99942 Apophis 2013 Goldstone Radar Observations Planning
99942 Apophis is one of the most important near-Earth asteroids ever discovered. It will make a very close Earth approach on Friday, April 13, 2029 when it will pass within 0.1 lunar distances, which is only a few Earth radii above Earth's surface. This will be the closest approach by something this large currently known. Apophis was discovered in June of 2004, observed briefly, and then lost until it was serendipitously recovered in December of 2004. It was immediately evident that the asteroid would make an unusually close approach to Earth in 2029, and initial calcluations placed the probability of an impact as high as about 3%. Subsequent precovery optical observations showed that there was zero chance of impact in 2029. Radar observations at Arecibo in January, 2005 revealed a bias in the precovery optical observations and showed and that the approach in 2029 would be significantly closer than previously thought--only a few Earth radii--but still too distant for an impact. The 2029 approach will be close enough that terrestrial tides should alter the asteroid's spin state. There is still a tiny chance of an impact in 2036; the principal source of uncertainty is the acceleration due to the Yarkovsky effect, a non-gravitational effect that is a function of the asteroid's rotation period, pole direction, thermal properties, mass, shape, and dimensions. It's likely that radar astrometry in 2013 will shrink the uncertainties sufficiently to completely rule out an impact in the 2030s (Giorgini et al. 2008). For all these reasons scientific interest in Apophis is acute and it's very important to learn as much as we can about this object when it gets close enough for physical observations in late 2012 and early 2013. Apophis has been observed at a variety of optical wavelengths and some of its key physical properties have been estimated. Infrared radiometry by Delbo et al. (2007) suggests that the diameter is about 270 meters and that the optical albedo is about 0.3. Vis-IR spectroscopy reported by Binzel et al. (2009) places Apophis in the Sq-class. Photometry obtained by Behrend et al. (unpublished) revealed a slow rotation period of 30.4 hours and a large lightcurve amplitude of ~1.0 mag that suggests a very elongated shape. A sequence of radar ranging astrometry in 2005, 2013, and during the flyby in 2021, _may_ enable us to detect the acceleration due to the Yarkovsky effect and allow us to estimate the mass and bulk density. This isn't guaranteed, but we have a non-negligible chance. In addition, observations that provide precise constraints on the spin state could help reveal changes due to Earth tides following the flyby in 2029. Apophis will approach from the south and will become detectable at Goldstone in late November. Apophis will be a weak target at Goldstone and the SNRs will probably be sufficient for only CW observations and perhaps coarse-resolution ranging. We do not expect to obtain detailed delay-Doppler images in 2013. We are also planning to observe Apophis at Arecibo once it enters Arecibo's declination window in mid-February of 2013. Apophis will be observable at Arecibo after February 13. At that time Apophis will be well past the closest approach, but the SNRs at Arecibo should still be sufficient to obtain CW, ranging, and possibly 0.5 usec (75 meter) imaging observations. Due to the proximity of its orbit to Earth, Apophis is being considered as a potential target for both robotic and crewed spacecraft missions. Apophis has been classified as a "Potentially Hazardous Asteroid" (PHA) by the IAU's Minor Planet Center. Apophis is also on the NHATS list of potentially accessible NEAs for human missions.
Orbital and Physical Characteristics orbit type Aten semimajor axis 0.922 AU eccentricity 0.191 inclination 3.3 deg perihelion distance 0.746 AU aphelion distance 1.099 AU absolute magnitude (H) 19.7 diameter ~0.27 km Delbo et al. 2007 Icarus 188, 266-269. rotation period 30.4 h Behrend et al., website: http://obswww.unige.ch/~behrend/page5cou.html#099942 pole direction unknown lightcurve amplitude 0.95 mag Behrend et al., website: http://obswww.unige.ch/~behrend/page5cou.html#099942 spectral class Sq Binzel et al. 2009, Icarus 200, 480-485. optical albedo 0.33 Delbo et al. 2007 Icarus 188, 266-269. Last update: 2013 February 28
M.P.E.C. 2004-Y25 Issued 2004 Dec. 20, 06:22 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Supported in part by the Brinson Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2004 MN4
Additional Observations:
K04M04N C2004 12 18.42318 23 12 07.07 -36 37 10.2 18.7 R EY025E12
K04M04N C2004 12 18.43083 23 12 13.22 -36 36 52.6 18.1 R EY025E12
K04M04N C2004 12 18.43846 23 12 19.16 -36 36 34.0 19.1 R EY025E12
K04M04N C2004 12 18.44610 23 12 25.19 -36 36 14.7 18.2 R EY025E12
K04M04N C2004 12 18.45550 23 12 32.70 -36 35 52.1 18.6 R EY025E12
K04M04N C2004 12 18.45631 23 12 33.34 -36 35 50.2 18.3 R EY025E12
K04M04N C2004 12 18.45713 23 12 33.99 -36 35 48.0 18.0 R EY025E12
K04M04N C2004 12 18.45793 23 12 34.64 -36 35 45.6 18.7 R EY025E12
K04M04N C2004 12 18.49052 23 13 00.72 -36 34 24.5 18.5 R EY025E12
K04M04N C2004 12 18.49133 23 13 01.34 -36 34 22.1 18.0 R EY025E12
K04M04N C2004 12 18.49214 23 13 02.02 -36 34 20.7 18.4 R EY025E12
K04M04N C2004 12 18.49295 23 13 02.61 -36 34 18.6 18.0 R EY025E12
K04M04N C2004 12 19.07902 23 21 05.63 -36 12 57.6 18.7 R EY025854
K04M04N C2004 12 19.08384 23 21 09.30 -36 12 42.9 18.8 R EY025854
K04M04N C2004 12 19.08868 23 21 13.23 -36 12 31.5 18.6 R EY025854
K04M04N C2004 12 19.09354 23 21 16.88 -36 12 20.1 18.3 R EY025854
K04M04N C2004 12 19.09850 23 21 20.79 -36 12 07.1 18.7 R EY025854
K04M04N C2004 12 19.45943 23 26 11.18 -35 54 52.0 16.7 R EY025474
K04M04N C2004 12 19.46059 23 26 12.10 -35 54 48.7 16.9 R EY025474
K04M04N C2004 12 19.46140 23 26 12.73 -35 54 46.6 16.5 R EY025474
K04M04N C2004 12 19.46464 23 26 15.34 -35 54 37.2 16.6 R EY025474
K04M04N 5C2004 12 20.06921 23 34 27.46 -35 29 30.2 18.5 R EY025673
K04M04N 5C2004 12 20.07691 23 34 33.36 -35 29 07.9 EY025673
K04M04N 5C2004 12 20.08287 23 34 37.90 -35 28 51.3 EY025673
K04M04N 5C2004 12 20.09000 23 34 43.37 -35 28 30.6 EY025673
Observer details:
