2011 CP4 Goldstone Radar Observations Planning
2011 CP4 was discovered by Pan-STARRS 1 on Haleakala on February 2, 2011. Not much is known about this Aten-class Potentially Hazardous Asteroid except that its absolute magnitude of 21.2 suggests a diameter of ~180 m (within a factor of two). 2011 CP4 has a highly eccentric orbit (e = 0.87) with a perihelion of only 0.118 AU, which is well inside the orbit of Mercury and also the second smallest perihelion of any asteroid we've ever tried to observe with radar (after 2000 BD19, with q = 0.092 AU). 2011 CP4 will approach within only 9.1 lunar distances (0.023 AU) on February 23, 2012, when it will be a good radar target at Goldstone and an excellent imaging target at Arecibo. 2011 CP4 also makes frequent approaches within 10 - 30 lunar distances of Mercury and Venus. Due to its very low perihelion distance, this object may be a good test of Einstein's theory of general relativity if we can obtain radar ranging measurements. Ranging measurements are thus a high priority for this campaign. 2011 CP4 will also be a good optical target for a few days around the close approach when it brightens to about 16th magnitude. Shortly afterward it will get too close to the Sun to observe with optical telescopes. New astrometry was reported for this object on January 31, 2012 using precovery observations obtained by the JPL NEAT program in 2002 and from new measurements obtained at the Astronomical Research Observatory in Westfield, Illinois (station H21) in 2012. The new observations extended the arc from 30 days to ten years and dramatically shrank the orbital uncertainties. The pointing is now good enough for radar observations.
Orbital and Physical Characteristics orbit type Aten semimajor axis 0.911 AU eccentricity 0.870 inclination 9.44 deg perihelion distance 0.118 AU aphelion distance 1.705 AU absolute magnitude (H) 21.2 diameter ~0.18 km (+- a factor of two) rotation period unknown pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2012 Feb 21
M.P.E.C. 2011-C24 Issued 2011 Feb. 6, 05:46 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.minorplanetcenter.org/iau/mpc.html ISSN 1523-6714
2011 CP4
Observations:
K11C04P* C2011 02 02.50235 09 30 59.799+09 26 34.34 21.8 wLEC024F51
K11C04P C2011 02 02.51749 09 30 55.876+09 26 55.27 21.7 wLEC024F51
K11C04P C2011 02 02.53342 09 30 51.780+09 27 17.35 21.7 wLEC024F51
K11C04P C2011 02 05.36374 09 18 28.83 +10 34 26.3 21.0 VrEC024G96
K11C04P C2011 02 05.37067 09 18 26.92 +10 34 36.5 20.9 VrEC024G96
K11C04P C2011 02 05.37764 09 18 24.87 +10 34 47.7 21.9 VrEC024G96
K11C04P C2011 02 05.38463 09 18 23.07 +10 34 56.9 21.1 VrEC024G96
K11C04P C2011 02 06.19201 09 14 42.49 +10 54 43.0 21.2 VoEC024291
K11C04P HC2011 02 06.19577 09 14 41.48 +10 54 48.4 oEC024291
K11C04P C2011 02 06.19956 09 14 40.39 +10 54 54.1 21.6 VoEC024291
Observer details:
291 LPL/Spacewatch II. Observer T. H. Bressi. 1.8-m f/2.7 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers N. Primak, A. Schultz, S. Watters,
J. Thiel, T. Goggia. Measurer PS1 Science Consortium. 1.8-m
Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observers A. Gibbs, .. Birtwhistle. Measurers
J. D. Ahern, E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs,
A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson, R. H. McNaught.
1.5-m reflector + CCD.
Orbital elements:
2011 CP4 PHA, Earth MOID = 0.0183 AU
Epoch 2011 Feb. 8.0 TT = JDT 2455600.5 MPC
M 242.23445 (2000.0) P Q
n 1.13981847 Peri. 158.91097 +0.61228153 +0.78658417
a 0.9076371 Node 148.68245 -0.74564028 +0.60811155
e 0.8572510 Incl. 8.85133 -0.26292947 +0.10717130
P 0.86 H 21.3 G 0.15 U 9
Residuals in seconds of arc
110202 F51 0.0 0.1- 110205 G96 0.4+ 0.3- 110206 291 0.4+ 0.1-
110202 F51 0.1- 0.0 110205 G96 1.4- 0.8+ 110206 291 0.0 0.0
110202 F51 0.1+ 0.1+ 110205 G96 0.7+ 0.2-
110205 G96 0.3+ 0.4- 110206 291 0.3- 0.1+
Ephemeris:
2011 CP4 a,e,i = 0.91, 0.86, 9 q = 0.1296
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 01 07 10 40 03.0 +03 08 24 0.8850 1.6628 125.7 28.7 23.4
...
