38071 (1999 GU3) Planning
Near-Earth asteroid 38071 (1999 GU3) approaches within 0.082 AU of Earth on April 20, 2002. It will be a strong radar target. 1999 GU3 was discovered on April 10, 1999 by the MIT/Lincoln-Laboratory (LINEAR) search program. We observed it at Goldstone during the discovery apparition and the results were published in the December, 2000 issue of the journal Icarus. 1999 GU3 has been classified as a Potentially Hazardous Asteroid by the Minor Planet Center.
The 1999 echoes yielded a bandwidth of only 0.4 Hz but did not resolve the object in range. In 2002 we plan to image the asteroid at resolutions as high as 19 m per pixel at Goldstone and 7.5 m per pixel at Arecibo. Lightcurves obtained by Petr Pravec and colleagues at Ondrejov Observatory in the Czech Republic indicated that 1999 GU3 is a very slow rotator with a period of about 9 days. The very narrow bandwidth we obtained is consistent with that rotation period. The bandwidth and rotation period suggest that 1999 GU3 is close to 0.6 km in diameter and the substantial lightcurve amplitude also suggests that GU3 is elongated. The slow rotation period hints that 1999 GU3 may be a non-principal axis rotator (like Toutatis and 1999 JM8) and it indicates that rotational smear during a each track will probably be small.
This will be a multi-telescope campaign involving Goldstone DSS-14 (70 m), DSS-13 (34 m), Arecibo (305 m), and Greenbank (100 m). Monostatic observations are scheduled at Arecibo on April 7-12 and at Goldstone on April 27 and 28. Bistatic Arecibo->Greenbank observations are planned on April 13 and 14. Bistatic Goldstone->Greenbank observations are planned on April 21-23. On April 21-23 we will also receive echoes at DSS-13.
Update on 2002 April 16:
Arecibo observations yielded echoes on six days between April 8-15. The bandwidth is only about 0.06 Hz at S-band (0.22 Hz at X-band), which is about 1/2 of the bandwidth that we expected based on the Goldstone detection three years ago. The Arecibo images show a visible range extent that varied from about 240 meters to about 100 meters between the beginning and end of the Arecibo observations. Thus, 1999 GU3 is elongated, which is consistent with expectations from the amplitude of its lightcurve during the 1999 and 2002 apparitions. The asteroid is significantly smaller than the estimate above of ~600 meters, which probably accounts for signal-to-noise ratios that are lower than anticipated. The Arecibo echoes have a circular polarization ratio SC/OC ~ 0.4, which is indicative of a rough near-surface relative to those of other radar-detected near-Earth asteroids and a ratio that is consistent with the the one obtained at X-band in 1999.
Lightcurves obtained by Petr Pravec, Peter Kusnirak, and Lenka Sarounova at Ondrejov Observatory in the Czech Republic this spring have confirmed the 9 day rotation period they obtained from lightcurves three years ago.
A selection of Arecibo delay-Doppler images is available at: http://www.naic.edu/~radarusr/1999GU3pre/
We detected echoes using the bistatic Arecibo->Greenbank configuration. Bistatic delay-Doppler images are still being processed.
M.P.E.C. 1999-G22 Issued 1999 Apr. 12, 18:46 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. BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714 1999 GU3 Observations: J99G03U* C1999 04 10.23445 13 39 48.53 +24 39 34.7 15.2 704 J99G03U C1999 04 10.25365 13 40 31.06 +24 45 45.8 704 J99G03U C1999 04 10.27294 13 41 13.84 +24 51 58.1 704 J99G03U C1999 04 10.29202 13 41 56.21 +24 57 58.6 704 . . . Observer details: 046 Klet. Observers J. Ticha, M. Tichy. Measurer M. Tichy. 0.57-m f/5.2 reflector + CCD. 151 Eschenberg Observatory, Winterthur. Observer M. Griesser. 0.25-m f/8.0 reflector + CCD. 402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector + CCD. 422 Loomberah. Observer G. J. Garradd. 0.45-m f/5.4 reflector + CCD. 704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly, M. Bezpalko, M. Elowitz. Measurers J. Stuart, H. Viggh, R. Sayer. 1.0-m f/2.15 reflector + CCD. 713 Thornton. Observer R. A. Koff. 0.20-m f/10 Schmidt-Cassegrain + CCD. 719 Etscorn Observatory. Observer D. A. Klinglesmith III. 0.355-m Schmidt-Cassegrain + CCD. 732 Oaxaca. Observer J. Roe. 0.25-m f/3.4 reflector + CCD. 734 Farpoint Observatory. Observers G. Hug, G. Bell. 0.30-m Schmidt-Cassegrain + CCD. 739 Sunflower Observatory, Olathe. Observer L. Robinson. 