474 Mount John Observatory, Lake Tekapo. Observer A. C. Gilmore. Measurer
P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.6-m
reflector + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
E12 Siding Spring Survey. Observer G. J. Garradd. Measurers E. C. Beshore,
C. M. Casey, E. J. Christensen, G. J. Garradd, R. E. Hill, S. M. Larson,
R. H. McNaught. 0.5-m Uppsala Schmidt + CCD.
Orbital elements:
2004 MN4 PHA 0.002A
Epoch 2005 Jan. 30.0 TT = JDT 2453400.5 MPC
M 137.33718 (2000.0) P Q
n 1.11290657 Peri. 126.27521 +0.87243599 +0.48813494
a 0.9222109 Node 204.53386 -0.46493852 +0.81377716
e 0.1906904 Incl. 3.32419 -0.15062407 +0.31542195
P 0.89 H 19.3 G 0.15 U 7
Residuals in seconds of arc
040619 695 0.2- 0.2- 041218 E12 0.2- 0.1- 041219 854 0.1- 0.2-
040619 695 1.6- 0.6+ 041218 E12 0.2- 0.0 041219 474 0.5+ 0.4-
040619 695 0.3+ 0.1+ 041218 E12 0.0 0.4+ 041219 474 0.4+ 0.4-
040620 695 1.8+ 0.3- 041218 E12 0.4+ 0.2+ 041219 474 0.2+ 0.6-
040620 695 0.5- 0.2- 041218 E12 0.1+ 0.6+ 041219 474 0.4+ 0.3-
040620 695 0.2+ 0.7+ 041218 E12 0.4+ 0.1- 041220 673 0.1- 0.7-
041218 E12 0.4- 0.9+ 041218 E12 0.3- 0.0 041220 673 0.2+ 0.1-
041218 E12 0.9+ 0.1- 041219 854 0.5- 0.8- 041220 673 0.1+ 0.4-
041218 E12 0.3- 0.1- 041219 854 1.4- 1.6+ 041220 673 0.5+ 0.0
041218 E12 0.6- 0.5+ 041219 854 0.7+ 0.6+
041218 E12 0.1- 0.0 041219 854 0.8- 0.4-
Ephemeris:
2004 MN4 a,e,i = 0.92, 0.19, 3 q = 0.7464
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2004 12 21 23 46.77 -34 42.3 0.096 0.963 74.8 99.6 17.7
2004 12 31 01 36.86 -23 29.5 0.105 0.994 92.6 81.4 17.2
2005 01 10 02 46.10 -12 17.8 0.128 1.021 103.4 69.6 17.3
2005 01 20 03 31.71 -03 52.6 0.160 1.044 108.0 63.6 17.7
2005 01 30 04 05.99 +02 14.5 0.196 1.064 108.7 61.3 18.1
2005 02 09 04 34.96 +06 49.3 0.234 1.079 107.2 60.8 18.5
2005 02 19 05 01.72 +10 20.8 0.274 1.090 104.6 61.3 18.9
2005 03 01 05 27.60 +13 04.4 0.313 1.096 101.4 62.4 19.2
2005 03 11 05 53.28 +15 10.5 0.352 1.098 97.8 63.7 19.5
2005 03 21 06 19.18 +16 44.6 0.388 1.095 94.2 65.1 19.7
2005 03 31 06 45.31 +17 50.6 0.420 1.087 90.5 66.8 20.0
2005 04 10 07 11.66 +18 31.6 0.448 1.075 86.8 68.5 20.1
2005 04 20 07 38.20 +18 49.9 0.471 1.058 83.2 70.5 20.3
2005 04 30 08 04.68 +18 48.3 0.486 1.037 79.7 72.8 20.4
2005 05 10 08 30.94 +18 29.9 0.495 1.012 76.1 75.6 20.4
2005 05 20 08 56.73 +17 58.1 0.495 0.984 72.5 78.8 20.5
2005 05 30 09 21.62 +17 18.2 0.486 0.952 68.8 82.8 20.5
2005 06 09 09 45.06 +16 36.7 0.467 0.919 64.8 87.8 20.6
2005 06 19 10 06.17 +16 02.9 0.440 0.884 60.2 94.2 20.6
Kyle E. Smalley (C) Copyright 2004 MPC M.P.E.C. 2004-Y25
Target Name: Apophis
D = 270 meters Estimated from infrared radiometry
Period = 30.4 h Estimated from lightcurves
OC albedo = 0.3 Estimated from S-band radar cross sections obtained in 2005 and assuming D = 0.27 km
Tsys = 17 K
Ptx = 450 kW
Equatorial view
# SNR/ SNR/
week DOY start date window RA, dec dist runs day run
47 327 2012 Nov 22 13:59-19:10 194, -24 0.119 77 13 2
47 328 2012 Nov 23 13:51-19:00 192, -24 0.118 77 13 2
47 329 2012 Nov 24 13:43-18:50 191, -24 0.118 77 13 2
47 330 2012 Nov 25 13:36-18:41 190, -24 0.117 77 13 2
48 331 2012 Nov 26 13:28-18:31 189, -25 0.116 77 14 2
48 332 2012 Nov 27 13:21-18:22 188, -25 0.116 77 14 2
48 333 2012 Nov 28 13:13-18:12 187, -25 0.115 77 14 2
48 334 2012 Nov 29 13:06-18:03 186, -25 0.114 77 14 2
48 335 2012 Nov 30 12:58-17:54 184, -25 0.114 77 15 2
48 336 2012 Dec 01 12:51-17:45 183, -25 0.113 77 15 2
48 337 2012 Dec 02 12:44-17:35 182, -25 0.113 76 15 2
49 338 2012 Dec 03 12:37-17:26 181, -26 0.112 76 15 2
49 339 2012 Dec 04 12:30-17:17 180, -26 0.112 76 15 2
49 340 2012 Dec 05 12:22-17:08 179, -26 0.111 76 16 2
49 341 2012 Dec 06 12:15-16:59 178, -26 0.111 76 16 2
49 342 2012 Dec 07 12:08-16:50 177, -26 0.110 76 16 2
49 343 2012 Dec 08 12:01-16:42 176, -26 0.110 75 16 2
49 344 2012 Dec 09 11:54-16:33 175, -26 0.109 75 16 2
50 345 2012 Dec 10 11:47-16:24 174, -26 0.109 75 17 2
50 346 2012 Dec 11 11:40-16:15 173, -26 0.108 75 17 2
50 347 2012 Dec 12 11:33-16:06 172, -27 0.108 75 17 2
50 348 2012 Dec 13 11:26-15:57 171, -27 0.107 74 17 2
50 349 2012 Dec 14 11:19-15:48 170, -27 0.107 74 17 2
50 350 2012 Dec 15 11:12-15:40 169, -27 0.106 74 18 2
50 351 2012 Dec 16 11:04-15:31 168, -27 0.106 74 18 2
51 352 2012 Dec 17 10:57-15:22 167, -27 0.105 74 18 2
51 353 2012 Dec 18 10:50-15:13 166, -27 0.105 74 18 2
51 354 2012 Dec 19 10:42-15:04 165, -27 0.104 74 19 2
51 355 2012 Dec 20 10:34-14:56 164, -27 0.104 74 19 2
51 356 2012 Dec 21 10:27-14:47 163, -27 0.103 74 19 2 Overlaps time scheduled for Toutatis from 1030-1155; we have requested transmit authorization
51 357 2012 Dec 22 10:18-14:38 162, -27 0.103 74 20 2 Overlaps time scheduled for Toutatis from 1020-1205; we have requested transmit authorization