2011 01 22 10 11 07.8 +05 43 41 0.6996 1.6219 148.4 18.5 22.5
...
2011 01 30 09 45 00.5 +08 09 20 0.6228 1.5913 163.1 10.4 21.9
...
2011 02 05 09 20 07.7 +10 25 42 0.5803 1.5642 174.0 3.8 21.4
2011 02 06 09 15 35.1 +10 50 05 0.5747 1.5593 175.0 3.2 21.4
2011 02 07 09 10 56.6 +11 14 47 0.5695 1.5543 175.1 3.1 21.3
...
2011 02 13 08 41 28.5 +13 46 02 0.5476 1.5223 164.7 9.8 21.5
...
2011 02 21 08 00 39.7 +16 55 52 0.5431 1.4735 146.8 21.6 21.9
...
2011 03 08 06 55 22.5 +21 05 26 0.5943 1.3620 116.0 40.9 22.4
Carl W. Hergenrother (C) Copyright 2011 MPC M.P.E.C. 2011-C24
Target Name: 2011 CP4
D = 0.18 km
Period = 2.2 hr
OC albedo = 0.100
UT # max
start date window RA, dec dist runs SNR SNR/run
------------------------------------------------------------------------
2012 Feb 20 06:43-16:12 204, +7 0.059 299 13 1
2012 Feb 21 06:55-17:01 212, +12 0.043 422 47 3
2012 Feb 22 07:26-18:54 230, +21 0.030 656 220 9
2012 Feb 23 09:14-22:45 275, +33 0.023 904 580 22
2012 Feb 24 12:41-00:47 320, +28 0.031 657 180 8
2012 Feb 25 14:26-01:24 338, +21 0.046 434 40 2
2012 Feb 26 15:11-01:38 346, +17 0.062 314 12 1
Goldstone SNRs assume Ptx = 450 kW
Goldstone tracks:
UT UT PST Duration Round-trip
DOY Date TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- -------
053 Feb 22 0915-1520 0115-0720 Feb 22 06:05 30 9
054 Feb 23 0920-1415 0120-0615 Feb 23 04:55 23 22
055 Feb 24 1400-1630 0600-0830 Feb 24 02:30 30 8
TXON at the earliest.
Scheduled Arecibo tracks:
UT UT AST PST Duration Round-trip
DOY Date TX Window TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- ---------- ---------
052 Feb 21 0711-0945 0311-0545 Feb 21 2311-0145 Feb 20/21 02:34 46 51
053 Feb 22 0757-1054 0357-0654 Feb 22 2357-0254 Feb 21/22 02:57 32 180
054 Feb 23 1051-1312 0651-0912 Feb 23 0251-0512 Feb 23 02:21 23 490
055 Feb 24 1400-1635 1000-1235 Feb 24 0600-0835 Feb 24 02:35 30 220
056 Feb 25 1508-1758 1108-1358 Feb 25 0708-0958 Feb 25 02:50 44 59
From Jon Giorgini, 2012 Feb 21: With 84 optical measurements (2002-Jan-10 to 2012-Feb-20) and the just-reported delay and Doppler from Arecibo, orbit solution #26 was computed. OSOD and nominal GSSR predicts are on aardvark in the /2011cp4 sub-dorectory. Formal 2011 CP4 s26 3-sigma X-band plane-of-sky uncertainties are: Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Feb-22 00:00 1.695 3.50 0.000018 2012-Feb-23 00:00 2.395 6.58 0.000067 2012-Feb-24 00:00 2.398 3.69 0.000122 2012-Feb-25 00:00 1.733 1.73 0.000133 - - - - - - - - - - - - - - - - - - - From JPL/Horizons, 2012 Feb 13, Solution #18, #obs = 67 (2002-2012): Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Feb-15 00:00 191.89149 -0.98044 0.15319492998443 2.278 0.73 2.64 0.001846 2012-Feb-16 00:00 192.90929 -0.37743 0.13572434579558 2.640 0.75 2.72 0.001862 2012-Feb-17 00:00 194.20109 0.41184 0.11834836434501 3.118 0.85 3.11 0.001871 2012-Feb-18 00:00 195.90904 1.47941 0.10110027543180 3.777 1.16 4.22 0.001871 2012-Feb-19 00:00 198.28912 2.98856 0.08404186305713 4.737 1.87 6.81 0.001855 2012-Feb-20 00:00 201.84892 5.25371 0.06729877503569 6.243 3.45 12.54 0.001807 2012-Feb-21 00:00 