0.25-m Schmidt-Cassegrain + CCD. 758 BCC Observatory, Cocoa. Observer I. P. Griffin. 0.30-m f/5 Maksutov + CCD. Orbital elements: 1999 GU3 PHA 0.030A Epoch 1999 Mar. 23.0 TT = JDT 2451260.5 Marsden M 352.82836 (2000.0) P Q n 0.32420763 Peri. 8.63580 -0.91187305 +0.40603526 a 2.0985560 Node 195.74004 -0.38861092 -0.90119212 e 0.5109189 Incl. 12.81960 -0.13217072 -0.15161838 P 3.04 H 19.1 G 0.15 From 78 observations 1999 Apr. 10-12. . . . Brian G. Marsden (C) Copyright 1999 MPC M.P.E.C. 1999-G22
Below are SNR estimates at Goldstone and Arecibo assuming P = 216 h, D = 0.64 km, a radar albedo of 0.1, and assuming nominal system parameters. Dates of scheduled observations are highlighted in bold. Goldstone->Greenbank SNRs/RTT should be about double those shown for monostatic Goldstone observations and about 10x those for bistatic DSS-14->DSS-13 observations. Arecibo->Greenbank SNRs/RTT should be about 1/3 of those shown for monostatic Arecibo observations. In the tables below, A = Arecibo, G = Goldstone, and GB = Greenbank. ------------GOLDSTONE---------- -------------ARECIBO----------- Max Max Dat Run UTC Dat Run UTC Date RA Decl Delta Runs SNR SNR Window Runs SNR SNR Window 2002 3 30 119 -3 0.138 94 26 3 23:06-31:30 0 0 0 - 2002 3 31 120 -1 0.134 98 29 3 23:00-31:30 8 238 87 23:41-24:11 2002 4 1 121 -0 0.130 102 34 4 22:53-31:36 13 383 116 23:23-24:23 2002 4 2 121 1 0.125 106 39 4 22:48-31:36 17 546 148 23:11-24:36 2002 4 3 122 3 0.121 110 44 5 22:41-31:41 21 737 185 23:00-24:41 2002 4 4 123 4 0.118 142 56 5 22:41-31:41 29 1042 215 22:53-24:48 2002 4 5 124 6 0.114 148 65 6 22:36-31:48 33 1276 242 22:48-24:53 2002 4 6 125 8 0.110 155 75 7 22:30-31:53 37 1532 271 22:41-25:00 2002 4 7 126 10 0.107 163 86 7 22:23-32:00 40 1809 304 22:36-25:06 MONOSTATIC A 2002 4 8 127 12 0.103 171 99 8 22:18-32:06 43 2115 341 22:36-25:11 MONOSTATIC A 2002 4 9 128 14 0.100 179 113 9 22:11-32:12 46 2452 381 22:36-25:11 MONOSTATIC A 2002 4 10 130 16 0.097 188 129 10 22:11-32:17 48 2805 424 22:30-25:18 MONOSTATIC A 2002 4 11 131 19 0.094 197 146 11 22:06-32:30 50 3176 471 22:36-25:18 MONOSTATIC A 2002 4 12 133 21 0.091 206 164 13 22:00-32:36 52 3552 519 22:36-25:23 MONOSTATIC A 2002 4 13 135 24 0.089 216 184 14 22:00-32:47 52 3883 569 22:41-25:23 BISTATIC A->GB 2002 4 14 137 27 0.087 226 203 15 21:53-33:00 51 4144 618 22:48-25:23 BISTATIC A->GB 2002 4 15 139 30 0.085 235 223 16 21:53-33:12 48 4260 665 23:00-25:23 2002 4 16 142 33 0.084 245 241 17 21:48-33:30 43 4102 707 23:18-25:18 2002 4 17 144 36 0.083 254 257 18 21:48-33:42 33 3231 627 23:41-25:11 2002 4 18 147 39 0.082 262 270 19 21:48-34:00 12 1555 457 - 2002 4 19 151 41 0.081 270 280 19 21:53-34:17 0 0 0 - 2002 4 20 155 44 0.081 278 285 19 21:53-34:36 0 0 0 - 2002 4 21 159 47 0.082 284 285 19 22:00-35:00 0 0 0 - BISTATIC G->GB 2002 4 22 163 49 0.082 289 280 18 22:00-35:23 0 0 0 - BISTATIC G->GB 2002 4 23 168 51 0.083 293 270 17 22:11-35:47 0 0 0 - BISTATIC G->GB 2002 4 24 174 53 0.085 295 256 16 22:18-36:12 0 0 0 - 2002 4 25 179 55 0.086 296 239 15 22:30-36:36 0 0 0 - 2002 4 26 185 56 0.088 295 220 14 22:41-37:00 0 0 0 - 2002 4 27 190 57 0.091 292 200 13 23:00-37:23 0 0 0 - MONOSTATIC G 2002 4 28 196 58 0.093 287 180 12 23:11-37:47 0 0 0 - MONOSTATIC G 2002 4 29 202 58 0.096 281 160 11 23:30-38:06 0 0 0 - 2002 4 30 207 58 0.099 273 142 10 23:48-38:23 0 0 0 -
UTC PDT AST/EDT UTC UTC TRANSMIT WINDOW TRANSMIT WINDOW TRANSMIT WINDOW 2002 April START STOP START STOP START STOP DOY Date hhmm-hhmm hhmm-hhmm hhmm-hhmm Duration 097-098 07-08 2232-0109 1532-1809 1832-2109 02:37 098-099 08-09 2231-0113 1531-1813 1831-2113 02:42 099-100 09-10 2230-0117 1530-1817 1830-2117 02:47 100-101 10-11 2231-0120 1531-1820 1831-2120 02:49 101-102 11-12 2234-0123 1534-1823 1834-2123 02:49 102-103 12-13 2239-0124 1539-1824 1839-2124 02:45 103-104 13-14 2247-0125 1547-1825 1847-2125 02:38 104-105 14-15 2259-0124 1559-1824 1859-2124 02:25 105-106 15-16 2315-0120 1615-1820 1915-2120 02:05 106-107 16-17 2339-0110 1639-1810 1939-2110 01:31 April 15 and 16 are backup dates in the event that a World Day postpones the observations on April 13 or 14.Goldstone Track Assignments
