(144411) 2004 EW9 Goldstone Radar Observations Planning
(144411) 2004 EW9 was discovered at Palomar by NEAT on March 15, 2004. This object is a slow rotator with a 50-hour period, and it has a large lightcurve amplitude of 0.9 magnitudes that provides strong evidence for an elongated shape. Its absolute magnitude of 16.5 suggests a diameter within a factor of two of 1.5 km. 2004 EW9 will approach within 0.12 AU of Earth on July 16, 2012 when it will be a moderately strong radar target at Goldstone and an excellent radar target at Arecibo. Four tracks are scheduled at Goldstone between July 15, 16, 20, and 21 and six tracks have been scheduled at Arecibo between July 11-15. Goldstone and Arecibo tracks have been designed to maximize orientational coverage of this object. We expect to see a bandwidth of few Hz at Goldstone, and due to the inference that this object is elongated, the bandwidths may vary considerably from day to day. Due to the slow rotation, though, the asteroid will rotate less than 35 degrees during our longest track, so during each track the bandwidths shouldn't change much. Arecibo detected echoes from this asteroid on July 11 and obtained a bandwidth of about 0.3 Hz. This suggests that Goldstone echoes could have a bandwidth of about 1 Hz if we see the asteroid at a similar orientation. The next opportunity to observe 2004 EW9 with radar is in June of 2020 when it will approach within 0.09 AU. 2004 EW9 is a bright optical target (~16 mag) in early June, but then it gets too close to the Sun and becomes a daytime object until early August.
Orbital and Physical Characteristics orbit type Apollo semimajor axis 1.918 AU eccentricity 0.532 inclination 8.8 deg perihelion distance 0.897 AU aphelion distance 2.939 AU absolute magnitude (H) 16.5 diameter 1.5 km (+- a factor of two) rotation period 49.94 h (P. Pravec, Ondrejov NEO Photometric Program Webpage) pole direction unknown lightcurve amplitude 0.9 mag (P. Pravec, Ondrejov NEO Photometric Program Webpage) spectral class unknown Last update: 2012 July 18
M.P.E.C. 2004-F07 Issued 2004 Mar. 16, 12:54 UT The Minor Planet Electronic Circulars contain information on unusual minor planets and routine data on comets. They are published on behalf of Commission 20 of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. Supported in part by the Steven and Michele Kirsch Foundation Prepared using the Tamkin Foundation Computer Network MPC@CFA.HARVARD.EDU URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714 2004 EW9 Observations: K04E09W* C2004 03 15.35898 12 13 26.23 -21 48 50.4 17.1 EF007644 K04E09W C2004 03 15.39127 12 13 23.25 -21 48 57.7 17.1 EF007644 K04E09W C2004 03 15.41226 12 13 21.34 -21 49 02.1 17.2 EF007644 K04E09W C2004 03 15.94321 12 12 34.61 -21 50 58.8 17.9 V EF007198 K04E09W C2004 03 15.95021 12 12 33.97 -21 51 00.1 17.9 V EF007198 K04E09W C2004 03 15.95580 12 12 33.45 -21 51 