207.73315 8.93854 0.05116078843959 8.848 7.19 26.14 0.001691 2012-Feb-22 00:00 218.98506 15.51082 0.03641861409040 13.820 17.34 63.01 0.001411 2012-Feb-23 00:00 244.51766 26.77990 0.02558800929684 21.876 41.41 150.49 0.000931 2012-Feb-24 00:00 m 291.69368 32.85778 0.02454240446021 20.395 39.02 141.81 0.001621 2012-Feb-25 00:00 m 324.80180 26.19499 0.03419698849898 11.501 13.76 50.00 0.002275 2012-Feb-26 00:00 m 339.12784 20.32641 0.04855262997998 7.387 5.63 20.45 0.002471 2012-Feb-27 00:00 m 346.18138 16.76470 0.06456368888829 5.506 3.12 11.33 0.002548 2012-Feb-28 00:00 m 350.24997 14.50959 0.08127944152651 4.442 2.13 7.75 0.002599 2012-Feb-29 00:00 m 352.86397 12.97474 0.09836635610108 3.749 1.72 6.25 0.002644 2012-Mar-01 00:00 m 354.66981 11.86373 0.11568816723302 3.260 1.57 5.71 0.002690 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From JPL/Horizons, 2012 Jan 31, Solution #15, #obs = 55 (2002-2012): Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Feb-15 00:00 * 191.88084 -0.98468 0.15321002070799 5.054 4.03 14.63 0.005381 2012-Feb-16 00:00 * 192.89727 -0.38228 0.13573923469269 5.790 4.20 15.25 0.005511 2012-Feb-17 00:00 * 194.18729 0.40617 0.11836287589390 6.744 4.45 16.18 0.005640 2012-Feb-18 00:00 * 195.89279 1.47262 0.10111414149722 8.033 4.89 17.78 0.005766 2012-Feb-19 00:00 * 198.26935 2.98018 0.08405464555702 9.877 5.78 21.01 0.005881 2012-Feb-20 00:00 * 201.82372 5.24291 0.06730969304535 12.744 7.90 28.71 0.005966 2012-Feb-21 00:00 *m 207.69875 8.92402 0.05116828474651 17.807 13.90 50.50 0.005963 2012-Feb-22 00:00 *m 218.93368 15.49155 0.03641918084605 28.482 33.90 123.20 0.005663 2012-Feb-23 00:00 *m 244.44205 26.76627 0.02557418158518 51.475 97.78 355.37 0.004362 2012-Feb-24 00:00 *m 291.65513 32.87081 0.02451225925160 60.778 125.47 456.03 0.003173 2012-Feb-25 00:00 *m 324.80810 26.20058 0.03416374732864 38.988 57.73 209.83 0.004798 2012-Feb-26 00:00 *m 339.14106 20.32560 0.04852081746283 24.732 26.50 96.33 0.005785 2012-Feb-27 00:00 *m 346.19396 16.76198 0.06453327903143 17.547 15.22 55.33 0.006317 2012-Feb-28 00:00 *m 350.26093 14.50643 0.08124999968065 13.524 10.50 38.15 0.006672 2012-Feb-29 00:00 *m 352.87341 12.97160 0.09833755160361 11.010 8.26 30.01 0.006952 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - From JPL Horizons, Sep 14 2011, Solution #14, #obs 47 (30 days) Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Feb-15 00:00 3310.001 500.24 1818.09 0.256246 2012-Feb-16 00:00 3778.899 685.44 2491.21 0.237198 2012-Feb-17 00:00 4384.316 970.98 3528.98 0.210257 2012-Feb-18 00:00 5193.373 1430.38 5198.64 0.171079 2012-Feb-19 00:00 6322.664 2214.24 8047.56 0.112886 2012-Feb-20 00:00 7987.538 3661.37 13307.08 0.046973 2012-Feb-21 00:00 10600.822 6602.67 23997.10 0.177969 2012-Feb-22 00:00 14825.900 12914.16 46935.90 0.506058 2012-Feb-23 00:00 19803.285 20489.49 74468.11 1.120818 2012-Feb-24 00:00 m 18475.930 3562.80 12948.82 1.620152 2012-Feb-25 00:00 m 13934.603 5785.10 21025.68 1.507078 2012-Feb-26 00:00 m 10419.699 4118.68 14969.14 1.323052 2012-Feb-27 00:00 m 8128.295 2378.10 8643.09 1.208232 2012-Feb-28 