2005 EU2 Planning
Background
2005 EU2 was discovered by the Catalina Sky Survey in Arizona on March 4, 2005.
It will approach within 0.016 AU (6.2 lunar distances) on April 5. Its physical
properties are unknown but its absolute magnitude of 22.7 suggests a diameter within a
factor of two of 0.1 km.
Goldstone images obtained on April 1 suggest a diameter that is close to 300 meters and
a rotation period of roughly 3-4 hours.
These will be combined Goldstone and Arecibo observations.
Goldstone observations are scheduled on April 1 and April 2/3, and
Arecibo observations are scheduled on March 26/27, 27/28, April 2, 3, 10, and 13.
New Goldstone tracks have been added on April 5-6, 7-8, and 9-10 through the help of
Tim Gregor, Mike Klein, and Tom Kuiper, who graciously relinquished their time so
we could observe 2005 EU2.
Prior to the radar observations, 2005 EU2 had several "virtual impactors" during the
2070s-2090s that had low probabilities of impacting Earth. Radar astrometry
has significantly improved the orbit and has shown that 2005 EU2 cannot impact Earth
during the interval over which the orbit can be reliably integrated. Stated in other words,
JPL maintains a "Sentry" website (http://neo.jpl.nasa.gov/risk/) that lists potential impactors.
Now, due to radar observations, 2005 EU2 has been removed from that list.
Orbital and Physical Characteristics
orbit type Apollo
semimajor axis 1.504 AU
eccentricity 0.352
inclination 4.62°
perihelion distance 0.975 AU
aphelion distance 2.033 AU
absolute magnitude (H) 22.7
diameter ~0.3 km
rotation period ~3-4 hours
pole direction unknown
lightcurve amplitude unknown
spectral class unknown
Last updated: 2005 April 13
Discovery
M.P.E.C. 2005-E25 Issued 2005 Mar. 5, 13:30 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 EU2
Observations:
K05E02U* C2005 03 04.23826 08 52 50.25 -04 59 58.5 19.3 R EE025703
K05E02U C2005 03 04.24840 08 52 48.84 -04 59 54.3 19.4 R EE025703
K05E02U C2005 03 04.25853 08 52 47.75 -04 59 51.0 19.0 R EE025703
K05E02U C2005 03 04.26861 08 52 46.40 -04 59 46.4 18.3 R EE025703
K05E02U C2005 03 04.84262 08 51 51.75 -04 55 55.2 EE025246
K05E02U C2005 03 04.84736 08 51 51.12 -04 55 53.6 EE025246
K05E02U C2005 03 04.84813 08 51 51.03 -04 55 52.1 EE025246
K05E02U C2005 03 04.85185 08 51 50.58 -04 55 50.6 EE025246
K05E02U C2005 03 04.85704 08 51 50.02 -04 55 49.0 EE025246
K05E02U C2005 03 05.12301 08 51 24.52 -04 53 39.5 20.1 V EE025H36
K05E02U C2005 03 05.13477 08 51 23.07 -04 53 34.5 20.0 V EE025H36
K05E02U C2005 03 05.14447 08 51 21.89 -04 53 31.2 19.3 V EE025H36
Observer details:
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha. Measurer M. Tichy.
1.06-m KLENOT Telescope + CCD.
703 Catalina Sky Survey. Observer E. J. Christensen. Measurers E. C. Beshore,
C. M. Casey, E. J. Christensen, G. J. Garradd, R. E. Hill, S. M. Larson,
R. H. McNaught. 0.68-m Schmidt + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.3-m f/6
Schmidt-Cassegrain + CCD.
Orbital elements:
2005 EU2
Epoch 2005 Feb. 19.0 TT = JDT 2453420.5 MPC
M 328.85840 (2000.0) P Q
n 0.50143829 Peri. 25.38001 -0.81609430 +0.57772906
a 1.5691256 Node 189.95128 -0.54376628 -0.77629136
e 0.3817917 Incl. 4.91504 -0.19572512 -0.25219209
P 1.97 H 22.6 G 0.15
From 12 observations 2005 Mar. 4-5.