01.2 17.9 V EF007198 K04E09W C2004 03 15.96000 12 12 33.06 -21 51 02.3 17.9 V EF007198 K04E09W C2004 03 15.99111 12 12 30.28 -21 51 07.7 17.7 R EF007938 K04E09W C2004 03 15.99358 12 12 29.96 -21 51 09.8 18.2 R EF007132 K04E09W C2004 03 15.99647 12 12 29.66 -21 51 10.1 18.1 R EF007132 K04E09W C2004 03 15.99936 12 12 29.38 -21 51 10.5 18.0 R EF007132 K04E09W C2004 03 16.00726 12 12 28.80 -21 51 11.3 17.8 R EF007938 K04E09W C2004 03 16.02000 12 12 27.43 -21 51 14.7 18.0 R EF007204 K04E09W C2004 03 16.02472 12 12 26.99 -21 51 15.7 EF007204 K04E09W C2004 03 16.02852 12 12 26.62 -21 51 16.6 17.7 R EF007204 K04E09W C2004 03 16.28417 12 12 03.82 -21 52 08.4 17.3 R EF007H06 K04E09W C2004 03 16.28564 12 12 03.68 -21 52 08.5 17.2 R EF007H06 K04E09W C2004 03 16.28711 12 12 03.54 -21 52 08.8 17.1 R EF007H06 K04E09W C2004 03 16.33844 12 11 58.77 -21 52 19.4 17.8 R EF007854 K04E09W C2004 03 16.34064 12 11 58.52 -21 52 20.2 17.6 R EF007854 K04E09W C2004 03 16.34615 12 11 58.01 -21 52 21.3 17.7 R EF007854 K04E09W 5C2004 03 16.35775 12 11 56.98 -21 52 23.8 18.0 R EF007673 K04E09W 5C2004 03 16.36007 12 11 56.76 -21 52 24.2 EF007673 K04E09W 5C2004 03 16.36238 12 11 56.54 -21 52 24.8 EF007673 K04E09W 5C2004 03 16.36493 12 11 56.31 -21 52 25.2 EF007673 Observer details: 132 Bedoin. Observer P. Antonini. 0.30-m f/3.3 Schmidt-Cassegrain + CCD. 198 Wildberg. Observer R. Apitzsch. 0.235-m Schmidt-Cassegrain + CCD. 204 Schiaparelli Observatory. Observer L. Buzzi. 0.60-m f/4.64 Newtonian + CCD. 644 Palomar Mountain/NEAT. Observers S. Pravdo, D. MacDonald, K. Lawrence, M. Hicks. 1.2-m Schmidt + CCD. 673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.6-m reflector + CCD. 854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.356-m f/10.0 Schmidt-Cassegrain + CCD. 938 Linhaceira. Observer R. Goncalves. 0.25-m f/6.7 Schmidt-Cassegrain + CCD. H06 New Mexico Skies Observatory. Observer R. Hutsebaut. Orbital elements: 2004 EW9 Epoch 2004 Mar. 16.0 TT = JDT 2453080.5 MPC M 315.74435 (2000.0) P Q n 0.33137170 Peri. 7.82536 +0.45830165 +0.87638977 a 2.0681996 Node 289.55489 -0.82372451 +0.35628126 e 0.5843975 Incl. 9.03551 -0.33382261 +0.32404418 P 2.97 H 16.4 G 0.15 From 25 observations 2004 Mar. 15-16. Ephemeris: 2004 EW9 a,e,i = 2.07, 0.58, 9 q = 0.8595 Date TT R. A. (2000) Decl. Delta r Elong. Phase V 2004 03 16 12 12.49 -21 51.0 0.840 1.794 155.4 13.3 18.1 2004 03 26 11 55.27 -22 05.7 0.744 1.714 159.2 11.9 17.7 2004 04 05 11 34.71 -21 33.8 0.671 1.632 154.8 15.1 17.4 . . 2005 01 20 02 09.06 +21 12.3 1.745 2.109 97.3 27.6 20.5 2005 01 30 02 23.05 +21 26.6 1.935 2.176 90.3 26.9 20.7 2005 02 09 02 37.61 +21 48.6 2.126 2.241 83.6 25.9 21.0 2005 02 19 02 52.65 +22 15.6 2.316 2.304 77.0 24.7 21.2 2005 03 01 03 08.06 +22 45.2 2.503 2.364 70.5 23.3 21.4 2005 03 11 03 23.78 +23 15.6 2.685 2.422 64.1 21.7 21.5 2005 03 21 03 39.75 +23 45.3 2.860 2.478 57.9 19.9 21.6 Timothy B. Spahr (C) Copyright 2004 MPC M.P.E.C. 2004-F07