UTC PDT AST/EDT UTC UTC TRANSMIT WINDOW TRANSMIT WINDOW TRANSMIT WINDOW 2002 April START STOP START STOP START STOP DOY Date hhmm-hhmm hhmm-hhmm hhmm-hhmm Duration 111-112 21-22 2255-0820 1555-0120 1855-0420 09:25 112-113 22-23 2310-0900 1610-0200 1910-0500 09:50 113-114 23-24 2345-0935 1645-0235 1945-0535 09:50 117 27 0130-1130 1830-0430 2130-0730 10:00 118 28 0045-0605 1745-2305 2045-0205 05:20Greenbank Track Assignments
UTC PDT AST/EDT UTC UTC TRANSMIT WINDOW TRANSMIT WINDOW TRANSMIT WINDOW 2002 April START STOP START STOP START STOP Bistatic DOY Date hhmm-hhmm hhmm-hhmm hhmm-hhmm Duration Configuration 103-104 13-14 2247-0125 1547-1825 1847-2125 02:38 A->GB 104-105 14-15 2259-0124 1559-1824 1859-2124 02:25 A->GB 111-112 21-22 2255-0820 1555-0120 1855-0420 09:25 G->GB 112-113 22-23 2310-0900 1610-0200 1910-0500 09:50 G->GB 113-114 23-24 2345-0935 1645-0235 1945-0535 09:50 G->GBMASTER SCHEDULE
DOY 097 098 099 100 101 102 103 104 111 112 113 116 117 UTC AST/EDT PDT Apr 07 08 09 10 11 12 13 14 21 22 23 26 27 2200 18:00 15:00 Sun Mon Tue Wed Thu 15 eve eve eve eve eve Fri Sat 30 A A A A A eve eve Sun Sun 45 A A A A A A AGB eve aft Mon 2300 19:00 16:00 A A A A A A AGB AGB GGB aft 15 A A A A A A AGB AGB GGB GGB Tue 30 A A A A A A AGB AGB GGB GGB aft 45 A A A A A A AGB AGB GGB GGB GGB 0000 20:00 17:00 A A A A A A AGB AGB GGB GGB GGB 15 A A A A A A AGB AGB GGB GGB GGB Sat 30 A A A A A A AGB AGB GGB GGB GGB aft 45 A A A A A A AGB AGB GGB GGB GGB G 0100 21:00 18:00 A A A A A A AGB AGB GGB GGB GGB Fri G 15 A A A A A A AGB AGB GGB GGB GGB eve G 30 Sun Mon Tue Wed A A AGB AGB GGB GGB GGB G G 45 eve eve eve eve Thu Fri Sat Sun GGB GGB GGB G G 0200 22:00 19:00 eve eve eve eve GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0300 23:00 20:00 GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0400 00:00 21:00 GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0500 01:00 22:00 GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0600 02:00 23:00 GGB GGB GGB G G 15 GGB GGB GGB G Sat 30 GGB GGB GGB G pm 45 GGB GGB GGB G 0700 03:00 00:00 GGB GGB GGB G 15 GGB GGB GGB G 30 GGB GGB GGB G 45 GGB GGB GGB G 0800 04:00 01:00 GGB GGB GGB G 15 GGB GGB GGB G 30 Mon GGB GGB G 45 am GGB GGB G 0900 05:00 02:00 GGB GGB G 15 Tue GGB G 30 am GGB G 45 Wed G 1000 06:00 03:00 am G 15 G 30 G 45 G 1100 07:00 04:00 G 15 G 30 G 45 Sat 1200 08:00 05:00 am DOY 098 099 100 101 102 103 104 105 112 113 114 117 118 UTC AST/EDT PDT Apr 08 09 10 11 12 13 14 15 22 23 24 27 28
Sky Motion
Sky motion between 0 h UTC on April 8-28 is about 65 degrees.
Uncertainties
From Horizons (2002 March 19): Using 276 optical observations from April 11, 1999-March, 2002 and two Dopplers from April, 1999: ******************************************************************************************************* Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig ******************************************************************************************************* $$SOE 2002-Apr-07 00:00 * 125.74396 9.84933 0.1065645728 1.19479148 0.28 1.00 0.001850 2002-Apr-08 00:00 * 126.89513 11.89153 0.1031689242 1.26485638 0.28 1.00 0.001848 2002-Apr-09 00:00 * 128.15885 14.06064 0.0999398069 1.35943627 0.28 1.00 0.001842 2002-Apr-10 00:00 * 129.54813 16.35919 0.0968964366 1.48114531 0.28 1.00 0.001831 2002-Apr-11 00:00 *m 131.07781 18.78721 0.0940593245 1.63125056 0.28 1.00 0.001815 2002-Apr-12 00:00 *m 132.76480 21.34142 0.0914500409 1.80946244 0.28 1.00 0.001792 2002-Apr-13 00:00 *m 134.62827 24.01428 0.0890908475 2.01385377 0.28 1.01 0.001763 2002-Apr-14 00:00 *m 136.68979 26.79308 0.0870041788 2.24084930 0.29 1.02 0.001725 2002-Apr-15 00:00 *m 138.97337 29.65905 0.0852119714 2.48526564 0.29 1.03 0.001680 2002-Apr-16 00:00 *m 141.50529 32.58674 0.0837348538 2.74043300 0.29 1.05 0.001627 2002-Apr-17 00:00 *m 144.31359 35.54371 0.0825912402 2.99845473 0.30 1.06 0.001565 2002-Apr-18 00:00 *m 147.42705 38.49087 0.0817963997 3.25064705 0.30 1.08 0.001494 2002-Apr-19 00:00 *m 150.87341 41.38329 0.0813615953 3.48815582 0.31 1.10 0.001416 2002-Apr-20 00:00 *m 154.67662 44.17193 0.0812933993 3.70268651 0.31 1.11 0.001332 2002-Apr-21 00:00 *m 158.85287 46.80591 0.0815932775 3.88723293 0.32 1.13 0.001241 2002-Apr-22 