51 358 2012 Dec 23 10:10-14:29 160, -27 0.102 75 20 2
52 359 2012 Dec 24 10:02-14:21 159, -27 0.102 75 21 2
52 360 2012 Dec 25 09:53-14:12 158, -27 0.101 75 21 3
52 361 2012 Dec 26 09:45-14:03 157, -27 0.101 76 21 3
52 362 2012 Dec 27 09:36-13:55 156, -27 0.100 76 22 3
52 363 2012 Dec 28 09:26-13:46 154, -27 0.100 77 22 3
52 364 2012 Dec 29 09:17-13:38 153, -27 0.099 77 23 3
52 365 2012 Dec 30 09:07-13:30 152, -27 0.099 78 23 3
1 366 2012 Dec 31 08:57-13:22 151, -27 0.099 79 24 3
1 1 2013 Jan 01 08:46-13:14 149, -27 0.098 75 25 3
1 2 2013 Jan 02 08:36-13:06 148, -27 0.098 76 25 3
1 3 2013 Jan 03 08:25-12:58 147, -27 0.098 77 26 3
1 4 2013 Jan 04 08:14-12:50 145, -26 0.097 78 26 3
1 5 2013 Jan 05 08:02-12:43 144, -26 0.097 80 27 3
1 6 2013 Jan 06 07:50-12:35 142, -26 0.097 81 27 3
2 7 2013 Jan 07 07:38-12:28 141, -26 0.097 82 28 3
2 8 2013 Jan 08 07:26-12:21 139, -25 0.097 84 28 3
2 9 2013 Jan 09 07:14-12:14 138, -25 0.097 86 29 3
2 10 2013 Jan 10 07:01-12:07 136, -24 0.097 87 29 3
2 11 2013 Jan 11 06:48-12:00 135, -24 0.097 89 30 3
2 12 2013 Jan 12 06:35-11:54 134, -23 0.097 91 30 3
2 13 2013 Jan 13 06:22-11:47 132, -23 0.097 92 30 3
3 14 2013 Jan 14 06:09-11:41 131, -22 0.097 94 30 3
3 15 2013 Jan 15 05:56-11:35 129, -22 0.098 96 31 3
3 16 2013 Jan 16 05:43-11:29 128, -21 0.098 97 30 3
3 17 2013 Jan 17 05:30-11:23 126, -20 0.099 99 30 3
3 18 2013 Jan 18 05:17-11:17 125, -20 0.100 100 30 3
3 19 2013 Jan 19 05:04-11:12 124, -19 0.100 102 30 3
3 20 2013 Jan 20 04:51-11:06 122, -18 0.101 103 29 3
4 21 2013 Jan 21 04:38-11:01 121, -18 0.102 104 29 3
4 22 2013 Jan 22 04:25-10:56 120, -17 0.103 105 28 3
4 23 2013 Jan 23 04:13-10:51 119, -16 0.104 106 28 3
4 24 2013 Jan 24 04:01-10:46 117, -15 0.105 107 27 3
4 25 2013 Jan 25 03:49-10:41 116, -15 0.106 108 26 3
4 26 2013 Jan 26 03:37-10:36 115, -14 0.108 108 25 3
4 27 2013 Jan 27 03:26-10:32 114, -13 0.109 108 24 3
5 28 2013 Jan 28 03:15-10:27 113, -12 0.111 109 23 2
5 29 2013 Jan 29 03:04-10:23 112, -11 0.112 109 22 2
5 30 2013 Jan 30 02:53-10:18 111, -11 0.114 109 21 2
5 31 2013 Jan 31 02:42-10:14 111, -10 0.116 109 20 2
5 32 2013 Feb 01 02:32-10:10 110, -9 0.118 109 19 2
5 33 2013 Feb 02 02:22-10:06 109, -8 0.119 108 18 2
5 34 2013 Feb 03 02:13-10:02 108, -7 0.121 88 16 2
6 35 2013 Feb 04 02:03-09:58 108, -7 0.124 88 15 2
6 36 2013 Feb 05 01:54-09:54 107, -6 0.126 88 14 2
6 37 2013 Feb 06 01:45-09:50 106, -5 0.128 87 13 2
Goldstone SNRs assume Ptx = 450 kW
Arecibo SNRs:
Assumptions: Ptx = 900 kW, Sensitivity = 10 K/Jy, Tsys = 25 K
# SNR/ SNR/
DOY date window RA, dec dist runs date run
---------------------------------------------------------------------------
043 2013 Feb 12 01:42-02:02 103, -1 0.142 3 26 15
044 2013 Feb 13 01:25-02:09 103, -1 0.145 7 40 16
045 2013 Feb 14 01:12-02:12 103, 0 0.147 9 45 16
046 2013 Feb 15 01:02-02:12 103, 1 0.150 11 49 16
047 2013 Feb 16 00:52-02:12 102, 1 0.153 12 50 16
048 2013 Feb 17 00:43-02:11 102, 2 0.155 13 51 16
049 2013 Feb 18 00:35-02:09 102, 2 0.158 14 52 15
050 2013 Feb 19 00:28-02:08 102, 3 0.161 15 52 15
051 2013 Feb 20 00:21-02:06 102, 3 0.164 15 51 15
052 2013 Feb 21 00:14-02:04 101, 4 0.167 16 50 14
053 2013 Feb 22 00:07-02:02 101, 4 0.170 16 48 13
054 2013 Feb 23 00:01-01:59 101, 5 0.173 17 46 12
055 2013 Feb 23 23:55-01:57 101, 5 0.176 17 44 12
056 2013 Feb 24 23:50-01:55 101, 6 0.179 17 42 11
057 2013 Feb 25 23:44-01:52 101, 6 0.182 17 40 10
058 2013 Feb 26 23:39-01:50 101, 7 0.185 17 38 10
059 2013 Feb 27 23:34-01:47 101, 7 0.188 17 36 9
060 2013 Feb 28 23:29-01:45 101, 8 0.191 17 34 9
061 2013 Mar 01 23:25-01:42 101, 8 0.194 18 33 8
062 2013 Mar 02 23:20-01:40 102, 8 0.197 18 31 8
063 2013 Mar 03 23:16-01:37 102, 9 0.200 18 29 7
064 2013 Mar 04 23:11-01:35 102, 9 0.203 18 28 7
065 2013 Mar 05 23:07-01:32 102, 10 0.206 18 27 7
066 2013 Mar 06 23:03-01:30 102, 10 0.209 17 25 6
067 2013 Mar 07 22:59-01:27 102, 10 0.212 17 24 6
068 2013 Mar 08 22:55-01:25 102, 11 0.215 17 23 6
069 2013 Mar 09 22:52-01:22 103, 11 0.218 17 21 5
070 2013 Mar 10 22:48-01:20 103, 11 0.221 17 20 5
071 2013 Mar 11 22:45-01:17 103, 12 0.224 17 20 5
072 2013 Mar 12 22:41-01:15 103, 12 0.227 17 19 5
073 2013 Mar 13 22:38-01:12 104, 12 0.230 17 18 4
074 2013 Mar 14 22:35-01:10 104, 12 0.233 17 17 4
075 2013 Mar 15 22:31-01:08 104, 13 0.236 17 16 4
076 2013 Mar 16 22:28-01:05 105, 13 0.239 17 16 4
077 2013 Mar 17 22:25-01:03 105, 13 0.242 17 15 4
078 2013 Mar 18 22:22-01:01 105, 13 0.244 16 14 4
079 2013 Mar 19 22:19-00:58 105, 14 0.247 16 13 3
080 2013 Mar 20 22:16-00:56 106, 14 0.250 16 13 3
081 2013 Mar 21 22:13-00:54 106, 14 0.253 16 12 3
082 2013 Mar 22 22:11-00:51 106, 14 0.256 16 12 3
Apophis is too far south for Arecibo to track prior to February 12.
