2005 JE46 Planning
Background
2005 JE46 was discovered by LINEAR on May 10, 2005. It will approach within 0.036 AU
(14 lunar distances) on November 8. Its physical properties are unknown, but its
absolute magnitude of 18.0 suggests a diameter within a factor of two of 0.8 km.
Due to the proximity of its approach and its size, 2005 JE46 will be a strong radar
target at Goldstone. The view periods overlap most of the time already scheduled for
observations of asteroid 1862 Apollo, so we intend to split the time between the two
asteroids. If the echoes from 2005 JE46 are significantly stronger than those from
Apollo, as we expect, then we will devote most of the time to observing 2005 JE46.
2005 JE46 has been classified as a "Potentially Hazardous Asteroid" by the International
Astronomical Union's Minor Planet Center.
Goldstone observations are scheduled on November 2, 6, 7, and 10.
Observations are not scheduled at Arecibo due to conflicts with other projects.
Orbital and Physical Characteristics
orbit type Apollo
semimajor axis 1.906 AU
eccentricity 0.553
inclination 8.24°
perihelion distance 0.853 AU
aphelion distance 2.960 AU
absolute magnitude (H) 18.0
diameter 0.8 km +/- a factor of two
rotation period unknown
pole direction unknown
lightcurve amplitude unknown
spectral class unknown
Last updated: 2005 November 14
Discovery
M.P.E.C. 2005-J48 Issued 2005 May 11, 15:41 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
2005 JE46
Observations:
K05J46E* C2005 05 10.29500 15 43 06.27 -21 24 15.8 19.8 EJ048704
K05J46E C2005 05 10.30616 15 43 05.30 -21 24 09.3 19.9 EJ048704
K05J46E C2005 05 10.31814 15 43 04.13 -21 24 00.4 19.7 EJ048704
K05J46E C2005 05 10.32878 15 43 03.09 -21 23 54.4 19.7 EJ048704
K05J46E C2005 05 10.34008 15 43 02.03 -21 23 47.2 19.7 EJ048704
K05J46E C2005 05 11.00271 15 42 01.26 -21 16 32.6 EJ048J95
K05J46E C2005 05 11.01427 15 42 00.07 -21 16 24.2 19.5 R EJ048J95
K05J46E C2005 05 11.23934 15 41 39.51 -21 13 50.6 19.3 R EJ048854
K05J46E C2005 05 11.24605 15 41 38.83 -21 13 46.1 19.4 R EJ048854
K05J46E C2005 05 11.25324 15 41 38.19 -21 13 41.9 19.3 R EJ048854
K05J46E 5C2005 05 11.33843 15 41 29.93 -21 12 45.0 19.0 R EJ048673
K05J46E 5C2005 05 11.34734 15 41 29.01 -21 12 38.8 EJ048673
K05J46E 5C2005 05 11.35081 15 41 28.65 -21 12 36.5 EJ048673
K05J46E 5C2005 05 11.35521 15 41 28.31 -21 12 33.9 EJ048673
Observer details:
673 Table Mountain Observatory, Wrightwood. Observer J. Young. 0.6-m
reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
H. Stange, A. Milner. Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
1.0-m f/2.15 reflector + CCD.
854 Sabino Canyon Observatory, Tucson. Observer J. E. McGaha. 0.36-m f/10.0
Schmidt-Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.30-m f/6.3 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2005 JE46 PHA 0.040
Epoch 2005 May 10.0 TT = JDT 2453500.5 MPC
M 302.93108 (2000.0) P Q
n 0.40766663 Peri. 111.79965 +0.98063839 +0.16446479
a 1.8013548 Node 238.87710 -0.19108944 +0.92234199
e 0.5110227 Incl. 7.13302 +0.04281558 +0.34962348
P 2.42 H 18.6 G 0.15
From 14 observations 2005 May 10-11.