00:00 *m 163.40551 49.23542 0.0822575059 4.03666971 0.32 1.14 0.001147 2002-Apr-23 00:00 *m 168.31937 51.41507 0.0832774311 4.14809858 0.32 1.16 0.001051 2002-Apr-24 00:00 *m 173.55549 53.30729 0.0846400341 4.22089675 0.33 1.17 0.000954 2002-Apr-25 00:00 *m 179.04838 54.88547 0.0863287151 4.25648837 0.33 1.18 0.000857 2002-Apr-26 00:00 * 184.70738 56.13630 0.0883241962 4.25791693 0.33 1.19 0.000764 2002-Apr-27 00:00 * 190.42357 57.06082 0.0906054387 4.22932274 0.34 1.20 0.000674 2002-Apr-28 00:00 * 196.08131 57.67378 0.0931504955 4.17542329 0.34 1.21 0.000588 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Jon Giorgini (2002 April 5): With 287 optical obs spanning Apr 11, 1999 to Apr 4, 2002, 2 Doppler measurements on Apr 17, 1999, numbered asteroid (38071) 1999 GU3 solution #15 was determined. 3-sigma S-band uncertainties are below. DATE Pointing S-band Dop Delay (") Hz (sec) ----------------- --------- ---------- ---------- 7-APR-2002 00:00 0.676 <1.000 0.001142 9-APR-2002 00:00 0.771 <1.000 0.001139 11-APR-2002 00:00 0.934 <1.000 0.001126 13-APR-2002 00:00 1.167 <1.000 0.001098 15-APR-2002 00:00 1.457 <1.000 0.001052 17-APR-2002 00:00 1.773 <1.000 0.000986 OSOD, delay, Doppler and pointing predict files have been established at Arecibo: utuado:/share/trabuco4/jplephem/osod/ops/1999gu3/user_files/ Due to the low uncertainties, I do not expect a further update prior to the experiment. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From Jon Giorgini (2002 April 17): With 337 optical observations spanning 11 Apr 1999 to 15 Apr 2002, 2 delay and 3 Doppler, solution #21 3-sigma X-band uncertainties are as follows: DATE Pointing X-band Dop Delay (") Hz (sec) ----------------- --------- ---------- ---------- 19-APR-2002 00:00 0.200 0.508 0.000045 20-APR-2002 00:00 0.197 0.538 0.000053 21-APR-2002 00:00 0.195 0.564 0.000061 22-APR-2002 00:00 0.194 0.588 0.000069 23-APR-2002 00:00 0.193 0.609 0.000077 24-APR-2002 00:00 0.194 0.626 0.000085 25-APR-2002 00:00 0.196 0.640 0.000093 26-APR-2002 00:00 0.198 0.652 0.000101 27-APR-2002 00:00 0.202 0.660 0.000109 28-APR-2002 00:00 0.207 0.666 0.000116 Predicts for Apr 21-23 (only) are on Intruder. XMIT is for DSS-14 -> Greenbank (constant rcv freq of 8560 MHz). RCV is for DSS-14 reception of its transmission for Greenbank. There are rise/set problems that mean post Apr 23 predicts will have to be generated separately (and later).
Setups
During the first Goldstone track on April 21 (!), the strategy is to move from cw to hi-resolution bistatic (DSS-14->GBT and DSS-14->DSS-13) imaging as soon as possible. We're going to start with monostatic cw to verify that we have echoes, to measure a Doppler correction, and to resolve the echoes in Doppler frequency. Then we'll update the range using 10 usec and 1 usec setups. After that we'll do bistatic Goldstone->Greenbank (and DSS-14->DSS-13) CW for several minutes to verify that we have echoes at Greenbank. This may require using much larger transmit offsets (e.g. 500 Hz) than we normally use for monostatic Goldstone observations. We want to devote the rest of the track to 1/8 usec Goldstone->Greenbank imaging. We will also receive 1/8 usec echoes at DSS-13 while we are receiving at Greenbank. Starting monostatic CW setup for the first track: TX polarization RCP RCV polarization both Frequencies: 2 Dwell: 30 seconds Bandwidth: 2000 Hz Sampling interval: 500 x 0.1 usec VME FFT for PSD files: 16384 for 0.12207-Hz resolution Possible ranging setups to match-filter the echo in Doppler: 255 code x 256 FFT single sample: --------------------------------------------------------------------------- Modified from TU1XS80 baud 10 usec code 255 gates 255 FFT 256 CLT 11 ncoh 15 bandwidth 26.14 Hz resolution 0.102 Hz TXOFF TBD incoh sums 1 => 9.792 sec/record (we'll get 6-7 records/run) --------------------------------------------------------------------------- TU1XS08 baud 1 usec code 255 gates 255 FFT 256 CLT 34 ncoh 153 bandwidth 25.6 Hz resolution 0.100 Hz TXOFF TBD incoh sums 1 => 10 sec/record (we'll get 6-7 records/run) STANDARD RANGING SETUPS --------------------------------------------------------------------------- 127 x 64 10-usec single sample baud 10 usec code 127 gates 127 FFT 64 CLT 11 ncoh 2 bandwidth 394 