Goldstone tracks:
*DAY START BOT EOT END FACILITY USER ACTIVITY
003 0655 0825 1125 1155 DSS-14 GSSR AST APOPHIS
005 0635 0805 1140 1210 DSS-14 GSSR AST APOPHIS
006 0200 0330 1110 1140 DSS-14 GSSR AST AY1/APOPHIS
008 0215 0345 1105 1135 DSS-14 GSSR AST AY1/APOPHIS
009 0635 0805 1100 1130 DSS-14 GSSR AST APOPHIS
010 0535 0705 1055 1125 DSS-14 GSSR AST APOPHIS
011 0520 0650 1055 1125 DSS-14 GSSR AST APOPHIS
014 0440 0610 1040 1110 DSS-14 GSSR AST APOPHIS
015 0430 0600 0845 0915 DSS-14 GSSR AST APOPHIS
016 0440 0610 1030 1100 DSS-14 GSSR AST APOPHIS
017 0400 0530 1030 1100 DSS-14 GSSR AST APOPHIS
UT UT PST Duration RTT SNR/
DOY Date TX Window TX Window hh:mm (sec) Run
--- ---- --------- --------- --------- ----- ---
356 Dec 21 Apophis 1030-1155 0230-0355 Dec 21 1:20 103 2 Overlaps Toutatis
357 Dec 22 Apophis 1020-1205 0220-0405 Dec 22 1:35 103 2 Overlaps Toutatis
3 Jan 03 Apophis 0825 1125 0025-0325 Jan 3 3:00 98 3
5 Jan 05 Apophis 0805 1140 0005-0340 Jan 5 3:35 97 3
6 Jan 06 2002 AY1 0200 0940 1800-0140 Jan 5-6 7:40 42 10 0200 is the start of precal
Apophis 0750 1110 2350-0320 Jan 5-6 3:20 97 3 We'll switch to Apophis to start by 0750
8 Jan 08 2002 AY1 0230 0715 1830-2315 Jan 7 4:45 38 10 Precal starts at 0215
Apophis 0730 1105 2330-0305 Jan 7-8 3:35 97 3 Note the 15 minute gap between 2002 AY1 and Apophis
9 Jan 09 Apophis 0715 1100 2315-0300 Jan 8-9 3:45 97 3 This would start 40 minutes into precal
10 Jan 10 Apophis 0705 1055 2305-0255 Jan 9-10 3:50 97 3
11 Jan 11 Apophis 0650 1055 2250-0255 Jan 10-11 4:05 97 3 This would start 5 minutes before the end of precal
14 Jan 14 Apophis 0610 1040 2210-0240 Jan 13-14 4:30 97 3 BOT is at the end of precal
15 Jan 15 Apophis 0600 0845 2200-0045 Jan 14-15 2:45 98 3 BOT is at the end of precal
16 Jan 16 Apophis 0545 1030 2145-0230 Jan 15-16 4:45 98 3 BOT is 65 minutes into precal
17 Jan 17 Apophis 0530 1030 2130-0230 Jan 16-17 5:00 98 3 BOT is at the end of precal
Scheduled Arecibo tracks:
UT UT AST PST Duration Round-trip SNR/
DOY Date TX Window TX Window TX Window hh:mm time (sec) Run
44 Feb 13 0125-0209 2125-2209 Feb 12 1725-1809 Feb 12 0:44 145 15 Cancelled due to equipment problems
45 Feb 14 0112-0212 2112-2212 Feb 13 1712-1812 Feb 13 1:00 147 16 Got one CW run before system quit
46 Feb 15 0102-0212 2102-2212 Feb 14 1702-1812 Feb 14 1:10 150 16 Cancelled
47 Feb 16 0052-0212 2052-2212 Feb 15 1652-1812 Feb 15 1:20 153 16 Cancelled
48 Feb 17 0043-0211 2043-2211 Feb 16 1643-1811 Feb 16 1:28 155 16 Cancelled
49 Feb 18 0035-0209 2035-2209 Feb 17 1635-1809 Feb 17 1:34 158 15 Successful
50 Feb 19 0028-0208 2028-2208 Feb 18 1628-1808 Feb 18 1:40 161 15 Successful
51 Feb 20 0021-0206 2021-2206 Feb 19 1621-1806 Feb 19 1:45 164 15 Successful
52 Feb 21 0014-0204 2014-2204 Feb 20 1614-1804 Feb 20 1:50 167 14 Successful
53 Feb 22 0007-0202 2007-2202 Feb 21 1607-1802 Feb 21 1:55 170 13 Cancelled
PDT window
74 Mar 15-16 2231-0108 1831-2108 Mar 15 1531-1708 Mar 15 2:37 236 4
75 Mar 16-17 2228-0105 1828-2105 Mar 16 1528-1705 Mar 16 2:37 239 4
Using the echoes obtained at Goldstone as calibrators, it's likely that the SNRs at Arecibo
could be sufficiently strong for imaging at 30 meter resolution.
From Jon Giorgini, 2013 Jan. 11: Including the latest optical measurements (1655 spanning 2004-Mar-15 to 2013-Jan-13) and the radar delay-Doppler (2005-2013), 99942 Apophis orbit solution #162 was computed. Formal 3-sigma X-band uncertainties: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2013-Jan-10 00:00 0.130 0.08 0.000002 2013-Jan-11 00:00 0.130 0.08 0.000003 2013-Jan-12 00:00 0.130 0.09 0.000004 2013-Jan-13 00:00 0.129 0.09 0.000004 2013-Jan-14 00:00 0.129 0.10 0.000005 2013-Jan-15 00:00 0.129 0.10 0.000006 2013-Jan-16 00:00 0.128 0.11 0.000007 2013-Jan-17 00:00 0.128 0.11 0.000008 2013-Jan-18 00:00 0.127 0.12 0.000009 - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, 2013 Jan. 1: Using the revised (zero correction) Doppler, delay, and existing optical astrometry (1319 measurements, 2004-Mar-15 to 2012-Dec-13), 99942 Apophis orbit solution #152 was estimated. Formal 3-sigma X-band uncertainties: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2013-Jan-03 00:00 0.159 0.14 0.000016 2013-Jan-05 00:00 0.160 0.14 0.000018 2013-Jan-07 00:00 0.162 0.15 0.000021 2013-Jan-09 00:00 0.164 0.16 0.000023 2013-Jan-11 00:00 0.166 0.16 0.000026 2013-Jan-13 00:00 0.167 0.17 0.000029 2013-Jan-15 00:00 0.169 0.18 0.000032 2013-Jan-17 00:00 0.170 0.19 0.000035 - - - - - - - - - - - - - - - - - - - - From Jon Giorgini, Dec 17, solution #146 Based on 1319 optical measurements (2004-Mar-15 to 2012-Dec-13) and 2 delay and 5 Dopplers from Arecibo, 99942 Apophis orbit solution #146 was estimated and OSOD w/nominal predicts established on aardvark in the /a99942 sub-directory. Formal 3-sigma X-band uncertainties for .s146: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Dec-20 00:00 0.701 0.37 0.000614 2012-Dec-22 00:00 0.723 0.51 0.000605 2012-Dec-24 00:00 0.755 0.64 0.000593 2012-Dec-26 00:00 0.795 0.78 0.000578 2012-Dec-28 00:00 0.842 0.92 0.000560 2012-Dec-30 00:00 0.895 1.07 0.000539 2013-Jan-01 00:00 0.951 1.22 0.000515 2013-Jan-03 00:00 1.009 1.37 0.000487 2013-Jan-05 00:00 1.066 1.52 0.000457 2013-Jan-07 00:00 1.122 1.67 0.000424 2013-Jan-09 00:00 1.174 1.81 0.000387 2013-Jan-11 00:00 1.220 1.94 0.000348 2013-Jan-13 00:00 1.258 2.05 0.000307 2013-Jan-15 00:00 1.286 2.14 0.000264 2013-Jan-17 