Ephemeris:
2005 EU2 a,e,i = 1.57, 0.38, 5 q = 0.9700
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2005 03 01 08 57.93 -05 17.0 0.138 1.112 149.7 26.7 19.7
2005 03 11 08 40.81 -03 48.5 0.096 1.067 138.3 38.3 19.2
2005 03 21 08 14.79 +00 32.0 0.057 1.029 123.3 54.0 18.4
2005 03 31 06 36.85 +19 37.2 0.022 0.999 88.4 90.4 17.5
2005 04 10 22 58.39 +28 30.3 0.030 0.979 38.1 140.8 21.9
2005 04 20 21 53.84 +17 55.5 0.067 0.970 57.6 119.0 21.4
2005 04 30 21 43.61 +14 50.3 0.106 0.974 68.7 105.5 21.6
2005 05 10 21 43.53 +13 36.3 0.143 0.989 77.6 94.3 21.7
2005 05 20 21 45.61 +12 59.3 0.176 1.015 86.0 84.1 21.8
2005 05 30 21 46.84 +12 31.1 0.204 1.050 94.6 74.3 21.8
2005 06 09 21 45.09 +11 52.3 0.227 1.092 104.0 64.4 21.9
2005 06 19 21 39.03 +10 43.5 0.246 1.140 114.5 54.2 21.8
2005 06 29 21 28.38 +08 51.9 0.265 1.193 126.2 43.5 21.8
2005 07 09 21 13.74 +06 10.7 0.287 1.247 138.9 32.4 21.7
2005 07 19 20 57.24 +02 47.6 0.317 1.304 151.6 21.7 21.7
2005 07 29 20 41.69 -00 53.1 0.358 1.360 162.0 13.4 21.8
2005 08 08 20 29.40 -04 24.7 0.414 1.417 164.3 11.2 22.1
2005 08 18 20 21.84 -07 26.9 0.485 1.472 157.7 15.1 22.7
2005 08 28 20 19.17 -09 51.3 0.571 1.527 148.7 20.1 23.3
Timothy B. Spahr (C) Copyright 2005 MPC M.P.E.C. 2005-E25
SNR Calculation
Target Name: 2005EU2
HMag: 22.7
Diameter: 0.091
Period: 0.5
------------GOLDSTONE---------- -------------ARECIBO-----------
Max Max
Dat Run UTC Dat Run UTC
Date RA Decl Delta Runs SNR SNR Window Runs SNR SNR Window
2005 3 21 124 0 0.061 247 2 0 23:53-32:30 34 24 5 0:24- 1:23
2005 3 22 123 1 0.057 262 3 0 23:41-32:23 40 34 6 0:12- 1:23
2005 3 23 123 2 0.053 280 3 0 23:30-32:17 47 48 8 23:53-25:18
2005 3 24 121 3 0.050 299 4 0 23:23-32:17 55 70 11 23:41-25:18
2005 3 25 120 4 0.046 322 6 0 23:11-32:12 64 103 15 23:23-25:11
2005 3 26 119 5 0.043 347 8 0 22:53-32:06 74 151 19 23:11-25:11
2005 3 27 117 6 0.039 377 11 1 22:41-32:00 85 221 26 22:53-25:06
2005 3 28 115 8 0.036 412 16 1 22:23-31:48 97 328 36 22:41-25:00
2005 3 29 113 10 0.033 453 24 1 22:06-31:41 112 499 50 22:23-24:48
2005 3 30 110 12 0.029 501 36 2 21:48-31:36 128 771 72 22:00-24:36
2005 3 31 107 15 0.026 558 55 3 21:18-31:23 144 1209 106 21:41-24:23
2005 4 1 102 19 0.024 626 88 4 20:48-31:11 160 1908 159 21:18-24:00
2005 4 2 96 23 0.021 700 138 6 20:06-30:53 172 2949 238 20:48-23:30
2005 4 3 87 28 0.019 700 206 8 19:18-30:30 169 4207 347 20:18-22:41
2005 4 4 76 34 0.017 700 278 11 18:11-29:53 138 4616 451 19:48-21:36
2005 4 5 62 39 0.016 700 329 14 16:53-29:06 23 1526 320 -
2005 4 6 44 42 0.016 700 327 13 15:35-28:06 0 0 0 -
2005 4 7 27 42 0.017 700 272 11 14:24-26:53 0 0 0 -
2005 4 8 13 40 0.019 700 198 8 13:30-25:48 0 0 0 -
2005 4 9 2 37 0.021 700 134 6 12:48-24:53 72 1257 159 15:00-15:54
2005 4 10 354 35 0.024 700 87 4 12:18-24:06 105 1254 139 14:00-15:41
2005 4 11 348 32 0.027 631 55 2 12:00-23:30 116 977 101 13:24-15:24
2005 4 12 344 30 0.030 569 36 2 11:41-23:00 117 685 68 12:54-15:11
2005 4 13 340 28 0.033 517 24 1 11:30-22:36 114 475 48 12:30-15:00
2005 4 14 338 26 0.037 472 16 1 11:24-22:18 109 332 34 12:11-14:48
2005 4 15 336 25 0.040 434 11 1 11:11-22:00 103 236 25 12:00-14:35
2005 4 16 334 23 0.044 400 8 0 11:05-21:48 97 171 18 11:48-14:30
2005 4 17 332 22 0.047 372 6 0 11:00-21:36 92 126 14 11:35-14:18
2005 4 18 331 21 0.051 347 4 0 10:54-21:23 87 95 11 11:30-14:11
2005 4 19 330 21 0.055 325 3 0 10:48-21:18 82 72 8 11:18-14:00
