.653 286.6173 53.1363 70.518 37.125
2012 JUL 28 11:20 46.2042012208 -343536.892 289.0990 53.1049 70.543 38.582
2012 JUL 28 11:30 46.2282961638 -343976.013 291.5809 53.0736 70.568 40.049
2012 JUL 28 11:40 46.2524226826 -344437.727 294.0631 53.0422 70.593 41.525
2012 JUL 28 11:50 46.2765823496 -344921.700 296.5454 53.0109 70.617 43.008
2012 JUL 28 12:00 46.3007767052 -345427.555 299.0279 52.9796 70.642 44.497
2012 JUL 28 12:10 46.3250072758 -345954.872 301.5105 52.9482 70.666 45.991
2012 JUL 28 12:20 46.3492755431 -346503.190 303.9934 52.9168 70.690 47.488
2012 JUL 28 12:30 46.3735829687 -347072.005 306.4764 52.8855 70.714 48.985
2012 JUL 28 12:40 46.3979309637 -347660.774 308.9595 52.8541 70.738 50.482
2012 JUL 28 12:50 46.4223209135 -348268.913 311.4429 52.8227 70.761 51.977
2012 JUL 28 13:00 46.4467541509 -348895.800 313.9264 52.7913 70.784 53.466
2012 JUL 28 13:10 46.4712319639 -349540.777 316.4100 52.7599 70.808 54.948
2012 JUL 28 13:20 46.4957555998 -350203.148 318.8938 52.7284 70.831 56.419
2012 JUL 28 13:30 46.5203262561 -350882.184 321.3778 52.6970 70.854 57.876
2012 JUL 28 13:40 46.5449450674 -351577.121 323.8619 52.6655 70.876 59.316
2012 JUL 28 13:50 46.5696131207 -352287.163 326.3461 52.6340 70.899 60.733
2012 JUL 28 14:00 46.5943314530 -353011.484 328.8304 52.6024 70.921 62.123
2012 JUL 28 14:10 46.6191010284 -353749.228 331.3149 52.5709 70.944 63.480
2012 JUL 28 14:20 46.6439227571 -354499.511 333.7995 52.5393 70.966 64.797
2012 JUL 28 14:30 46.6687974934 -355261.425 336.2842 52.5077 70.988 66.064
2012 JUL 28 14:40 46.6937260129 -356034.036 338.7690 52.4760 71.010 67.274
2012 JUL 28 14:50 46.7187090391 -356816.387 341.2539 52.4444 71.032 68.413
2012 JUL 28 15:00 46.7437472068 -357607.503 343.7390 52.4126 71.054 69.470
2012 JUL 28 15:10 46.7688411094 -358406.385 346.2241 52.3809 71.076 70.429
2012 JUL 28 15:20 46.7939912560 -359212.023 348.7093 52.3491 71.097 71.274
2012 JUL 28 15:30 46.8191980704 -360023.387 351.1945 52.3173 71.119 71.987
2012 JUL 28 15:40 46.8444619312 -360839.436 353.6799 52.2855 71.140 72.552
2012 JUL 28 15:50 46.8697831302 -361659.118 356.1653 52.2536 71.162 72.953
2012 JUL 28 16:00 46.8951618709 -362481.369 358.6507 52.2217 71.183 73.177
2012 JUL 29 10:00 49.7638134719 -374108.084 267.0084 48.9074 73.565 24.136
2012 JUL 29 10:10 49.7900420856 -374286.049 269.4963 48.8799 73.584 25.592
2012 JUL 29 10:20 49.8162840977 -374490.365 271.9843 48.8524 73.603 27.068
2012 JUL 29 10:30 49.8425413504 -374721.083 274.4724 48.8250 73.621 28.564
2012 JUL 29 10:40 49.8688157091 -374978.207 276.9608 48.7975 73.640 30.078
2012 JUL 29 10:50 49.8951090093 -375261.686 279.4492 48.7701 73.658 31.608
2012 JUL 29 11:00 49.9214231022 -375571.423 281.9379 48.7427 73.676 33.155
2012 JUL 29 11:10 49.9477598165 -375907.265 284.4266 48.7154 73.695 34.717
2012 JUL 29 11:20 49.9741209897 -376269.014 286.9155 48.6880 73.712 36.293
2012 JUL 29 11:30 50.0005084151 -376656.418 289.4046 48.6606 73.730 37.881
2012 JUL 29 11:40 50.0269238808 -377069.177 291.8938 48.6333 73.748 39.482
2012 JUL 29 11:50 50.0533691666 -377506.942 294.3832 48.6060 73.765 41.093
2012 JUL 29 12:00 50.0798459903 -377969.316 296.8727 48.5786 73.783 42.714
2012 JUL 29 12:10 50.1063560831 -378455.853 299.3623 48.5513 73.800 44.344
2012 JUL 29 12:20 50.1329011074 -378966.059 301.8521 48.5239 73.817 45.980
2012 JUL 29 12:30 50.1594827040 -379499.397 304.3420 48.4966 73.834 47.623
2012 JUL 29 12:40 50.1861024883 -380055.281 306.8320 48.4692 73.851 49.271