00:00 1.303 2.21 0.000220 - - - - - - - - - - - - - - - - - - - - From Horizons, 2012 July 02, solution 144, #obs = 640 (2004-2008): Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Dec-20 00:00 *m 164.15011 -27.21456 0.10420124302980 1.867 0.26 0.96 0.001634 2012-Dec-21 00:00 *m 163.05459 -27.27418 0.10368693455103 1.894 0.31 1.14 0.001622 2012-Dec-22 00:00 *m 161.94236 -27.32300 0.10317357814308 1.927 0.36 1.32 0.001609 2012-Dec-23 00:00 *m 160.81221 -27.35991 0.10266267415181 1.966 0.41 1.50 0.001594 2012-Dec-24 00:00 *m 159.66303 -27.38376 0.10215589768654 2.011 0.46 1.69 0.001577 2012-Dec-25 00:00 *m 158.49380 -27.39332 0.10165510334971 2.061 0.51 1.87 0.001558 2012-Dec-26 00:00 *m 157.30362 -27.38730 0.10116232851788 2.116 0.57 2.06 0.001537 2012-Dec-27 00:00 *m 156.09174 -27.36436 0.10067979608148 2.176 0.62 2.25 0.001514 2012-Dec-28 00:00 * 154.85755 -27.32309 0.10020991732879 2.240 0.67 2.44 0.001489 2012-Dec-29 00:00 * 153.60060 -27.26205 0.09975529524568 2.307 0.72 2.63 0.001462 2012-Dec-30 00:00 * 152.32067 -27.17975 0.09931872802367 2.377 0.78 2.82 0.001433 2012-Dec-31 00:00 * 151.01771 -27.07466 0.09890321215227 2.450 0.83 3.02 0.001402 2013-Jan-01 00:00 * 149.69194 -26.94526 0.09851194422469 2.524 0.88 3.22 0.001368 2013-Jan-02 00:00 * 148.34382 -26.79000 0.09814832055287 2.600 0.94 3.41 0.001333 2013-Jan-03 00:00 * 146.97411 -26.60734 0.09781593380945 2.676 0.99 3.61 0.001296 2013-Jan-04 00:00 * 145.58386 -26.39582 0.09751856602498 2.752 1.05 3.81 0.001257 2013-Jan-05 00:00 * 144.17448 -26.15402 0.09726017714637 2.827 1.10 4.01 0.001215 2013-Jan-06 00:00 * 142.74770 -25.88061 0.09704488780553 2.902 1.16 4.21 0.001172 2013-Jan-07 00:00 * 141.30563 -25.57442 0.09687695392447 2.974 1.21 4.40 0.001126 2013-Jan-08 00:00 * 139.85074 -25.23444 0.09676072961668 3.043 1.26 4.59 0.001079 2013-Jan-09 00:00 * 138.38591 -24.85988 0.09670061441659 3.109 1.31 4.77 0.001030 2013-Jan-10 00:00 * 136.91434 -24.45022 0.09670098251022 3.172 1.36 4.95 0.000979 2013-Jan-11 00:00 *m 135.43959 -24.00526 0.09676609629680 3.229 1.41 5.11 0.000926 2013-Jan-12 00:00 *m 133.96547 -23.52516 0.09690001330200 3.281 1.45 5.27 0.000872 2013-Jan-13 00:00 *m 132.49599 -23.01041 0.09710650056848 3.327 1.49 5.41 0.000816 2013-Jan-14 00:00 *m 131.03524 -22.46192 0.09738897002893 3.367 1.52 5.53 0.000759 2013-Jan-15 00:00 *m 129.58728 -21.88092 0.09775044140189 3.400 1.55 5.65 0.000701 2013-Jan-16 00:00 *m 128.15609 -21.26898 0.09819353005075 3.426 1.58 5.74 0.000642 2013-Jan-17 00:00 *m 126.74549 -20.62797 0.09872045137411 3.444 1.60 5.82 0.000582 2013-Jan-18 00:00 *m 125.35906 -19.95997 0.09933303270292 3.455 1.62 5.88 0.000522 2013-Jan-19 00:00 *m 124.00014 -19.26729 0.10003272663924 3.459 1.63 5.92 0.000461 2013-Jan-20 00:00 *m 122.67175 -18.55237 0.10082062344329 3.454 1.63 5.94 0.000401 ============================================================================ Coordinates, Geocentric Distances, Apparent Magnitudes, Solar Elongations, Elongations from the Moon, and Moon Illumination: (JPL/Horizons solution 144, 2012 July 2) Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta APmag S-brt S-O-T /r T-O-M/Illu% ...five-day intervals... 2012-Dec-03 00:00 181.73280 -25.34422 0.11250086165662 18.96 5.02 61.4317 /L 72.8/ 83.6 2012-Dec-08 00:00 176.54033 -25.97807 0.11009015146910 18.40 4.75 70.3583 /L 21.4/ 35.7 2012-Dec-13 00:00 171.47571 -26.57077 0.10769637705663 17.96 4.55 78.9910 /L 75.3/ 0.2 2012-Dec-18 00:00 166.30218 -27.06336 0.10518662937329 17.59 4.39 87.5032 /L 142.5/ 27.6 2012-Dec-23 00:00 160.81447 -27.35663 0.10262064372196 17.26 4.25 96.0350 /L 132.8/ 76.0 2012-Dec-28 00:00 154.85561 -27.31973 0.10016784213022 16.97 4.13 104.6766 /L 77.4/ 99.8 ...two-day intervals... 2012-Dec-20 00:00 164.15466 -27.21111 0.10415976293917 17.46 4.33 90.9074 /L 153.4/ 47.9 2012-Dec-22 00:00 161.94540 -27.31968 0.10313169011410 17.33 4.28 94.3220 /L 142.5/ 67.4 2012-Dec-24 00:00 159.66448 -27.38050 0.10211376750999 17.20 4.23 97.7527 /L 122.2/ 83.6 2012-Dec-26 00:00 157.30341 -27.38403 0.10112013214504 17.08 4.17 101.2035 /L 100.0/ 94.8 2012-Dec-28 00:00 154.85561 -27.31973 0.10016784213022 16.97 4.13 104.6766 /L 77.4/ 99.8 2012-Dec-30 00:00 152.31695 -27.17620 0.09927697376822 16.86 4.08 108.1715 /L 55.6/ 97.6 2013-Jan-01 00:00 149.68641 -26.94144 0.09847072360940 16.75 4.03 111.6843 /L 37.6/ 88.2 2013-Jan-03 00:00 146.96677 -26.60314 0.09777547231882 16.65 3.98 115.2066 /L 32.9/ 72.4 2013-Jan-05 00:00 144.16536 -26.14933 0.09722071196466 16.56 3.93 118.7244 /L 47.2/ 51.9 2013-Jan-07 00:00 141.29478 -25.56915 0.09683873158707 16.47 3.89 122.2167 /L 70.9/ 30.1 * 2013-Jan-09 00:00 138.37344 -24.85393 0.09666388688171 16.39 3.84 125.6535 /L 97.8/ 11.4 * 2013-Jan-11 00:00 135.42564 -23.99858 0.09673111521238 16.31 3.79 128.9951 /L 124.3/ 1.1 * 2013-Jan-13 00:00 132.48075 -23.00295 0.09707350988001 16.25 3.74 132.1904 /L 143.7/ 2.2 * 2013-Jan-15 00:00 129.57094 -21.87266 0.09771966909684 16.20 3.70 135.1784 /L 142.4/ 13.4 * 2013-Jan-17 00:00 126.72829 -20.61895 0.09869210153960 16.16 3.66 137.8904 /L 124.1/ 30.8 * 2013-Jan-19 00:00 123.98232 -19.25755 0.10000697276297 16.14 3.62 140.2542 /L 101.5/ 50.2 * 2013-Jan-21 00:00 121.35844 -17.80744 0.10167444274340 16.14 3.60 142.2003 /T 78.6/ 68.8 2013-Jan-23 00:00 118.87723 -16.28937 0.10369906405449 16.15 3.57 143.6705 /T 56.4/ 84.5 2013-Jan-25 00:00 116.55409 -14.72459 0.10608024190531 