Target Name: 2004 EW9 D = 1.5 km Period = 49.9 h OC albedo = 0.1 UT # max start date window RA, dec dist runs SNR SNR/run ----------------------------------------------------------------------- 2012 Jul 10 16:39-02:30 135, +13 0.127 150 78 7 2012 Jul 11 16:23-02:24 134, +15 0.125 155 84 7 2012 Jul 12 16:06-02:19 132, +17 0.123 160 90 8 2012 Jul 13 15:49-02:12 130, +19 0.122 164 94 8 2012 Jul 14 15:31-02:06 128, +21 0.121 168 98 8 2012 Jul 15 15:13-01:59 126, +23 0.120 172 100 8 2012 Jul 16 14:55-01:51 123, +26 0.120 175 100 9 2012 Jul 17 14:36-01:43 121, +28 0.120 178 100 8 2012 Jul 18 14:17-01:35 119, +30 0.121 180 100 8 2012 Jul 19 13:58-01:27 116, +32 0.122 182 98 8 2012 Jul 20 13:39-01:17 114, +34 0.123 182 94 8 2012 Jul 21 13:20-01:08 111, +35 0.125 183 90 7 2012 Jul 22 13:01-00:58 109, +37 0.127 182 85 7 2012 Jul 23 12:42-00:48 106, +39 0.129 181 79 7 2012 Jul 24 12:24-00:38 103, +40 0.132 180 74 6 2012 Jul 25 12:06-00:28 101, +41 0.135 178 68 6 2012 Jul 26 11:48-00:17 98, +42 0.138 175 62 5 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 1525-2040 0825-1340 Jul 15 6:15 120 8 198 Jul 16 1525-2015 0825-1315 Jul 16 4:50 120 9 202 Jul 20 1340-1510 0640-0810 Jul 20 1:30 123 8 Overlaps time scheduled for 2002 AM31 203 Jul 21 1320-1505 0620-0805 Jul 21 1:45 125 7 Overlaps time scheduled for 2002 AM31 NOTE: TXON is shown at the earliest time, which may be only 30 min into the precal time. DOY 202: TXON is 15 minutes later than scheduled because of airspace limits. That is, the precal is 105 minutes long. The asteroid doesn't rise above 20 degrees until 1340. The Goldstone 2004 EW9 tracks are interleaved with tracks scheduled for 2002 AM31. The chart below shows the schedule for both objects from July 15-29: # = 2004 EW9 * = 2002 AM31 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 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 July HHMM 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 DOY - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Scheduled Arecibo tracks: UT UT PDT AST Duration Round-trip DOY Date TX Window TX Window TX Window hh:mm time (sec) SNR/Run --- ---- --------- --------- --------- --------- ---------- ------- 193 Jul 11 1643-1923 0943-1223 1243-1523 2:40 125 210 194 Jul 12 1630-1914 0930-1214 1230-1514 2:44 124 220 . 197 Jul 15 1555-1837 0855-1137 1155-1437 2:42 120 250 198 Jul 16 1544-1822 0844-1122 1144-1422 2:38 120 250 . 201 Jul 19 1518-1726 0818-1026 1118-1326 2:08 122 202 Jul 20 1512-1704 0812-1004 1112-1304 1:52 123 2004 EW9 will move only 18 degrees between July 11-21 so the subradar latitude should change little.This figure shows the maximum rotation phase coverage possible on a given date if everything works and there are no gaps. There have already been significant gaps at Arecibo on July 11 and 12, so Goldstone observations on July 15 and 16 could help fill them.