Hz resolution 6.15 Hz TXOFF TBD incoh sums 64 => 10.4 sec/record --------------------------------------------------------------------------- 127 x 64 11-usec single sample. baud 11 usec code 127 gates 127 PRP 1397 FFT 64 CLT 11 ncoh 2 bandwidth 357.9 Hz resolution 5.59 Hz TXOFF TBD ------------------------------------------------------------------------- 0.125-usec ranging setup JX1XS001 baud 0.125 usec code 127 gates 127 FFT 64 ncoh 1968 bandwidth 32.008 Hz resolution 0.5001 Hz TXOFF 6 Hz = 12 cells, => cell 44 incoh sums 4 looks=> 8 sec/record => expect records per run ~ RTT/8 CLT gate 34.8 _____________________________________________________________________ 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 ____________________________________________________________________ RANGING SETUPS from Toutatis 1992: (code=255, FFT=256, 1 channel) ____________________________________________________________________ Setup Baud NACC bandwidth resolution 1/res'n nom Hz Hz sec gate ____________________________________________________________________ TU1XS01 0.125 123 255.06 0.9963 1.00 34 890 35.25 0.1377 7.26 1471 21.327 0.08331 12.00 2210 14.196 0.05545 18.03 2942 10.664 0.04166 24.01 3309 9.4810 0.03704 27.00 3700 8.4791 0.03312 30.19 7400 4.2395 0.01656 60.38 14800 2.1198 0.00828 120.77 TU1XS02 0.25 123 127.5 0.498 TU1XS04 0.500 307 25.5 0.100 TU1XS08 1.000 153 25.6 0.100 TU1XS16 2.000 4 490.2 1.915 TU1XS32 4.000 2 490.2 1.915 TU1XS33 4.125 2 475.3 1.857 TU1XS80 10.000 1 392.2 1.532 11 TU1XS88 11.000 1 356.5 1.393 11
Instructions
NOTE: Data should be moved to the appropriate subdirectories in intruder:/d1/1999GU3/raw/
1999 GU3 POINTING:
For these observations, we need the following files: PRDX.OUT.14-14.Apr23-30.s27 PUNCH.OUT.14-14.Apr23-30.s27 These files are created in: intruder:/export/data2/osod/ops/1999gu3/ and are copied to: intruder:/d1/1999GU3/support/ POINTING Date (UTC) DOY hhmmss RA Dec MACRO TX Offsets RTT OSOD LHA Dec 2002 04 21 111 230000 163.2104 49.1342 A 82.1 21 2002 04 22 112 000000 163.4054 49.2354 A 82.1 2002 04 22 112 010000 163.5988 49.3358 A -0.0044 0.0022 82.1 2002 04 22 112 020000 163.7907 49.4350 A 82.1 2002 04 22 112 030000 163.9816 49.5329 AB 82.2 2002 04 22 112 040000 164.1720 49.6293 B 82.2 2002 04 22 112 050000 164.3625 49.7240 B 82.3 2002 04 22 112 060000 164.5537 49.8170 B -0.0044 0.0021 82.3 2002 04 22 112 070000 164.7463 49.9084 B 82.3 2002 04 22 112 080000 164.9410 49.9983 B 82.4 2002 04 22 112 090000 165.1380 50.0869 B 82.4 2002 04 22 112 230000 168.1091 51.3249 A 83.1 25 2002 04 23 113 000000 168.3192 51.4150 A 83.1 2002 04 23 113 010000 168.5274 51.5043 A -0.0048 0.0021 83.2 2002 04 23 113 020000 168.7340 51.5925 A 83.2 2002 04 23 113 030000 168.9393 51.6793 AB 83.2 2002 04 23 113 040000 169.1438 51.7645 B 83.3 2002 04 23 113 050000 169.3482 51.8480 B 83.3 2002 04 23 113 060000 169.5530 51.9298 B -0.0047 0.0018 83.4 2002 04 23 113 070000 169.7591 52.0098 B 83.5 2002 04 23 113 080000 169.9669 52.0882 B 83.5 2002 04 23 113 090000 170.1770 52.1652 B 83.6 2002 04 23 113 230000 173.3322 53.2296 A 84.4 27 2002 04 24 114 000000 173.5553 53.3073 A 84.5 2002 04 24 114 010000 173.7764 53.3841 A -0.0051 0.0018 84.5 2002 04 24 114 020000 173.9954 53.4598 AB 84.6 2002 04 24 114 030000 174.2130 53.5342 AB 84.6 2002 04 24 114 040000 174.4294 53.6070 B 84.7 2002 04 24 114 050000 174.6454 53.6780 B 84.8 2002 04 24 114 060000 174.8616 53.7473 B -0.0051 0.0016 84.8 2002 04 24 114 070000 175.0787 53.8147 B 84.9 2002 04 24 114 080000 175.2972 53.8805 B 85.0 2002 04 24 114 090000 175.5179 53.9447 B 85.1 2002 04 24 114 100000 175.7411 54.0076 B 85.1 2002 04 27 117 010000 190.6602 57.0972 A 90.5 27 2002 04 27 117 020000 190.8943 57.1328 A 90.6 2002 04 27 117 030000 191.1260 57.1673 A -0.0058 0.0009 90.7 2002 04 27 117 040000 191.3554 57.2005 AB 90.8 2002 04 27 117 050000 191.5833 57.2321 AB 90.9 2002 04 27 117 060000 191.8102 57.2620 B 91.1 2002 04 27 117 070000 192.0367 57.2901 B 91.1 2002 04 27 117 080000 192.2636 57.3165 B -0.0058 0.0007 91.2 2002 04 27 117 090000 192.4915 57.3413 B 91.3 2002 04 27 117 100000 192.7210 57.3647 B 91.4 2002 04 27 117 110000 192.9525 57.3868 B 91.5 2002 04 27 117 120000 193.1864 57.4080 B 91.7 2002 04 28 118 000000 196.0811 57.6738 A 93.0 27 