00:00 m 6617.725 1297.06 4714.12 1.143654 2012-Feb-29 00:00 m 5570.959 620.24 2254.23 1.110142 2012-Mar-01 00:00 m 4809.844 172.79 628.01 1.096723 2012-Mar-02 00:00 m 4233.813 173.29 629.83 1.097248 2012-Mar-03 00:00 m 3783.420 419.05 1523.02 1.108151 2012-Mar-04 00:00 m 3421.749 623.03 2264.37 1.127280 2012-Mar-05 00:00 m 3124.825 798.98 2903.86 1.153308 2012-Mar-06 00:00 m 2876.464 957.42 3479.70 1.185408 2012-Mar-07 00:00 m 2665.369 1105.47 4017.79 1.223079 2012-Mar-08 00:00 m 2483.428 1248.17 4536.40 1.266037 2012-Mar-09 00:00 m 2324.663 1389.24 5049.11 1.314156 2012-Mar-10 00:00 2184.574 1531.65 5566.70 1.367431 ****************************************************************************************** Apparent Magnitudes and Solar Elongations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta S-O-T /r 2012-Jan-18 00:00 182.50012 -3.02041 22.57 0.66115100019437 113.5955 /L 2012-Jan-19 00:00 182.73849 -3.07472 22.49 0.64256689279225 114.3738 /L 2012-Jan-20 00:00 182.97607 -3.12547 22.41 0.62400139585754 115.1542 /L 2012-Jan-21 00:00 183.21302 -3.17246 22.33 0.60545672531782 115.9367 /L 2012-Jan-22 00:00 183.44952 -3.21544 22.25 0.58693506957598 116.7211 /L 2012-Jan-23 00:00 183.68582 -3.25416 22.17 0.56843855618543 117.5074 /L 2012-Jan-24 00:00 183.92218 -3.28834 22.08 0.54996922085119 118.2952 /L 2012-Jan-25 00:00 184.15896 -3.31767 21.99 0.53152898286360 119.0845 /L 2012-Jan-26 00:00 184.39652 -3.34180 21.90 0.51311962938978 119.8749 /L 2012-Jan-27 00:00 184.63536 -3.36034 21.80 0.49474280870517 120.6663 /L 2012-Jan-28 00:00 184.87600 -3.37285 21.70 0.47640003049760 121.4581 /L 2012-Jan-29 00:00 185.11910 -3.37882 21.60 0.45809267047966 122.2500 /L 2012-Jan-30 00:00 185.36541 -3.37767 21.49 0.43982197670627 123.0416 /L 2012-Jan-31 00:00 185.61582 -3.36873 21.38 0.42158907580995 123.8321 /L 2012-Feb-01 00:00 185.87141 -3.35121 21.27 0.40339497839700 124.6210 /L 2012-Feb-02 00:00 186.13344 -3.32418 21.15 0.38524058385097 125.4073 /L 2012-Feb-03 00:00 186.40345 -3.28654 21.02 0.36712668572063 126.1900 /L 2012-Feb-04 00:00 186.68327 -3.23700 20.89 0.34905397978654 126.9679 /L 2012-Feb-05 00:00 186.97517 -3.17397 20.76 0.33102307791132 127.7394 /L 2012-Feb-06 00:00 187.28192 -3.09551 20.62 0.31303453183629 128.5025 /L 2012-Feb-07 00:00 187.60695 -2.99925 20.47 0.29508887208592 129.2548 /L 2012-Feb-08 00:00 187.95460 -2.88219 20.31 0.27718666790037 129.9932 /L 2012-Feb-09 00:00 188.33035 -2.74055 20.14 0.25932861475207 130.7136 /L 2012-Feb-10 00:00 188.74129 -2.56945 19.96 0.24151565743170 131.4108 /L 2012-Feb-11 00:00 189.19676 -2.36252 19.78 0.22374916111450 132.0777 /L 2012-Feb-12 00:00 189.70924 -2.11122 19.58 0.20603115390552 132.7045 /L 2012-Feb-13 00:00 190.29588 -1.80388 19.36 0.18836468749100 133.2776 /L 2012-Feb-14 00:00 190.98083 -1.42416 19.13 0.17075440692389 133.7774 /L 2012-Feb-15 00:00 191.79922 -0.94836 18.87 0.15320750659774 134.1745 /L 2012-Feb-16 00:00 192.80406 -0.34092 18.60 0.13573542771209 134.4232 /L 2012-Feb-17 00:00 194.07914 0.45406 18.29 0.11835705518264 134.4492 /L 2012-Feb-18 00:00 195.76474 1.52931 17.94 