DAILY ROTATIONAL PHASE COVERAGE
From Jon Giorgini, 2012 July 3: With 1561 optical measurements (2001-Mar-14 to 2012-Jun-7), 144411 (2004 EW9) orbit solution #152 was estimated and OSOD with nominal predicts established for both Arecibo and DSS-14 in the /a144411 sub-directory. 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 2.322 2.15 7.80 0.000589 2012-Jul-12 00:00 2.415 2.28 8.28 0.000510 2012-Jul-13 00:00 2.497 2.40 8.71 0.000426 2012-Jul-14 00:00 2.566 2.49 9.07 0.000340 2012-Jul-15 00:00 2.619 2.57 9.34 0.000252 2012-Jul-16 00:00 2.654 2.62 9.52 0.000168 2012-Jul-17 00:00 2.670 2.64 9.59 0.000105 2012-Jul-18 00:00 2.666 2.63 9.55 0.000112 2012-Jul-19 00:00 2.643 2.59 9.41 0.000180 2012-Jul-20 00:00 2.600 2.52 9.16 0.000265 2012-Jul-21 00:00 2.542 2.43 8.83 0.000352 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illuminations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta APmag S-O-T /r T-O-M/Illu% 2012-Jun-19 00:00 153.79507 -12.68989 0.21573591290864 16.51 73.9586 /T 79.8/ 0.4 2012-Jun-20 00:00 153.44009 -12.10534 0.21121451151272 16.53 72.4885 /T 67.7/ 0.2 2012-Jun-21 00:00 153.06236 -11.48972 0.20666802561685 16.56 70.9794 /T 55.4/ 1.9 2012-Jun-22 00:00 152.65922 -10.84008 0.20210220579636 16.59 69.4275 /T 43.0/ 5.6 2012-Jun-23 00:00 152.22783 -10.15326 0.19752358105118 16.62 67.8285 /T 30.9/ 11.2 2012-Jun-24 00:00 151.76512 -9.42580 0.19293953589797 16.66 66.1778 /T 19.8/ 18.5 2012-Jun-25 00:00 151.26781 -8.65400 0.18835839346912 16.71 64.4706 /T 13.9/ 27.4 2012-Jun-26 00:00 150.73242 -7.83389 0.18378950369375 16.76 62.7018 /T 19.4/ 37.5 2012-Jun-27 00:00 150.15518 -6.96126 0.17924333504092 16.83 60.8657 /T 31.3/ 48.5 2012-Jun-28 00:00 149.53212 -6.03162 0.17473156712265 16.90 58.9566 /T 45.0/ 59.7 2012-Jun-29 00:00 148.85902 -5.04033 0.17026717956659 16.99 56.9685 /T 59.6/ 70.7 2012-Jun-30 00:00 148.13145 -3.98255 0.16586453027085 17.09 54.8950 /T 74.8/ 80.8 2012-Jul-01 00:00 147.34474 -2.85341 0.16153936479207 17.21 52.7300 /T 90.4/ 89.2 2012-Jul-02 00:00 146.49408 -1.64809 0.15730904661661 n.a. 50.4671 /T 106.2/ 95.5 2012-Jul-03 00:00 145.57448 -0.36195 0.15319225320612 n.a. 48.1005 /T 122.2/ 99.1 2012-Jul-04 00:00 144.58084 1.00926 0.14920913790566 n.a. 45.6248 /T 138.1/ 99.8 2012-Jul-05 00:00 143.50802 2.46917 0.14538120442368 n.a. 43.0353 /T 153.8/ 97.9 2012-Jul-06 00:00 142.35085 4.02051 0.14173119466124 n.a. 40.3287 /T 168.9/ 93.4 2012-Jul-07 00:00 141.10423 5.66479 0.13828293047023 n.a. 37.5034 /T 173.1/ 87.0 2012-Jul-08 00:00 139.76323 7.40197 0.13506109214374 n.a. 34.5601 /T 159.2/ 79.0 2012-Jul-09 00:00 138.32324 9.22999 0.13209091199960 n.a. 31.5029 /T 144.6/ 70.1 2012-Jul-10 00:00 136.78010 11.14448 0.12939776362139 n.a. 28.3401 /T 130.2/ 60.5 2012-Jul-11 00:00 