2002 04 28 118 010000 196.3139 57.6976 A 93.1 2002 04 28 118 020000 196.5438 57.7208 A 93.2 2002 04 28 118 030000 196.7709 57.7430 A 93.3 2002 04 28 118 040000 196.9956 57.7641 A -0.0058 0.0005 93.4 2002 04 28 118 050000 197.2184 57.7836 A 93.5 2002 04 28 118 060000 197.4398 57.8016 A 93.6 2002 04 28 118 070000 197.6604 57.8179 A 93.7 2002 04 28 118 080000 197.8811 57.8326 A 93.8 =================================================================================== PRDX.OUT.14-14.Apr23-30.s27 2002 APR 27 01:30 90.5647693392 -229567.526 289.7001 57.1151 190.778 39.488 2002 APR 27 01:40 90.5808730226 -229927.564 292.1679 57.1211 190.817 40.822 2002 APR 27 01:50 90.5970026372 -230307.316 294.6359 57.1270 190.856 42.160 2002 APR 27 02:00 90.6131595490 -230706.407 297.1039 57.1328 190.894 43.499 2002 APR 27 02:10 90.6293450993 -231124.426 299.5719 57.1387 190.933 44.838 2002 APR 27 02:20 90.6455606023 -231560.927 302.0401 57.1445 190.972 46.175 2002 APR 27 02:30 90.6618073338 -232015.431 304.5083 57.1502 191.010 47.508 2002 APR 27 02:40 90.6780865380 -232487.423 306.9766 57.1560 191.049 48.835 2002 APR 27 02:50 90.6943994246 -232976.358 309.4449 57.1617 191.088 50.154 2002 APR 27 03:00 90.7107471579 -233481.659 311.9133 57.1673 191.126 51.461 2002 APR 27 03:10 90.7271308671 -234002.716 314.3818 57.1730 191.164 52.755 2002 APR 27 03:20 90.7435516312 -234538.893 316.8503 57.1786 191.203 54.032 2002 APR 27 03:30 90.7600104900 -235089.526 319.3189 57.1841 191.241 55.290 2002 APR 27 03:40 90.7765084296 -235653.921 321.7875 57.1896 191.279 56.523 2002 APR 27 03:50 90.7930463897 -236231.361 324.2562 57.1951 191.317 57.729 2002 APR 27 04:00 90.8096252643 -236821.105 326.7249 57.2005 191.355 58.901 2002 APR 27 04:10 90.8262458808 -237422.387 329.1937 57.2059 191.394 60.036 2002 APR 27 04:20 90.8429090260 -238034.422 331.6625 57.2112 191.432 61.128 2002 APR 27 04:30 90.8596154256 -238656.404 334.1314 57.2165 191.470 62.170 2002 APR 27 04:40 90.8763657465 -239287.508 336.6002 57.2217 191.507 63.155 2002 APR 27 04:50 90.8931605972 -239926.894 339.0692 57.2269 191.545 64.076 2002 APR 27 05:00 90.9100005327 -240573.704 341.5381 57.2321 191.583 64.924 2002 APR 27 05:10 90.9268860384 -241227.068 344.0071 57.2372 191.621 65.692 2002 APR 27 05:20 90.9438175431 -241886.103 346.4761 57.2422 191.659 66.370 2002 APR 27 05:30 90.9607954157 -242549.917 348.9451 57.2473 191.697 66.951 2002 APR 27 05:40 90.9778199597 -243217.607 351.4142 57.2522 191.735 67.425 2002 APR 27 05:50 90.9948914121 -243888.265 353.8832 57.2571 191.772 67.785 2002 APR 27 06:00 91.0120099517 -244560.976 356.3523 57.2620 191.810 68.027 2002 APR 27 06:10 91.0291756902 -245234.822 358.8214 57.2668 191.848 68.145 2002 APR 27 06:20 91.0463886721 -245908.882 1.2905 57.2716 191.886 68.137 2002 APR 27 06:30 91.0636488802 -246582.235 3.7596 57.2763 191.923 68.004 2002 APR 27 06:40 91.0809562384 -247253.963 6.2287 57.2809 191.961 67.748 2002 APR 27 06:50 91.0983105920 -247923.149 8.6978 57.2856 191.999 67.374 2002 APR 27 07:00 91.1157117395 -248588.881 11.1668 57.2901 192.037 66.887 2002 APR 27 07:10 91.1331594013 -249250.254 13.6359 57.2946 192.074 66.295 2002 APR 27 07:20 91.1506532404 -249906.371 16.1050 57.2991 192.112 65.607 2002 APR 27 07:30 91.1681928601 -250556.345 18.5740 57.3035 192.150 64.831 2002 APR 27 07:40 91.1857777991 -251199.300 21.0430 57.3079 192.188 63.975 2002 APR 27 07:50 91.2034075322 -251834.373 23.5120 57.3123 192.226 63.048 2002 APR 27 08:00 91.2210814800 -252460.716 25.9810 57.3165 192.264 62.059 2002 APR 27 08:10 91.2387989985 -253077.497 28.4499 57.3208 192.302 61.014 2002 APR 27 08:20 91.2565593916 -253683.902 30.9189 57.3250 192.339 59.920 2002 APR 27 08:30 91.2743619014 -254279.135 33.3877 57.3291 192.377 58.784 2002 APR 27 08:40 91.2922057203 -254862.423 35.8566 57.3332 192.415 57.612 2002 APR 27 08:50 91.3100899845 -255433.013 38.3254 57.3373 192.453 56.407 2002 APR 27 09:00 91.3280137757 -255990.177 40.7942 57.3413 192.492 55.176 2002 APR 27 09:10 91.3459761279 -256533.211 43.2629 57.3453 192.530 53.922 2002 APR 27 09:20 91.3639760296 -257061.437 45.7315 57.3493 192.568 52.648 2002 APR 27 09:30 91.3820124173 -257574.205 48.2002 57.3532 192.606 51.359 2002 APR 27 09:40 91.4000841883 -258070.895 50.6687 57.3570 192.644 50.056 