Ephemeris:
2005 JE46 a,e,i = 1.80, 0.51, 7 q = 0.8808
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2005 05 10 15 43.55 -21 27.3 0.738 1.742 170.7 5.4 19.6
2005 05 20 15 26.65 -19 21.6 0.663 1.673 175.1 2.9 19.1
2005 05 30 15 07.56 -16 44.0 0.610 1.602 160.5 12.2 19.3
2005 06 09 14 49.07 -13 49.9 0.579 1.529 145.7 21.9 19.4
2005 06 19 14 34.03 -11 01.7 0.565 1.455 131.8 31.4 19.5
2005 06 29 14 24.13 -08 37.4 0.560 1.379 119.1 40.1 19.6
2005 07 09 14 19.93 -06 45.2 0.559 1.303 108.0 47.9 19.7
2005 07 19 14 21.24 -05 24.4 0.556 1.227 98.4 55.0 19.8
2005 07 29 14 27.34 -04 27.8 0.546 1.153 90.1 61.7 19.8
2005 08 08 14 37.49 -03 47.1 0.526 1.083 82.9 68.3 19.8
2005 08 18 14 50.92 -03 12.0 0.495 1.018 76.5 75.2 19.7
Timothy B. Spahr (C) Copyright 2005 MPC M.P.E.C. 2005-J48
SNR Calculation
Target Name: 2005 JE46
HMag: 18.0
Diameter: 0.8 km (a standard guess assuming an S-class optical albedo)
Period: 4 (a standard guess)
------------GOLDSTONE---------- -------------ARECIBO-----------
Max Max
Dat Run UTC Dat Run UTC
Date RA Decl Delta Runs SNR SNR Window Runs SNR SNR Window
2005 10 26 240 17 0.104 177 19 2 16:30-26:41 46 200 32 16:53-19:30
2005 10 27 240 19 0.097 191 25 2 16:18-26:36 48 270 41 16:41-19:30
2005 10 28 239 20 0.090 208 34 3 16:06-26:36 52 360 53 16:36-19:18
2005 10 29 239 22 0.083 227 46 3 15:54-26:36 56 500 70 16:30-19:11
2005 10 30 238 25 0.076 250 65 5 15:41-26:36 59 680 95 16:23-19:06
2005 10 31 237 27 0.070 276 94 6 15:24-26:36 61 940 130 16:23-18:53
2005 11 1 235 31 0.063 308 140 9 15:05-26:30 60 1300 180 16:23-18:36
2005 11 2 233 35 0.057 347 210 12 14:41-26:30 51 1400 230 16:23-18:06
2005 11 3 231 39 0.052 395 310 18 14:18-26:30 0 0 0 -
2005 11 4 227 45 0.047 454 490 25 13:35-26:30 0 0 0 -
2005 11 5 221 52 0.042 530 740 36 12:48-26:30 0 0 0 -
2005 11 6 211 60 0.039 631 1100 48 11:24-26:23 0 0 0 -
2005 11 7 193 67 0.037 700 1400 59 9:11-26:00 0 0 0 -
2005 11 8 162 71 0.036 700 1500 63 6:12-24:48 0 0 0 -
2005 11 9 128 68 0.037 700 1400 59 4:30-21:48 0 0 0 -
2005 11 10 107 62 0.039 657 1100 48 4:00-19:23 0 0 0 -
2005 11 11 96 54 0.042 546 750 36 3:53-17:53 0 0 0 -
2005 11 12 89 48 0.047 466 490 25 3:47-16:53 0 0 0 -
2005 11 13 85 42 0.052 404 320 18 3:47-16:18 0 0 0 -
2005 11 14 82 37 0.058 355 200 12 3:47-15:48 32 930 170 6:00- 6:54
2005 11 15 80 33 0.064 314 140 9 3:47-15:24 51 1100 170 5:17- 7:12
2005 11 16 79 30 0.070 282 93 6 3:42-15:05 56 880 130 4:54- 7:12
2005 11 17 77 28 0.077 254 64 4 3:42-14:48 56 650 90 4:42- 7:05
2005 11 18 76 25 0.084 231 46 3 3:42-14:30 54 470 69 4:30- 7:05
2005 11 19 75 23 0.091 211 33 3 3:36-14:18 51 350 51 4:17- 7:00
2005 11 20 75 22 0.098 195 24 2 3:36-14:05 48 260 39 4:12- 6:54
2005 11 21 74 20 0.105 180 18 1 3:30-14:00 44 190 31 4:05- 6:47
Arecibo SNRs have been adjusted to reflect current transmitter power of about 500 kW.