135.13032 13.13833 0.12700663609793 n.a. 25.0866 /T 115.8/ 50.9 2012-Jul-12 00:00 133.37136 15.20150 0.12494149644350 n.a. 21.7663 /T 101.6/ 41.3 2012-Jul-13 00:00 131.50183 17.32084 0.12322456052305 n.a. 18.4185 /T 87.4/ 32.1 2012-Jul-14 00:00 129.52180 19.48023 0.12187551124077 n.a. 15.1105 /T 73.2/ 23.7 2012-Jul-15 00:00 127.43314 21.66089 0.12091071971732 n.a. 11.9698 /T 58.9/ 16.1 2012-Jul-16 00:00 125.23968 23.84197 0.12034253705333 n.a. 9.2655 /T 44.8/ 9.7 2012-Jul-17 00:00 122.94756 26.00139 0.12017872722384 n.a. 7.5620 /T 30.9/ 4.8 2012-Jul-18 00:00 120.56524 28.11681 0.12042210303434 n.a. 7.5975 /T 18.4/ 1.5 2012-Jul-19 00:00 118.10364 30.16677 0.12107040674397 n.a. 9.3366 /L 13.0/ 0.2 2012-Jul-20 00:00 115.57599 32.13167 0.12211644814342 n.a. 12.0223 /L 21.6/ 0.9 2012-Jul-21 00:00 112.99761 33.99471 0.12354848142802 n.a. 15.1059 /L 35.1/ 3.8 2012-Jul-22 00:00 110.38548 35.74255 0.12535077495146 n.a. 18.3304 /L 49.8/ 8.8 2012-Jul-23 00:00 107.75775 37.36564 0.12750431036144 n.a. 21.5753 /L 64.9/ 15.8 2012-Jul-24 00:00 105.13309 38.85835 0.12998754203792 n.a. 24.7781 /L 80.2/ 24.6 2012-Jul-25 00:00 102.53004 40.21872 0.13277715320018 n.a. 27.9039 /L 95.4/ 34.8 2012-Jul-26 00:00 99.96632 41.44812 0.13584875806996 n.a. 30.9321 /L 110.4/ 45.9 2012-Jul-27 00:00 97.45825 42.55068 0.13917751602344 n.a. 33.8512 /L 125.0/ 57.3 2012-Jul-28 00:00 95.02029 43.53270 0.14273864030198 n.a. 36.6550 /L 138.7/ 68.4 2012-Jul-29 00:00 92.66464 44.40206 0.14650779839304 n.a. 39.3416 /L 150.1/ 78.7 2012-Jul-30 00:00 90.40107 45.16762 0.15046141243783 n.a. 41.9119 /L 155.8/ 87.3 2012-Jul-31 00:00 88.23687 45.83878 0.15457687525020 n.a. 44.3684 /L 152.4/ 94.0 2012-Aug-01 00:00 86.17693 46.42504 0.15883270026339 n.a. 46.7153 /L 142.4/ 98.2 2012-Aug-02 00:00 84.22389 46.93567 0.16320862207374 n.a. 48.9577 /L 130.0/ 99.8 2012-Aug-03 00:00 82.37839 47.37952 0.16768565953487 n.a. 51.1013 /L 116.9/ 98.9 2012-Aug-04 00:00 80.63937 47.76482 0.17224614803453 17.26 53.1520 /L 103.8/ 95.7 2012-Aug-05 00:00 79.00438 48.09913 0.17687374410560 17.16 55.1159 /L 91.0/ 90.5 2012-Aug-06 00:00 77.46985 48.38923 0.18155340485441 17.07 56.9992 /L 78.6/ 83.7 2012-Aug-07 00:00 76.03140 48.64121 0.18627134599098 16.99 58.8078 /L 66.7/ 75.7 2012-Aug-08 00:00 74.68408 48.86039 0.19101498387228 16.93 60.5475 /L 55.6/ 66.9 2012-Aug-09 00:00 73.42255 49.05145 0.19577286773006 16.87 62.2239 /L 45.3/ 57.6 2012-Aug-10 00:00 72.24129 49.21847 0.20053460788345 16.82 63.8420 /L 36.6/ 48.1 2012-Aug-11 00:00 71.13471 49.36492 0.20529080459519 16.78 65.4070 /L 30.3/ 38.8 2012-Aug-12 00:00 70.09724 49.49381 0.21003298080721 16.74 66.9234 /L 28.2/ 29.7 2012-Aug-13 00:00 69.12343 49.60770 0.21475352060892 16.71 68.3956 /L 31.0/ 21.4 2012-Aug-14 00:00 68.20800 