16.18 3.56 144.6265 /T 37.4/ 95.4 2013-Jan-27 00:00 114.39936 -13.13363 0.10881289476241 16.23 3.56 145.0583 /T 29.8/ 99.8 2013-Jan-29 00:00 112.41881 -11.53531 0.11188832712502 16.30 3.56 144.9861 /T 42.0/ 96.5 2013-Jan-31 00:00 110.61443 -9.94613 0.11529515289218 16.38 3.58 144.4575 /T 64.2/ 85.3 2013-Feb-02 00:00 108.98530 -8.38000 0.11902002736104 16.47 3.60 143.5385 /T 89.7/ 67.3 2013-Feb-04 00:00 107.52852 -6.84827 0.12304801734387 16.57 3.62 142.3029 /T 116.3/ 45.4 * 2013-Feb-06 00:00 106.23984 -5.35993 0.12736257051086 16.68 3.65 140.8239 /T 142.1/ 23.7 * 2013-Feb-08 00:00 105.11407 -3.92195 0.13194514743490 16.80 3.68 139.1679 /T 157.7/ 7.3 * 2013-Feb-10 00:00 104.14515 -2.53947 0.13677478190962 16.92 3.71 137.3913 /T 143.7/ 0.3 * 2013-Feb-12 00:00 103.32605 -1.21599 0.14182812925068 17.04 3.74 135.5397 /T 118.6/ 3.8 * 2013-Feb-14 00:00 102.64867 0.04656 0.14708036738420 17.16 3.77 133.6485 /T 92.9/ 15.8 * 2013-Feb-16 00:00 102.10413 1.24768 0.15250652091800 17.28 3.80 131.7438 /T 68.4/ 32.7 * 2013-Feb-18 00:00 101.68323 2.38803 0.15808247171473 17.40 3.83 129.8447 /T 45.1/ 51.5 2013-Feb-20 00:00 101.37687 3.46911 0.16378543021789 17.52 3.86 127.9644 /T 23.9/ 69.8 2013-Feb-22 00:00 101.17624 4.49302 0.16959409717950 17.63 3.89 126.1118 /T 15.6/ 85.4 2013-Feb-24 00:00 101.07300 5.46220 0.17548877435289 17.74 3.92 124.2928 /T 33.5/ 96.2 2013-Feb-26 00:00 101.05935 6.37932 0.18145151442380 17.85 3.94 122.5107 /T 57.7/ 99.8 2013-Feb-28 00:00 101.12820 7.24709 0.18746620694984 17.96 3.96 120.7674 /T 83.8/ 94.6 2013-Mar-02 00:00 101.27325 8.06819 0.19351837837180 18.06 3.99 119.0637 /T 110.8/ 80.7 2013-Mar-04 00:00 101.48907 8.84514 0.19959458175567 18.16 4.01 117.3998 /T 138.1/ 60.4 2013-Mar-06 00:00 101.77107 9.58025 0.20568153090066 18.26 4.03 115.7759 /T 164.3/ 37.8 2013-Mar-08 00:00 102.11522 10.27559 0.21176529958686 18.35 4.05 114.1918 /T 162.5/ 17.6 2013-Mar-10 00:00 102.51786 10.93305 0.21783085658628 18.44 4.06 112.6472 /T 136.4/ 4.2 2013-Mar-12 00:00 102.97541 11.55443 0.22386211124829 18.53 4.08 111.1413 /T 109.8/ 0.2 2013-Mar-14 00:00 103.48422 12.14142 0.22984247504884 18.61 4.10 109.6728 /T 84.2/ 5.3 2013-Mar-16 00:00 104.04055 12.69573 0.23575563754924 18.69 4.11 108.2400 /T 59.8/ 17.5 2013-Mar-18 00:00 104.64066 13.21901 0.24158613989050 18.77 4.13 106.8410 /T 36.4/ 34.1 2013-Mar-20 00:00 105.28094 13.71288 0.24731959466750 18.85 4.14 105.4734 /T 13.7/ 52.7 2013-Mar-22 00:00 105.95792 14.17890 0.25294270115785 18.92 4.15 104.1352 /T 11.2/ 71.2 * = good dates for photometry and other optical observations
Apophis is a slow rotator with a period of 30.4 h and a diameter of about 0.27 km,
so if the view is equatorial, we should see a bandwidth of about 0.9 Hz. The lightcurve
amplitude indicates that Apophis is elongated so the bandwidth should vary considerably
as the asteroid spins. Due to the slow rotation period and the short duration of most of
the Goldstone tracks, we may not see the bandwidth change much during an individual track.
On January 8 we're going to do CW for the entire track.
CW setup:
---------------------------------------------------------------------------
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: 4
Dwell 20 seconds
Bandwidth: 4000 Hz
Sampling interval: 2500 x 0.1 usec
VME FFT for PSD files: 8192 for 0.49 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)
-------------------------------------------------------------------------
255 x 128 1-usec
baud 1 usec
code 255
ncoh 2
bandwidth 1961 Hz
FFT 128
dfreq 15.3 Hz
TXoff +150 Hz (echo in bin 64+9=74)
----------------------------------------------------------------------------
127 x 512 0.25-usec
baud 0.25 usec
code 127
ncoh 62
bandwidth 508 Hz
FFT 512
dfreq 0.99 Hz
TXoff + 50Hz (echo in bin 256+50=306)
_____________________________________________________________________
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 will be on aardvark:
/export/data3/osod/ops/a99942/PRDX.OUT.14f-14-14.s162
/PUNCH.OUT.14f-14-14.s162
/EPH.OUT.s162
for WFG:
/export/data3/osod/ops/a99942/PRDX.OUT.14v-14-14.s162
/PUNCH.OUT.14v-14-14.s162
/EPH.OUT.s162
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2013 01 14 14 060000 130.82490 -22.3805 A 97.2 s162
2013 01 14 14 070000 130.75980 -22.3578 A 97.2
2013 01 14 14 080000 130.69390 -22.3345 A 97.3
2013 01 14 14 090000 130.62770 -22.3106 A 1.70 0.70 97.3
2013 01 14 14 100000 130.56150 -22.2861 A 97.3
2013 01 14 14 110000 130.49580 -22.2611 A 97.3
2013 01 14 14 120000 130.43090 -22.2356 A 97.3
2013 01 15 15 060000 129.37970 -21.7900 A 97.6 s162
2013 01 15 15 070000 129.31510 -21.7659 A 97.6
2013 01 15 15 080000 129.24990 -21.7412 A 1.80 0.70 97.6
2013 01 15 15 090000 129.18430 -21.7159 A 97.7
2013 01 15 15 100000 129.11900 -21.6901 A 97.7
2013 01 16 16 050000 128.01530 -21.1940 A 98.1 s162
2013 01 16 16 060000 127.95230 -21.1690 A 98.1
2013 01 16 16 070000 127.88850 -21.1435 A 98.1
2013 01 16 16 080000 127.82400 -21.1174 A 1.70 0.70 98.1
2013 01 16 16 090000 127.75940 -21.0909 A 98.1
2013 01 16 16 100000 127.69500 -21.0637 A 98.2
2013 01 16 16 110000 127.63110 -21.0361 A 98.2
2013 01 17 17 050000 126.60870 -20.5456 A 98.6 s162
2013 01 17 17 060000 126.54660 -20.5193 A 98.6
2013 01 17 17 070000 126.48360 -20.4925 A 98.7
2013 01 17 17 080000 126.42020 -20.4653 A 1.70 0.80 98.7
2013 01 17 17 090000 126.35660 -20.4375 A 98.7
2013 01 17 17 100000 126.29330 -20.4092 A 98.7