Goldstone Track Assignments
2005 JE46 Goldstone tracks
UT UT PST Duration
DOY Date TX Window TX Window AST TX Window (hh:mm)
--- ---- --------- ------------- ------------- -------
306 Nov 02 1425-1710 0625-0910 Nov 02 1025-1310 Nov 02 2:45
310 Nov 06 1525-2015 0725-1215 Nov 06 1125-1615 Nov 06 4:50
311 Nov 07 1130-1530 0330-0730 Nov 07 0730-1130 Nov 07 4:00
317 Nov 13 1320-1555 0520-0755 Nov 13 0920-1155 Nov 13 2:35
1862 Apollo Goldstone tracks
306 Nov 02 1310-1710 0510-0910 Nov 02 0910-0310 Nov 02 4:00
310 Nov 06 1525-2015 0725-1215 Nov 06 1125-1615 Nov 06 4:50
311 Nov 07 1130-1530 0330-0730 Nov 07 0730-1130 Nov 07 4:00
317 Nov 13 1320-1730 0520-0930 Nov 13 0920-1330 Nov 13 4:10
Uncertainties
From Horizons: 2005 October 10, solution 21, # obs: 104 (1984-2005):
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig
2005-Nov-02 00:00 233.16744 34.69230 0.0574083311 71.1062448 6.32 22.60 0.017209
2005-Nov-03 00:00 230.50651 39.47076 0.0517936641 83.9088391 5.73 20.49 0.015401
2005-Nov-04 00:00 226.67738 45.22489 0.0467069758 99.0769339 5.04 18.03 0.013122
2005-Nov-05 00:00 220.78688 52.02881 0.0423331897 115.893782 4.23 15.13 0.010258
2005-Nov-06 00:00 210.89846 59.64103 0.0389093130 132.110693 3.29 11.76 0.006811
2005-Nov-07 00:00 192.78324 66.92300 0.0367001288 143.586161 2.25 8.06 0.003490
2005-Nov-08 00:00 161.53230 70.84907 0.0359307192 145.799850 1.31 4.68 0.004256
2005-Nov-09 00:00 128.00926 68.37779 0.0366944474 137.334792 0.97 3.47 0.008087
2005-Nov-10 00:00 107.26662 61.76204 0.0389059001 121.482087 1.40 5.02 0.011719
2005-Nov-11 00:00 96.03210 54.40712 0.0423453364 103.456902 1.91 6.81 0.014573
2005-Nov-12 00:00 89.45737 47.72080 0.0467503308 86.9812666 2.26 8.08 0.016642
2005-Nov-13 00:00 85.23319 42.03887 0.0518844264 73.4952417 2.47 8.82 0.018085
2005-Nov-14 00:00 82.30992 37.32039 0.0575626198 63.0127226 2.57 9.18 0.019075
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons: 2005 October 13, solution 22, # obs: 108 (1984-2005):
2005-Nov-02 00:00 233.16503 34.69915 0.0574021544 19.5309671 2.34 8.36 0.005702
2005-Nov-03 00:00 230.50324 39.47879 0.0517882435 23.3628441 2.22 7.92 0.005212
2005-Nov-04 00:00 226.67260 45.23424 0.0467025060 27.9950552 2.07 7.41 0.004585
2005-Nov-05 00:00 220.77922 52.03940 0.0423299171 33.2779928 1.90 6.78 0.003781
2005-Nov-06 00:00 210.88476 59.65218 0.0389075156 38.6103476 1.68 6.01 0.002781
2005-Nov-07 00:00 192.75677 66.93252 0.0367000514 42.7804814 1.42 5.09 0.001668