49.70874 0.21944561406095 16.68 69.8275 /L 37.9/ 14.0 2012-Aug-15 00:00 67.34589 49.79876 0.22410320790310 16.66 71.2230 /L 47.2/ 7.8 2012-Aug-16 00:00 66.53224 49.87929 0.22872096068370 16.64 72.5856 /L 57.8/ 3.3 2012-Aug-17 00:00 65.76246 49.95158 0.23329420003786 16.62 73.9185 /L 69.3/ 0.7 2012-Aug-18 00:00 65.03225 50.01666 0.23781887942238 16.61 75.2246 /L 81.4/ 0.3 2012-Aug-19 00:00 64.33755 50.07540 0.24229153189419 16.60 76.5069 /L 93.7/ 2.4 2012-Aug-20 00:00 63.67458 50.12846 0.24670921970097 16.59 77.7677 /L 106.1/ 6.8 2012-Aug-21 00:00 63.03984 50.17639 0.25106948033279 16.58 79.0095 /L 118.4/ 13.5 2012-Aug-22 00:00 62.43006 50.21961 0.25537027162637 16.57 80.2343 /L 130.0/ 22.2 2012-Aug-23 00:00 61.84224 50.25846 0.25960991967747 16.56 81.4443 /L 140.3/ 32.4 2012-Aug-24 00:00 61.27356 50.29319 0.26378707324397 16.56 82.6412 /L 147.8/ 43.5 2012-Aug-25 00:00 60.72144 50.32398 0.26790066724102 16.55 83.8267 /L 150.3/ 54.9 2012-Aug-26 00:00 60.18345 50.35096 0.27194989652910 16.55 85.0024 /L 146.7/ 66.1 2012-Aug-27 00:00 59.65732 50.37420 0.27593420009900 16.55 86.1698 /L 138.6/ 76.3 2012-Aug-28 00:00 59.14091 50.39373 0.27985325513200 16.55 87.3303 /L 128.1/ 85.2 2012-Aug-29 00:00 58.63224 50.40953 0.28370697997119 16.54 88.4851 /L 116.7/ 92.1 2012-Aug-30 00:00 58.12939 50.42155 0.28749554444468 16.54 89.6355 /L 104.8/ 96.9 2012-Aug-31 00:00 57.63059 50.42970 0.29121938513963 16.54 90.7826 /L 93.0/ 99.4
Due to the slow rotation, we are expecting a bandwidth of only a few Hz, so we're going to start with a CW setup that should produce a quick detection and resolve the echo in frequency. CW setup: --------------------------------------------------------------------------- TX polarization RCP RCV polarization LCP & RCP Frequency hops: 4 Dwell 30 seconds Bandwidth: 4000 Hz Sampling interval: 2500 x 0.1 usec VME FFT for PSD files: 16384 for 0.24 Hz resolution Ranging setups: --------------------------------------------------------------------------- 127 x 128 10-usec baud 10 usec code 127 PRP 1270 usec FFT 128 ncoh 2 bandwidth 394 Hz resolution 3.1 Hz TXOFF +50 Hz (echo in bin 64+16=80) --------------------------------------------------------------------------- 127 x 128 11-usec baud 11 usec code 127 PRP 1397 usec FFT 128 ncoh 2 bandwidth 358 Hz resolution 2.8 Hz TXOFF +50 Hz (echo in bin 64+18=82) ------------------------------------------------------------------------- 255 x 128 1-usec single sample baud 1 usec code 255 FFT 128 ncoh 16 bandwidth 245 Hz resolution 1.9 Hz TXOFF +30 Hz -> echo would be centered at 64 + 16 = 80 ------------------------------------------------------------------------------- 0.25-usec ranging baud 0.25 usec code 255 FFT 256 ncoh 240 bandwidth 65 Hz resolution 0.26 Hz TXOFF +10 Hz -> echo would be centered at 128 + 39 = 167 _____________________________________________________________________ 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/a144411/PRDX.OUT.14f-14-14.s156 /PUNCH.OUT.14f-14-14.s156 /EPH.OUT.s156 POINTING TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2012 07 21 203 130000 111.8100 34.9194 A 124.2 s156 2012 07 21 203 140000 111.7009 34.9945 A 124.3 2012 07 21 203 150000 111.5905 35.0693 A 3.90 2.50 124.4 2012 07 21 203 160000 111.4788 35.1435 A 124.4 2012 07 21 203 170000 111.3660 35.2172 A 124.5 Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s156 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2012 JUL 21 13:00 124.2225110262 -161927.883 266.0013 34.9194 111.810 16.572 2012 JUL 21 13:10 124.2338683299 -162139.601 268.5262 34.9320 111.792 18.344 2012 JUL 21 13:20 124.2452416883 -162385.965 271.0512 34.9445 111.774 20.137 2012 JUL 21 13:30 124.2566335276 -162666.970 273.5762 34.9570 111.756 21.949 2012 JUL 21 13:40 124.2680462761 -162982.539 276.1012 34.9695 111.737 23.778 2012 JUL 21 13:50 124.2794823521 -163332.532 278.6263 34.9820 111.719 25.624 2012 JUL 21 14:00 124.2909441615 -163716.739 281.1514 34.9945 111.701 27.486 2012 JUL 21 14:10 124.3024340912 -164134.886 283.6766 35.0070 111.683 29.363 2012 JUL 21 14:20 124.3139545107 -164586.630 286.2018 35.0195 111.664 31.254 2012 JUL 21 14:30 124.3255077590 -165071.566 288.7270 35.0319 111.646 33.159 2012 JUL 21 14:40 124.3370961489 -165589.221 291.2523 35.0444 111.627 35.076 2012 JUL 21 14:50 124.3487219530 -166139.062 293.7776 35.0568 111.609 37.005 2012 JUL 21 15:00 124.3603874092 -166720.490 296.3029 35.0693 111.590 38.945 2012 JUL 21 15:10 124.3720947090 -167332.846 298.8283 35.0817 111.572 40.896 2012 JUL 21 15:20 124.3838459906 -167975.413 301.3537 35.0941 111.553 42.857 2012 JUL 21 15:30 124.3956433518 -168647.411 303.8792 35.1065 111.535 44.827 2012 JUL 21 15:40 124.4074888196 -169348.006 306.4047 35.1188 111.516 46.805 2012 JUL 21 15:50 124.4193843749 -170076.307 308.9302 35.1312 111.497 48.792 2012 JUL 21 16:00 124.4313319197 -170831.372 311.4557 35.1435 111.479 50.787 2012 JUL 21 16:10 124.4433333002 -171612.202 313.9813 35.1558 111.460 52.788 2012 JUL 21 16:20 124.4553902836 -172417.753 316.5069 35.1681 111.441 54.797 2012 JUL 21 16:30 124.4675045647 -173246.929 319.0325 35.1804 111.423 56.811 2012 JUL 21 16:40 124.4796777623 -174098.592 321.5582 35.1927 111.404 58.831 2012 JUL 21 16:50 124.4919114089 -174971.557 324.0838 35.2049 111.385 60.857 2012 JUL 21 17:00 124.5042069550 -175864.599 326.6096 35.2172 111.366 62.887
2004 EW9 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 183-610 | 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/2004EW9/2004EW9_planning.html