2002 APR 27 09:50 91.4181901918 -258550.913 53.1373 57.3609 192.683 48.744 2002 APR 27 10:00 91.4363292397 -259013.700 55.6057 57.3647 192.721 47.423 2002 APR 27 10:10 91.4545001081 -259458.726 58.0741 57.3684 192.759 46.098 2002 APR 27 10:20 91.4727015344 -259885.494 60.5425 57.3722 192.798 44.768 2002 APR 27 10:30 91.4909322174 -260293.544 63.0108 57.3759 192.837 43.438 2002 APR 27 10:40 91.5091908350 -260682.446 65.4790 57.3796 192.875 42.108 2002 APR 27 10:50 91.5274760314 -261051.808 67.9472 57.3832 192.914 40.779 2002 APR 27 11:00 91.5457864188 -261401.274 70.4153 57.3868 192.953 39.455 2002 APR 27 11:10 91.5641205966 -261730.525 72.8833 57.3904 192.991 38.135 2002 APR 27 11:20 91.5824771352 -262039.278 75.3513 57.3940 193.030 36.823 2002 APR 27 11:30 91.6008545918 -262327.289 77.8192 57.3975 193.069 35.518 PRDX.OUT.14-14.Apr23-30.s27 2002 APR 28 00:40 93.0318906962 -253112.135 272.6925 57.6897 196.237 30.688 2002 APR 28 00:50 93.0496390754 -253311.820 275.1606 57.6937 196.275 31.944 2002 APR 28 01:00 93.0674021878 -253532.450 277.6289 57.6976 196.314 33.213 2002 APR 28 01:10 93.0851814956 -253773.922 280.0972 57.7015 196.352 34.493 2002 APR 28 01:20 93.1029784572 -254036.090 282.5656 57.7054 196.391 35.782 2002 APR 28 01:30 93.1207945122 -254318.773 285.0341 57.7093 196.429 37.080 2002 APR 28 01:40 93.1386310959 -254621.750 287.5027 57.7132 196.467 38.384 2002 APR 28 01:50 93.1564896195 -254944.763 289.9713 57.7170 196.506 39.695 2002 APR 28 02:00 93.1743714770 -255287.515 292.4400 57.7208 196.544 41.009 2002 APR 28 02:10 93.1922780431 -255649.675 294.9089 57.7246 196.582 42.327 2002 APR 28 02:20 93.2102106631 -256030.874 297.3777 57.7283 196.620 43.645 2002 APR 28 02:30 93.2281706572 -256430.708 299.8467 57.7321 196.658 44.962 2002 APR 28 02:40 93.2461593191 -256848.738 302.3157 57.7358 196.696 46.277 2002 APR 28 02:50 93.2641779052 -257284.491 304.7848 57.7394 196.733 47.587 2002 APR 28 03:00 93.2822276403 -257737.463 307.2540 57.7430 196.771 48.891 2002 APR 28 03:10 93.3003097150 -258207.114 309.7232 57.7466 196.809 50.185 2002 APR 28 03:20 93.3184252764 -258692.878 312.1925 57.7502 196.846 51.468 2002 APR 28 03:30 93.3365754352 -259194.154 314.6619 57.7537 196.884 52.737 2002 APR 28 03:40 93.3547612545 -259710.316 317.1313 57.7572 196.921 53.988 2002 APR 28 03:50 93.3729837574 -260240.707 319.6008 57.7606 196.958 55.218 2002 APR 28 04:00 93.3912439149 -260784.647 322.0704 57.7641 196.996 56.423 2002 APR 28 04:10 93.4095426521 -261341.428 324.5400 57.7674 197.033 57.599 2002 APR 28 04:20 93.4278808460 -261910.318 327.0096 57.7708 197.070 58.742 2002 APR 28 04:30 93.4462593191 -262490.565 329.4793 57.7740 197.107 59.847 2002 APR 28 04:40 93.4646788379 -263081.393 331.9491 57.7773 197.144 60.907 2002 APR 28 04:50 93.4831401163 -263682.009 334.4188 57.7805 197.181 61.916 2002 APR 28 05:00 93.5016438168 -264291.598 336.8887 57.7836 197.218 62.869 2002 APR 28 05:10 93.5201905321 -264909.332 339.3585 57.7867 197.255 63.756 2002 APR 28 05:20 93.5387808085 -265534.366 341.8284 57.7898 197.292 64.572 2002 APR 28 05:30 93.5574151276 -266165.842 344.2984 57.7928 197.329 65.307 2002 APR 28 05:40 93.5760939081 -266802.889 346.7684 57.7958 197.366 65.954 2002 APR 28 05:50 93.5948175119 -267444.626 349.2383 57.7987 197.403 66.504 2002 APR 28 06:00 93.6135862344 -268090.163 351.7084 57.8016 197.440 66.951 2002 APR 28 06:10 93.6324003130 -268738.604 354.1784 57.8045 197.477 67.287 =================================================================================== ARECIBO MASTERLOG ----------------- April 8-9 UT (April 8 AST) ========================== tapes: 802339, DLT 221 & 222 /share/olda/datafile.08apr02.r1602.1 CW soln 15 /share/olda/datafile.08apr02.r1602.2 4.0 us soln 15 /share/olda/datafile.08apr02.r1602.3 4.5 us soln 15 /share/olda/datafile.08apr02.r1602.4 CW soln 15 /share/olda/datafile.08apr02.r1602.5 CW soln 17 /share/olda/datafile.08apr02.r1602.6 0.5 us soln 17 part of 1 run (rest is on tape) <--- AST ---> <--- UTC ---> rcsta rcend rcsta rcend setup code Bandwidth osod TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS Comments ------------------------------------------------------------------------------------------ CW no hopping 5000 15 +200 6 183351-185208 223351-225208 4.0 us 