2013 01 17 17 110000 126.23060 -20.3804 A 98.8
Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s162
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2013 JAN 14 06:00 97.2356230724 -19813.573 316.1575 -22.3805 130.825 18.829
2013 JAN 14 06:10 97.2370363484 -20516.331 318.6751 -22.3768 130.814 20.194
2013 JAN 14 06:20 97.2384997974 -21244.914 321.1928 -22.3730 130.803 21.503
2013 JAN 14 06:30 97.2400151814 -21998.021 323.7105 -22.3692 130.792 22.755
2013 JAN 14 06:40 97.2415841729 -22774.308 326.2282 -22.3654 130.782 23.944
2013 JAN 14 06:50 97.2432083509 -23572.382 328.7460 -22.3616 130.771 25.068
2013 JAN 14 07:00 97.2448891894 -24390.810 331.2637 -22.3578 130.760 26.123
2013 JAN 14 07:10 97.2466280641 -25228.120 333.7815 -22.3539 130.749 27.106
2013 JAN 14 07:20 97.2484262458 -26082.800 336.2993 -22.3501 130.738 28.013
2013 JAN 14 07:30 97.2502849010 -26953.309 338.8171 -22.3462 130.727 28.840
2013 JAN 14 07:40 97.2522050813 -27838.072 341.3350 -22.3423 130.716 29.584
2013 JAN 14 07:50 97.2541877298 -28735.487 343.8528 -22.3384 130.705 30.243
2013 JAN 14 08:00 97.2562336766 -29643.928 346.3707 -22.3345 130.694 30.813
2013 JAN 14 08:10 97.2583436400 -30561.748 348.8885 -22.3305 130.683 31.291
2013 JAN 14 08:20 97.2605182161 -31487.280 351.4064 -22.3266 130.672 31.676
2013 JAN 14 08:30 97.2627578864 -32418.844 353.9243 -22.3226 130.661 31.965
2013 JAN 14 08:40 97.2650630150 -33354.747 356.4422 -22.3186 130.650 32.157
2013 JAN 14 08:50 97.2674338457 -34293.287 358.9601 -22.3146 130.639 32.251
2013 JAN 14 09:00 97.2698705073 -35232.759 1.4780 -22.3106 130.628 32.246
2013 JAN 14 09:10 97.2723730004 -36171.455 3.9958 -22.3066 130.617 32.143
2013 JAN 14 09:20 97.2749412122 -37107.667 6.5137 -22.3025 130.606 31.942
2013 JAN 14 09:30 97.2775749106 -38039.693 9.0316 -22.2984 130.595 31.644
2013 JAN 14 09:40 97.2802737441 -38965.840 11.5495 -22.2944 130.584 31.251
2013 JAN 14 09:50 97.2830372358 -39884.425 14.0673 -22.2903 130.573 30.764
2013 JAN 14 10:00 97.2858648029 -40793.780 16.5852 -22.2861 130.562 30.186
2013 JAN 14 10:10 97.2887557373 -41692.254 19.1030 -22.2820 130.551 29.519
2013 JAN 14 10:20 97.2917092192 -42578.219 21.6208 -22.2779 130.540 28.767
2013 JAN 14 10:30 97.2947243153 -43450.068 24.1386 -22.2737 130.529 27.932
2013 JAN 14 10:40 97.2977999840 -44306.226 26.6564 -22.2695 130.518 27.018
2013 JAN 14 10:50 97.3009350673 -45145.143 29.1742 -22.2653 130.507 26.028
2013 JAN 14 11:00 97.3041283043 -45965.306 31.6919 -22.2611 130.496 24.967
2013 JAN 14 11:10 97.3073783274 -46765.236 34.2097 -22.2569 130.485 23.836
2013 JAN 14 11:20 97.3106836715 -47543.496 36.7274 -22.2526 130.474 22.641
2013 JAN 14 11:30 97.3140427655 -48298.688 39.2450 -22.2484 130.463 21.384
2013 JAN 14 11:40 97.3174539437 -49029.459 41.7627 -22.2441 130.452 20.069
2013 JAN 14 11:50 97.3209154523 -49734.505 44.2803 -22.2399 130.442 18.699
2013 JAN 14 12:00 97.3244254402 -50412.570 46.7979 -22.2356 130.431 17.278
2013 JAN 15 06:00 97.6160951928 -28397.263 318.5883 -21.7900 129.380 20.628
2013 JAN 15 06:10 97.6181111670 -29129.402 321.1059 -21.7860 129.369 21.949
2013 JAN 15 06:20 97.6201793308 -29886.211 323.6235 -21.7820 129.358 23.212
2013 JAN 15 06:30 97.6223013662 -30666.340 326.1411 -21.7780 129.348 24.414
2013 JAN 15 06:40 97.6244788623 -31468.393 328.6587 -21.7740 129.337 25.550
2013 JAN 15 06:50 97.6267133026 -32290.933 331.1763 -21.7699 129.326 26.616
2013 JAN 15 07:00 97.6290060733 -33132.482 333.6940 -21.7659 129.315 27.610
2013 JAN 15 07:10 97.6313584522 -33991.525 336.2117 -21.7618 129.304 28.528
2013 JAN 15 07:20 97.6337716133 -34866.515 338.7294 -21.7577 129.293 29.366
2013 JAN 15 07:30 97.6362466175 -35755.872 341.2471 -21.7536 129.283 30.121
2013 JAN 15 07:40 97.6387844161 -36657.990 343.7648 -21.7494 129.272 30.790
2013 JAN 15 07:50 97.6413858488 -37571.235 346.2826 -21.7453 129.261 31.369
2013 JAN 15 08:00 97.6440516329 -38493.955 348.8003 -21.7412 129.250 31.855
2013 JAN 15 08:10 97.6467823787 -39424.478 351.3181 -21.7370 129.239 32.248
2013 JAN 15 08:20 97.6495785720 -40361.116 353.8358 -21.7328 129.228 32.543
2013 JAN 15 08:30 97.6524405843 -41302.170 356.3536 -21.7286 129.217 32.741
2013 JAN 15 08:40 97.6553686602 -42245.934 358.8714 -21.7244 129.206 32.840
2013 JAN 15 08:50 97.6583629348 -43190.693 1.3891 -21.7201 129.195 32.839
2013 JAN 15 09:00 97.6614234125 -44134.733 3.9069 -21.7159 129.184 32.738
2013 JAN 15 09:10 97.6645499881 -45076.340 6.4247 -21.7116 129.173 32.539
2013 JAN 15 09:20 97.6677424287 -46013.805 8.9424 -21.7073 129.163 32.241
2013 JAN 15 09:30 97.6710003866 -46945.427 11.4602 -21.7030 129.152 31.847
2013 JAN 15 09:40 97.6743233880 -47869.517 13.9779 -21.6987 129.141 31.359
2013 JAN 15 09:50 97.6777108510 -48784.398 16.4956 -21.6944 129.130 30.778
2013 JAN 15 10:00 97.6811620693 -49688.413 19.0133 -21.6901 129.119 30.108
2013 JAN 16 05:00 98.0638999733 -33237.345 305.8973 -21.1940 128.015 13.645
2013 JAN 16 05:10 98.0662502805 -33829.980 308.4146 -21.1899 128.005 15.222
2013 JAN 16 05:20 98.0686432135 -34453.438 310.9319 -21.1857 127.994 16.757
2013 JAN 16 05:30 98.0710808972 -35106.629 313.4492 -21.1816 127.984 18.246
2013 JAN 16 05:40 98.0735653732 -35788.408 315.9665 -21.1774 127.973 19.686
2013 JAN 16 05:50 98.0760986031 -36497.573 318.4839 -21.1732 127.963 21.075
2013 JAN 16 06:00 98.0786824659 -37232.868 321.0013 -21.1690 127.952 22.410
2013 JAN 16 06:10 98.0813187450 -37992.989 323.5188 -21.1648 127.942 23.685