2005-Nov-08 00:00 161.49094 70.85252 0.0359324688 44.3463987 1.14 4.09 0.001038
2005-Nov-09 00:00 127.97587 68.37432 0.0366979167 42.6765313 0.88 3.14 0.001798
2005-Nov-10 00:00 107.24727 61.75625 0.0389107991 38.5591928 0.68 2.42 0.002862
2005-Nov-11 00:00 96.02040 54.40165 0.0423513084 33.4909446 0.57 2.03 0.003760
2005-Nov-12 00:00 89.44954 47.71639 0.0467570534 28.6390880 0.53 1.91 0.004438
2005-Nov-13 00:00 85.22747 42.03555 0.0518916526 24.5253562 0.54 1.93 0.004930
2005-Nov-14 00:00 82.30547 37.31799 0.0575701756 21.2308100 0.56 2.00 0.005281
The improvement between solutions 21 and 22 is a direct result of astrometry obtained on October 12 at
Mauna Kea by Fabrizio Bernardi.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini: 2005 October 31, solution 26, # obs: 112 (1984-2005):
Date__(UT)__HR:MN POS_3sigma DOP_X-sig RT_delay-sig
2005-Nov-02 00:00 3.06302447 3.43 0.001599
2005-Nov-03 00:00 3.75865744 3.48 0.001525
2005-Nov-04 00:00 4.67959661 3.53 0.001426
2005-Nov-05 00:00 5.83575009 3.55 0.001292
2005-Nov-06 00:00 7.14606175 3.50 0.001112
2005-Nov-07 00:00 8.37474078 3.35 0.000890
2005-Nov-08 00:00 9.16723247 3.07 0.000653
2005-Nov-09 00:00 9.26845964 2.70 0.000478
2005-Nov-10 00:00 8.72877629 2.27 0.000461
2005-Nov-11 00:00 7.82636027 1.86 0.000568
2005-Nov-12 00:00 6.83851475 1.51 0.000700
2005-Nov-13 00:00 5.92669718 1.22 0.000814
2005-Nov-14 00:00 5.15003606 1.01 0.000905
Solution 26 utilizes astrometry reported at Andrushivka Astronomical Observatory (Ukraine)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From OSOD on stealth.gdscc.nasa.gov: 2005 November 11, solution 30:
Date Sigma
UT R.A. Dec. s Rdop s Rdel
YYYY mmm DD HH arcsec Hz us
--------------- ----------------- ------- -------
2005 Nov 13 13a 2.14E+00 1.20E+00 1.0E+00 1.2E+02
2005 Nov 13 14c 2.14E+00 1.20E+00 1.0E+00 1.2E+02
2005 Nov 13 15* 2.13E+00 1.19E+00 1.0E+00 1.2E+02
2005 Nov 13 16* 2.12E+00 1.19E+00 1.0E+00 1.2E+02
Setups
CW Setup
For the final track, let's start with 10 usec ranging using following setup:
127 x 64 10-usec single sample
------------------------------
baud 10 usec
code 127
gates 127
FFT 64
ncoh 2
bandwidth 394 Hz
resolution 6.15 Hz
TXOFF +60 Hz -> echo will be centered at +9.75 bins or in bin 32+10 = 42
Then we'll go to 1 usec and finish with 1/8 usec imaging. We aren't planning to do
any CW observations of 2005 JE46 on the final track.