0.10110516855131 134.1239 /L 2012-Feb-19 00:00 198.11364 3.04939 17.56 0.08404063483281 133.2075 /L 2012-Feb-20 00:00 201.62752 5.33150 17.12 0.06728731236509 131.2091 /L 2012-Feb-21 00:00 207.43993 9.04678 16.62 0.05113114188717 126.9995 /L 2012-Feb-22 00:00 218.57913 15.68907 16.14 0.03635416376691 117.6447 /L 2012-Feb-23 00:00 244.04444 27.15925 16.06 0.02546007937031 95.9176 /L 2012-Feb-24 00:00 291.72431 33.38715 17.75 0.02436719294010 60.6242 /L 2012-Feb-25 00:00 325.09564 26.50380 n.a. 0.03403834799627 37.8952 /L 2012-Feb-26 00:00 339.38967 20.50693 n.a. 0.04841530314960 29.6060 /T 2012-Feb-27 00:00 346.39407 16.88737 n.a. 0.06443915885787 26.5380 /T
CW setup:
----------------------------------------------------------------------------
in the case of large Doppler uncertainty:
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: no hops, +1kHz offset
Bandwidth: 8000 Hz
Sampling interval: 625 x 0.1 usec
VME FFT for PSD files: 4096 for 3.9-Hz resolution
---------------------------------------------------------------------------
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: no hops, +0.5kHz offset
Bandwidth: 2000 Hz
Sampling interval: 2500 x 0.1 usec
VME FFT for PSD files: 32768 for 0.12 Hz resolution
Ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec
baud 10 usec
code 127
PRP 1270 usec
FFT 64
ncoh 1
bandwidth 787 Hz
resolution 12.3 Hz
TXOFF +150 Hz (echo in bin 32+12=44)
---------------------------------------------------------------------------
127 x 64 11-usec
baud 11 usec
code 127
PRP 1397 usec
FFT 64
ncoh 1
bandwidth 717 Hz
resolution 11.2 Hz
TXOFF +150 Hz (echo in bin 32+13=45)
-------------------------------------------------------------------------
1-usec
baud 1 usec
code 255
ncoh 15
bandwidth 256 Hz
FFT 256
resolution 1 Hz
TXoff +20 Hz (echo in bin 64+16=80)
-------------------------------------------------------------------------------
Tentatively:
0.25-usec imaging
baud 0.25 usec
code 255
FFT 256
ncoh 32
bandwidth 490 Hz
resolution 1.9 Hz
TXOFF +50 Hz (echo in bin 128+26=154)
---------------------------------
0.125-usec imaging
baud 0.125 usec
code 255
FFT 256
ncoh 64
bandwidth 490 Hz
resolution 1.9 Hz
TXOFF +50 Hz (echo in bin 128+26=154)
_____________________________________________________________________
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:
CW and binary phase coding:
/export/data3/osod/ops/2011cp4/PRDX.OUT.14f-14-14.s32
/PUNCH.OUT.14f-14-14.s32
/EPH.OUT.s32
Chirping:
/export/data3/osod/ops/2011cp4/PRDX.OUT.14v-14-14.s32
/PUNCH.OUT.14v-14-14.s32
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2012 02 23 054 090000 260.9135 30.9667 A 23.6
2012 02 23 054 100000 262.9247 31.3410 A -13.20 2.30 23.5 s32
2012 02 23 054 110000 264.9617 31.6859 A 23.4
2012 02 23 054 110000 264.9617 31.6859 B 23.4
2012 02 23 054 120000 267.0201 31.9988 B -13.40 1.90 23.4 s32
2012 02 23 054 130000 269.0956 32.2776 B 23.3
2012 02 23 054 130000 269.0956 32.2776 C 23.3
2012 02 23 054 140000 271.1837 32.5203 C -13.50 1.50 23.3 s32
2012 02 23 054 150000 273.2799 32.7257 C 23.3
Transmit offsets are given in millidegrees.