2012 JUL 29 12:50 50.2127619976 -380633.084 309.3222 48.4419 73.867 50.922
2012 JUL 29 13:00 50.2394627595 -381232.134 311.8124 48.4145 73.884 52.575
2012 JUL 29 13:10 50.2662062386 -381851.717 314.3028 48.3871 73.900 54.227
2012 JUL 29 13:20 50.2929938410 -382491.081 316.7933 48.3597 73.917 55.877
2012 JUL 29 13:30 50.3198269256 -383149.431 319.2840 48.3323 73.933 57.523
2012 JUL 29 13:40 50.3467068017 -383825.938 321.7747 48.3049 73.949 59.163
2012 JUL 29 13:50 50.3736347047 -384519.733 324.2655 48.2774 73.965 60.792
2012 JUL 29 14:00 50.4006118224 -385229.917 326.7565 48.2500 73.981 62.407
2012 JUL 29 14:10 50.4276392638 -385955.555 329.2475 48.2225 73.997 64.004
2012 JUL 29 14:20 50.4547180785 -386695.681 331.7386 48.1950 74.013 65.577
2012 JUL 29 14:30 50.4818492547 -387449.300 334.2298 48.1675 74.028 67.120
2012 JUL 29 14:40 50.5090336954 -388215.390 336.7211 48.1399 74.044 68.625
2012 JUL 29 14:50 50.5362722381 -388992.903 339.2125 48.1124 74.059 70.080
2012 JUL 29 15:00 50.5635656534 -389780.768 341.7039 48.0848 74.075 71.473
2012 JUL 29 15:10 50.5909146217 -390577.892 344.1954 48.0571 74.090 72.786
2012 JUL 29 15:20 50.6183197566 -391383.161 346.6870 48.0295 74.105 73.999
2012 JUL 29 15:30 50.6457815860 -392195.447 349.1786 48.0018 74.121 75.086
2012 JUL 29 15:40 50.6733005653 -393013.603 351.6702 47.9741 74.136 76.015
2012 JUL 29 15:50 50.7008770619 -393836.472 354.1620 47.9464 74.151 76.752
2012 JUL 29 16:00 50.7285113725 -394662.883 356.6537 47.9186 74.166 77.263
2012 JUL 29 16:10 50.7562036896 -395491.659 359.1455 47.8908 74.181 77.519
2012 JUL 29 16:20 50.7839541519 -396321.615 1.6374 47.8630 74.196 77.504
2012 JUL 29 16:30 50.8117628007 -397151.563 4.1292 47.8352 74.211 77.218
2012 JUL 29 16:40 50.8396295790 -397980.311 6.6211 47.8073 74.226 76.678
2012 JUL 29 16:50 50.8675543756 -398806.669 9.1130 47.7794 74.241 75.915
2012 JUL 29 17:00 50.8955369739 -399629.450 11.6049 47.7515 74.256 74.961
2012 JUL 29 17:10 50.9235770891 -400447.470 14.0968 47.7235 74.271 73.852
2012 JUL 29 17:20 50.9516743315 -401259.553 16.5888 47.6956 74.286 72.617
2012 JUL 29 17:30 50.9798282586 -402064.534 19.0807 47.6676 74.301 71.283
2012 JUL 29 17:40 51.0080383320 -402861.258 21.5726 47.6396 74.315 69.869
2012 JUL 29 17:50 51.0363039183 -403648.582 24.0645 47.6115 74.330 68.392
2012 JUL 29 18:00 51.0646243335 -404425.384 26.5564 47.5834 74.345 66.865
2012 JUL 29 18:10 51.0929988010 -405190.555 29.0483 47.5554 74.360 65.299
2012 JUL 29 18:20 51.1214264530 -405943.009 31.5402 47.5273 74.375 63.701
2012 JUL 29 18:30 51.1499063749 -406681.683 34.0320 47.4991 74.390 62.079
2012 JUL 29 18:40 51.1784375571 -407405.537 36.5238 47.4710 74.405 60.436
2012 JUL 29 18:50 51.2070189321 -408113.558 39.0156 47.4428 74.420 58.779
2012 JUL 29 19:00 51.2356493482 -408804.761 41.5073 47.4147 74.436 57.110
2012 JUL 29 19:10 51.2643276000 -409478.193 43.9990 47.3865 74.451 55.432
2012 JUL 29 19:20 51.2930524021 -410132.931 46.4906 47.3583 74.466 53.749
2012 JUL 29 19:30 51.3218224127 -410768.087 48.9822 47.3301 74.481 52.061
2012 JUL 29 19:40 51.3506362362 -411382.809 51.4738 47.3019 74.496 50.372
2012 JUL 29 19:50 51.3794924042 -411976.282 53.9653 47.2737 74.512 48.682
2012 JUL 29 20:00 51.4083894070 -412547.730 56.4567 47.2455 74.527 46.994
2002 AM31 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) 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/2002AM31/2002AM31_planning.html
Asteroid Radar Astronomy