----------------------------------------------------------------------------
Standard CW setup
-----------------
TX polarization RCP
RCV polarization LCP
Frequencies: 2
Dwell: 20 seconds
Bandwidth: 4000 Hz
Sampling interval: 1000 x 0.1 usec
VME FFT for PSD files: 8192 for 0.488-Hz resolution
Possible 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 +60 Hz -> echo will be centered at +9.75 bins or in bin 32+10 = 42
incoh sums 64 => 10.4 sec/record
---------------------------------------------------------------------------
127 x 64 11-usec single sample, 5.6-Hz resolution.
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
-------------------------------------------------------------------------
127 x 64 11-usec single sample, 11.2-Hz resolution
baud 11 usec
code 127
gates 127
PRP 1397
FFT 64
CLT 11
ncoh 1
bandwidth 715.8 Hz
resolution 11.2 Hz
TXOFF +60 -> echo would be centered at +5 bins w/perfect ephemeris
-------------------------------------------------------------------------
127 x 64 7-usec single sample
------------------------------
baud 7 usec
code 127
gates 127
PRP 889
FFT 64
CLT 11
ncoh 1
bandwidth 1124.9 Hz
resolution 17.6 Hz
TXOFF +60 -> echo would be centered at +3.4 bins w/perfect ephemeris
-------------------------------------------------------------------------
127 x 64 1-usec single sample
------------------------------
baud 1 usec
code 127
gates 127
PRP 127
FFT 64
CLT 13 & 14, about evenly divided
ncoh 15
bandwidth 525 Hz
resolution 8.2 Hz
TXOFF +50 -> echo would be centered at +6.1 bins w/perfect ephemeris
-------------------------------------------------------------------------------
0.125-usec ranging setup used in first UY4 track (DOY 213, Aug. 1)
------------------
setup JX1XS001 revised
baud 0.125 usec
code 127
gates 127
FFT 64
ncoh 984
bandwidth 64.016384 Hz
resolution 1.000256 Hz
TXOFF We used 10 Hz, placing COM in cell 32+10=42
Henceforth use 15 Hz, to put COM in 32+15=47
incoh sums 4 looks=> 8 sec/record => expect records per run ~ RTT/8
PFS CLT gate 21
_____________________________________________________________________
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
____________________________________________________________________
Instructions
NOTE: Data should be moved to the appropriate subdirectories in
stealth:/export/data0/rosema/2005JE46/raw/
2005 JE46 POINTING:
OSOD and predicts are at Goldstone on stealth:
/export/data2/osod/ops/2005je46/PRDX.OUT.s30
/PUNCH.OUT.s30
/EPH.OUT.s30
and have been copied to:
/export/data0/rosema/2005JE46/support/
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2005 11 13 317 120000 83.5930 39.6035 A 54.5 30
2005 11 13 317 130000 83.4637 39.4037 A 54.8
2005 11 13 317 140000 83.3385 39.2045 A 0.0019 -0.0030 55.0
2005 11 13 317 150000 83.2179 39.0062 A 55.3
2005 11 13 317 160000 83.1021 38.8091 A 55.5
PRDX.OUT.s30
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2005 NOV 13 13:20 54.8441485815 -577792.140 52.4428 39.3373 83.421 48.729
2005 NOV 13 13:30 54.8846751941 -578562.804 54.9706 39.3040 83.401 46.811
2005 NOV 13 13:40 54.9252548895 -579306.489 57.4982 39.2709 83.380 44.900
2005 NOV 13 13:50 54.9658857391 -580022.341 60.0257 39.2377 83.359 42.998
2005 NOV 13 14:00 55.0065657635 -580709.556 62.5531 39.2045 83.339 41.105
2005 NOV 13 14:10 55.0472929356 -581367.385 65.0804 39.1714 83.318 39.221