PRDX.OUT.s32
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2012 FEB 23 09:00 23.6319507937 286823.428 269.8686 30.9667 260.913 17.257
2012 FEB 23 09:10 23.6121547885 278015.357 272.0422 31.0310 261.247 18.886
2012 FEB 23 09:20 23.5929776853 269164.194 274.2150 31.0946 261.581 20.527
2012 FEB 23 09:30 23.5744224771 260270.738 276.3870 31.1573 261.916 22.178
2012 FEB 23 09:40 23.5564921025 251335.825 278.5582 31.2194 262.251 23.838
2012 FEB 23 09:50 23.5391894339 242360.327 280.7287 31.2806 262.588 25.507
2012 FEB 23 10:00 23.5225172845 233345.150 282.8984 31.3410 262.925 27.184
2012 FEB 23 10:10 23.5064784030 224291.235 285.0675 31.4006 263.263 28.869
2012 FEB 23 10:20 23.4910754709 215199.553 287.2358 31.4593 263.601 30.562
2012 FEB 23 10:30 23.4763111038 206071.111 289.4034 31.5173 263.940 32.262
2012 FEB 23 10:40 23.4621878353 196906.947 291.5704 31.5743 264.280 33.969
2012 FEB 23 10:50 23.4487081359 187708.125 293.7368 31.6305 264.621 35.681
2012 FEB 23 11:00 23.4358744001 178475.745 295.9025 31.6859 264.962 37.400
2012 FEB 23 11:10 23.4236889338 169210.930 298.0677 31.7403 265.303 39.124
2012 FEB 23 11:20 23.4121539737 159914.835 300.2323 31.7938 265.646 40.853
2012 FEB 23 11:30 23.4012716716 150588.638 302.3963 31.8465 265.988 42.587
2012 FEB 23 11:40 23.3910440952 141233.545 304.5598 31.8982 266.332 44.326
2012 FEB 23 11:50 23.3814732272 131850.786 306.7227 31.9489 266.676 46.068
2012 FEB 23 12:00 23.3725609588 122441.614 308.8852 31.9988 267.020 47.815
2012 FEB 23 12:10 23.3643091014 113007.306 311.0472 32.0477 267.365 49.564
2012 FEB 23 12:20 23.3567193675 103549.158 313.2087 32.0956 267.710 51.318
2012 FEB 23 12:30 23.3497933860 94068.490 315.3698 32.1426 268.056 53.074
2012 FEB 23 12:40 23.3435326849 84566.638 317.5305 32.1886 268.402 54.833
2012 FEB 23 12:50 23.3379387054 75044.958 319.6908 32.2336 268.749 56.594
2012 FEB 23 13:00 23.3330127897 65504.822 321.8508 32.2776 269.096 58.357
2012 FEB 23 13:10 23.3287561826 55947.619 324.0103 32.3206 269.443 60.122
2012 FEB 23 13:20 23.3251700316 46374.754 326.1696 32.3626 269.790 61.889
2012 FEB 23 13:30 23.3222553810 36787.643 328.3285 32.4035 270.138 63.656
2012 FEB 23 13:40 23.3200131792 27187.718 330.4872 32.4435 270.487 65.425
2012 FEB 23 13:50 23.3184442820 17576.419 332.6456 32.4824 270.835 67.193
2012 FEB 23 14:00 23.3175494238 7955.200 334.8037 32.5203 271.184 68.962
2012 FEB 23 14:10 23.3173292610 -1674.478 336.9616 32.5572 271.533 70.729
2012 FEB 23 14:20 23.3177843267 -11311.145 339.1194 32.5930 271.882 72.495
2012 FEB 23 14:30 23.3189150633 -20953.323 341.2769 32.6278 272.231 74.258
2012 FEB 23 14:40 23.3207218011 -30599.528 343.4343 32.6615 272.581 76.016
2012 FEB 23 14:50 23.3232047744 -40248.274 345.5915 32.6941 272.930 77.767
2012 FEB 23 15:00 23.3263641089 -49898.068 347.7486 32.7257 273.280 79.507
2012 FEB 23 15:10 23.3301998216 -59547.415 349.9056 32.7562 273.630 81.229
2012 FEB 23 15:20 23.3347118330 -69194.819 352.0626 32.7857 273.980 82.920
2011CP4 GOLDSTONE MASTERLOG
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Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 300-233 | FAX: (818) 354-9476
Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov
California Institute of Technology | Plan: To live long and prosper
Pasadena, CA 91109-8099
http://echo.jpl.nasa.gov/asteroids/2011CP4/2011CP4_planning.html
Asteroid Radar Astronomy