2013 JAN 16 06:20 98.0840091334 -38776.581 326.0362 -21.1605 127.931 24.900
2013 JAN 16 06:30 98.0867552300 -39582.246 328.5537 -21.1563 127.920 26.048
2013 JAN 16 06:40 98.0895585294 -40408.542 331.0712 -21.1520 127.910 27.128
2013 JAN 16 06:50 98.0924204259 -41253.987 333.5887 -21.1477 127.899 28.134
2013 JAN 16 07:00 98.0953422114 -42117.062 336.1063 -21.1435 127.888 29.064
2013 JAN 16 07:10 98.0983250621 -42996.214 338.6238 -21.1392 127.878 29.914
2013 JAN 16 07:20 98.1013700550 -43889.859 341.1414 -21.1348 127.867 30.681
2013 JAN 16 07:30 98.1044781468 -44796.384 343.6590 -21.1305 127.856 31.360
2013 JAN 16 07:40 98.1076501858 -45714.151 346.1766 -21.1262 127.846 31.949
2013 JAN 16 07:50 98.1108868970 -46641.502 348.6942 -21.1218 127.835 32.445
2013 JAN 16 08:00 98.1141888980 -47576.758 351.2118 -21.1174 127.824 32.846
2013 JAN 16 08:10 98.1175566818 -48518.227 353.7294 -21.1130 127.813 33.149
2013 JAN 16 08:20 98.1209906240 -49464.202 356.2470 -21.1086 127.802 33.354
2013 JAN 16 08:30 98.1244909825 -50412.969 358.7646 -21.1042 127.792 33.458
2013 JAN 16 08:40 98.1280578884 -51362.809 1.2822 -21.0998 127.781 33.461
2013 JAN 16 08:50 98.1316913610 -52312.000 3.7998 -21.0953 127.770 33.364
2013 JAN 16 09:00 98.1353912900 -53258.821 6.3175 -21.0909 127.759 33.167
2013 JAN 16 09:10 98.1391574535 -54201.556 8.8351 -21.0864 127.749 32.870
2013 JAN 16 09:20 98.1429895055 -55138.495 11.3527 -21.0819 127.738 32.476
2013 JAN 16 09:30 98.1468869753 -56067.944 13.8703 -21.0774 127.727 31.986
2013 JAN 16 09:40 98.1508492836 -56988.217 16.3878 -21.0728 127.716 31.404
2013 JAN 16 09:50 98.1548757239 -57897.651 18.9054 -21.0683 127.706 30.731
2013 JAN 16 10:00 98.1589654834 -58794.601 21.4229 -21.0637 127.695 29.970
2013 JAN 16 10:10 98.1631176303 -59677.447 23.9405 -21.0592 127.684 29.126
2013 JAN 16 10:20 98.1673311148 -60544.596 26.4580 -21.0546 127.674 28.201
2013 JAN 16 10:30 98.1716047869 -61394.486 28.9755 -21.0500 127.663 27.200
2013 JAN 16 10:40 98.1759373805 -62225.587 31.4930 -21.0454 127.652 26.125
2013 JAN 16 10:50 98.1803275259 -63036.407 34.0104 -21.0407 127.642 24.981
2013 JAN 16 11:00 98.1847737503 -63825.491 36.5279 -21.0361 127.631 23.772
2013 JAN 17 05:00 98.6069476678 -42102.026 308.2895 -20.5456 126.609 15.627
2013 JAN 17 05:10 98.6099204874 -42727.492 310.8066 -20.5413 126.598 17.174
2013 JAN 17 05:20 98.6129382018 -43382.869 313.3238 -20.5369 126.588 18.676
2013 JAN 17 05:30 98.6160028701 -44067.009 315.8410 -20.5325 126.578 20.130
2013 JAN 17 05:40 98.6191164643 -44778.706 318.3582 -20.5281 126.567 21.532
2013 JAN 17 05:50 98.6222808744 -45516.705 320.8754 -20.5237 126.557 22.880
2013 JAN 17 06:00 98.6254978963 -46279.697 323.3927 -20.5193 126.547 24.170
2013 JAN 17 06:10 98.6287692348 -47066.326 325.9100 -20.5149 126.536 25.398
2013 JAN 17 06:20 98.6320964976 -47875.188 328.4273 -20.5104 126.526 26.560
2013 JAN 17 06:30 98.6354811955 -48704.839 330.9446 -20.5060 126.515 27.654
2013 JAN 17 06:40 98.6389247306 -49553.793 333.4620 -20.5015 126.505 28.674
2013 JAN 17 06:50 98.6424284038 -50420.526 335.9793 -20.4970 126.494 29.617
2013 JAN 17 07:00 98.6459934085 -51303.481 338.4967 -20.4925 126.484 30.480
2013 JAN 17 07:10 98.6496208220 -52201.068 341.0141 -20.4880 126.473 31.259
2013 JAN 17 07:20 98.6533116178 -53111.670 343.5315 -20.4835 126.463 31.951
2013 JAN 17 07:30 98.6570666488 -54033.644 346.0489 -20.4790 126.452 32.551
2013 JAN 17 07:40 98.6608866562 -54965.325 348.5664 -20.4744 126.441 33.058
2013 JAN 17 07:50 98.6647722563 -55905.030 351.0838 -20.4699 126.431 33.468
2013 JAN 17 08:00 98.6687239572 -56851.058 353.6013 -20.4653 126.420 33.780
2013 JAN 17 08:10 98.6727421396 -57801.697 356.1187 -20.4607 126.410 33.992
2013 JAN 17 08:20 98.6768270668 -58755.228 358.6361 -20.4561 126.399 34.103
2013 JAN 17 08:30 98.6809788807 -59709.924 1.1536 -20.4514 126.388 34.112
2013 JAN 17 08:40 98.6851976024 -60664.055 3.6710 -20.4468 126.378 34.019
2013 JAN 17 08:50 98.6894831342 -61615.895 6.1885 -20.4422 126.367 33.824
2013 JAN 17 09:00 98.6938352529 -62563.719 8.7059 -20.4375 126.357 33.530
2013 JAN 17 09:10 98.6982536162 -63505.811 11.2233 -20.4328 126.346 33.136
2013 JAN 17 09:20 98.7027377632 -64440.468 13.7407 -20.4281 126.335 32.646
2013 JAN 17 09:30 98.7072871129 -65365.999 16.2581 -20.4234 126.325 32.062
2013 JAN 17 09:40 98.7119009670 -66280.730 18.7755 -20.4187 126.314 31.386
2013 JAN 17 09:50 98.7165785127 -67183.009 21.2929 -20.4139 126.304 30.622
2013 JAN 17 10:00 98.7213188180 -68071.210 23.8103 -20.4092 126.293 29.774
2013 JAN 17 10:10 98.7261208396 -68943.731 26.3276 -20.4044 126.283 28.844
2013 JAN 17 10:20 98.7309834240 -69799.001 28.8449 -20.3996 126.272 27.837
2013 JAN 17 10:30 98.7359053073 -70635.483 31.3622 -20.3948 126.262 26.756
2013 JAN 17 10:40 98.7408851207 -71451.676 33.8795 -20.3900 126.251 25.605
2013 JAN 17 10:50 98.7459213891 -72246.119 36.3968 -20.3852 126.241 24.388
2013 JAN 17 11:00 98.7510125405 -73017.392 38.9140 -20.3804 126.231 23.109
99942 Apophis GOLDSTONE MASTERLOG
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Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 183-610 | FAX: (818) 393-4445
Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov
California Institute of Technology | Plan: To live long and prosper
Pasadena, CA 91109-8099
http://echo.jpl.nasa.gov/asteroids/Apophis/Apophis_2013_planning.html
Asteroid Radar Astronomy