2005 NOV 13 14:20 55.0880651639 -581995.136 67.6075 39.1383 83.298 37.347
2005 NOV 13 14:30 55.1288803241 -582592.172 70.1345 39.1052 83.278 35.485
2005 NOV 13 14:40 55.1697362358 -583157.915 72.6614 39.0722 83.258 33.634
2005 NOV 13 14:50 55.2106306937 -583691.849 75.1882 39.0392 83.238 31.796
2005 NOV 13 15:00 55.2515614445 -584193.514 77.7148 39.0062 83.218 29.971
2005 NOV 13 15:10 55.2925262193 -584662.516 80.2413 38.9732 83.198 28.161
2005 NOV 13 15:20 55.3335227091 -585098.521 82.7676 38.9403 83.179 26.366
2005 NOV 13 15:30 55.3745485980 -585501.258 85.2938 38.9075 83.159 24.588
2005 NOV 13 15:40 55.4156015462 -585870.519 87.8199 38.8747 83.140 22.826
2005 NOV 13 15:50 55.4566791949 -586206.163 90.3459 38.8419 83.121 21.082
2005 NOV 13 16:00 55.4977791912 -586508.109 92.8717 38.8091 83.102 19.358
GOLDSTONE MASTERLOG
==============================================================================
RCV
file setup runs start -stop osod OFFSET TX Poln
------------------------------------------------------------------------------
November 2 (DOY 306)
CW 2 hops, 10 kHz, 2k FFT 20s dwell 9 145354-150907 26 none RCP VME & PFS
CW 2 hops, 10 kHz, 16k FFT, 20s dwell 5 151140-151942 26 none RCP VME & PFS
10 us, 127 code ncoh= 2 7 155950-161130 26 +60 Hz RCP PFS; VME didn't work
11 us, 127 code ncoh= 2 10 162745-164449 26 +60 Hz RCP PFS; VME didn't work
1/8 us 127 code ncoh= 984 8 165645-171013 26 +15 Hz RCP PFS; VME didn't work
VME ranging data on this day are BAD due to a problem with a baud integrator.
------------------------------------------------------------------------------
November 6 (DOY 310)
CW 2 hops, 10 kHz, 16k FFT, 20s dwell 10 154547-155748 28 none RCP VME & PFS
10 us, 127 code ncoh= 2 10 162028-163228 28 +60 Hz RCP PFS; VME didn't work
1 us, 127 code ncoh= 15 10 165817-171015 28 +60 Hz ? RCP PFS & VME
1/8 us 127 code ncoh= 984 128 173351-201526 28 +15 Hz RCP PFS & VME
------------------------------------------------------------------------------
November 7 (DOY 311)
1/8 us 127 code ncoh= 984 105 132120-153018 30 +15 Hz RCP PFS & VME
------------------------------------------------------------------------------
November 13 (DOY 317)
10 us, 127 code ncoh= 2 5 132148-133009 30 +60 Hz RCP PFS; VME didn't work
1 us, 127 code ncoh= 15 6 133240-140623 30 +60 Hz ? RCP PFS & VME
1/8 us 127 code ncoh= 984 38 142933-153938 30 +15 Hz RCP PFS & VME
==============================================================================
RADAR ASTROMETRY
2005 11 13 14:30:00 R 55.1288507 1.0 8560.D6 -14 Benner, L.A.M.
Correction of -29.6 us to soln 30 from 1/8, 1, and 10 usec ranging.
Place COM at TE of echo, which is about 18 1/8 usec rows deep.
2005 11 06 16:50:00 R 37.130312 2.0 8560.D6 -14 Benner & Busch
Correction of -47 usec to soln 28 from 10 usec and 1 usec ranging.
2005 11 02 16:20:00 R 53.427640 20.0 8560.D6 -14 Benner, L.A.M.
Correction of -100 usec to soln 26 from 10 and 11 usec ranging
with the PFS.
==============================================================================
Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 300-233 | FAX: (818) 354-9476
Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov
Pasadena, CA 91109-8099 | Plan: To live long and prosper
http://echo.jpl.nasa.gov/asteroids/1992UY4/goldstone/html/1992UY4_planning.html
Asteroid Radar Astronomy