8191 30.5 15 +2 4 185521-190653 225521-230653 4.5 us 8191 27.1 15 +2 3 191000-191812 231000-231812 CW no hopping 5000 15 +200 5 192608-194104 232608-234104 CW no hopping 5000 17 +200 1 194448-194620 234448-234620 0.5 us 65535 30.5 17 +2 5 195138-201138 235138-001138 0.2 us 65535 76.3 17 +2 10 203933-211105 003933-011105 ===================================================================================== April 10-11 UT (April 10 AST) =========================== tapes: 802341, DLT 223 & 224 /share/olda/datafile.10apr02.r1602.1 0.5 us soln 17 /share/olda/datafile.10apr02.r1602.2 CW soln 17 0.5 us 65535 30.5 17 +2 2 183354-183831 223354-223831 CW no hopping 5000 17 +200 11 184539-191835 224539-231835 0.1 us 65535 152.6 17 +10 29 192247-210751 232247-010751 ==================================================================================== April 11-12 UT (April 11 AST) ----------------------------- tapes: 802343, DLT 225 & 226 /share/olda/datafile.11apr02.r1602.1 CW soln 19 CW no hopping 5000 19 +200 5 183924-185326 223924-225326 BAD DATA 10 185912-193126 225912-233126 GOOD DATA 0.1 us 65535 152.6 19 +10 30 193207-210257 233207-011057 ===================================================================================== April 12-13 UT (April 12 AST) ----------------------------- tape: 802344, DLT 227 & 228 /share/olda/datafile.12apr02.r1602.1 CW soln 19 CW no hopping 5000 19 +200 5 184137-185837 224137-225837 0.1 us 65535 152.6 19 +10 38 190253-210023 230253-010023 ===================================================================================== April 13-14 UT (April 13 AST) ----------------------------- tape: 802344 /share/olda/datafile.13apr02.r1602.1 CW soln 19 monostatic /share/olda/datafile.13apr02.r1602.2 CW soln 19 monostatic CW no hopping 5000 19 +200 1 184946-185105 224946-225105 monostatic CW no hopping 19 +200 185924-190113 225924-230113 tx bistatic 0.1 us 65535 152.6 19 +10 190304-203503 230304-003503 tx bistatic CW no hopping 5000 19 +200 3 203704-204413 003704-004413 monostatic ===================================================================================== April 14-15 UT (April 14 AST) ----------------------------- tapes: 802345, DLT 221 & 222 (same as April 8) /share/olda/datafile.14apr02.r1602.1 CW soln 19 monostatic CW no hopping 5000 19 +200 1 190106-190224 230106-230224 monostatic CW no hopping 19 +200 190343-190543 230343-230543 tx bistatic 0.1 us 65535 152.6 19 +10 3 190803-191508 230803-231508 monostatic CW no hopping 19 +2000 191753-191953 231753-231953 tx bistatic 0.1 us 65535 152.6 19 +10 3 192033-192738 232033-232738 monostatic 0.1 us 65535 152.6 19 +10 193004-205730 233004-005730 tx bistatic ===================================================================================== GOLDSTONE MASTERLOG ------------------- RCV file setup runs start -stop osod OFFSET TX Poln --------------------------------------------------------------------------------------------------- PSD0211.1999GU3,VOLT0211.1999GU3 CW 2 kHz, 2 hop, 30 s dwell,16kFFT 10 231820-234440 23 none RCP monostatic gu11103 10 us x 0.1 Hz 5 002955-004249 23 +3 Hz RCP monostatic 3 looks/record gu11104 10 us x 0.1 Hz 6 004657-010228 23 +3 Hz RCP monostatic 1 look/record gu11107 1 us x 0.1 Hz 11 012552-015739 23 +3 Hz RCP monostatic GBT CW no hops tx 020620-022030 23 +2000 Hz RCP bistatic Greenbank GBT CW no hops tx 041300-044025 23 +2000 Hz RCP bistatic Greenbank PSD02111RH.1999GU3,VOLT02111RH.1999gu3 also cw DSS13 042830-044025 23 +2000 Hz RCP bistatic DSS-13 no echo PSD0211132K.1999gu3,VOLT0211132K.1999gu3 CW 2 kHz, 2 hops, 30 s dwell,32kFFT 4 045606-050547 23 none RCP monostatic 1/8 us 255 code tx 054340-062334 23 none RCP bistatic Greenbank gu11108 1/8 us x 0.083 Hz 054502-062045 23 none RCP bistatic DSS-13 bad data 1/8 us 255 code tx 062335-0730xx 25 +3 Hz RCP bistatic Greenbank gu11109 1/8 us x 0.083 Hz 064345-0730xx 25 none RCP bistatic DSS-13 bad data gu11110 1/8 us x 0.083 Hz 073250-081815 25 none RCP bistatic DSS-13 no data ===================================================================================== Last modified: 2002 April 22
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 MS 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov Pasadena, CA 91109-8099
Asteroid Radar Astronomy