2005 4 20 329 20 0.058 305 3 0 10:41-21:06 76 55 7 11:11-13:54
2005 4 21 329 19 0.062 288 2 0 10:35-21:00 72 44 5 11:05-13:48
2005 4 22 328 19 0.066 272 2 0 10:30-20:48 70 35 4 11:00-13:41
2005 4 23 328 18 0.069 258 1 0 10:30-20:41 66 28 4 10:54-13:35
2005 4 24 327 18 0.073 246 1 0 10:24-20:36 62 23 3 10:48-13:30
Goldstone Track Assignments
2005 EU2 Goldstone tracks
UT UT PST or PDT Duration
DOY Date TX Window TX Window AST TX Window (hh:mm)
--- ---- --------- ------------- ------------- -------
091 Apr 01 0130-0705 1730-2305 PST Thu Mar 31 2130-0305 Mar 31-Apr 1 5:35
092-093 Apr 02-03 1935-0630 1135-2230 PST Sat Apr 2 1535-0230 Apr 2-3 10:55
NEW TRACKS
095-096 Apr 5-6 2300 0355 1600-2055 PDT Tue Apr 5 1900-2355 Apr 5 4:55 includes normal precal time
097-098 Apr 7-8 2300 0140 1600-1840 PDT Thu Apr 7 1900-2140 Apr 7 2:40 includes normal precal time
099-100 Apr 9-10 1830 0000 1130-1700 PDT Sat Apr 9 1430-2000 Apr 9 5:30 includes normal precal time
For the latter three tracks, we have transmit authorization from the moment we get the telescope,
so we can start transmitting as soon as precal is done.
1999 RR28 tracks occur at Goldstone on two of the same dates:
091 Apr 01 0130-0705 1730-2305 PST Thu Mar 31 2130-0305 Mar 31-Apr 1 5:35
092-093 Apr 02-03 2325-0920 1525-0120 PST Sat-Sun Apr 2-3 1925-0520 Apr 2-3 9:55
2005 EU2 Arecibo Tracks
085-086 Mar 26-27 2256-0102 1456-1702 PST Sat Mar 26 1856-2102 Mar 26 2:06
086-087 Mar 27-28 2239-0055 1439-1655 PST Sun Mar 27 1839-2055 Mar 27 2:16
092 Apr 2 2023-2248 1223-1448 PST Sat Apr 2 1623-1848 Apr 2 2:25 CANCELLED
093 Apr 3 1954-2144 1254-1444 PDT Sun Apr 3 1554-1744 Apr 3 1:50 CANCELLED
100 Apr 10 1336-1532 0636-0832 PDT Sun Apr 10 0936-1132 Apr 10 1:56 CANCELLED
103 Apr 13 1222-1453 0522-0753 PDT Wed Apr 13 0822-1053 Apr 13 2:31 CANCELLED
Most of the Arecibo tracks were cancelled due to problems with the turbine.
Uncertainties
From Horizons (2005 March 21, solution 9):
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig
2005-Mar-25 00:00 120.48744 3.53681 0.0453663949 11.3835569 431.41 1543.03 0.239028
2005-Mar-26 00:00 119.15210 4.71497 0.0419949884 15.9579994 426.30 1524.75 0.223462
2005-Mar-27 00:00 117.59787 6.09269 0.0386638918 22.3483231 419.91 1501.90 0.208076
2005-Mar-28 00:00 115.75933 7.72074 0.0353852226 31.3209796 411.70 1472.52 0.192908
2005-Mar-29 00:00 113.54523 9.66569 0.0321762680 44.0027997 400.85 1433.73 0.178006
2005-Mar-30 00:00 110.82553 12.01407 0.0290618979 62.0496233 386.19 1381.27 0.163431
2005-Mar-31 00:00 107.41091 14.87494 0.0260782800 87.8497996 365.91 1308.75 0.149263
2005-Apr-01 00:00 103.02072 18.37472 0.0232784693 124.649731 337.37 1206.67 0.135601
2005-Apr-02 00:00 97.23704 22.62787 0.0207401964 176.191413 296.80 1061.55 0.122567
2005-Apr-03 00:00 89.45581 27.64710 0.0185745246 244.806662 239.46 856.47 0.110332
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons (2005 March 23, solution 10, #obs = 47, 19 days):
2005-Mar-25 00:00 120.48716 3.53729 0.0453176596 3.67046073 278.17 994.94 0.144860
2005-Mar-26 00:00 119.15165 4.71562 0.0419493658 5.04558758 274.91 983.27 0.134835
2005-Mar-27 00:00 117.59718 6.09359 0.0386213488 7.06400329 270.83 968.66 0.124938
2005-Mar-28 00:00 115.75828 7.72197 0.0353457201 10.0156055 265.56 949.84 0.115200
2005-Mar-29 00:00 113.54366 9.66738 0.0321397581 14.3266897 258.61 924.97 0.105663
2005-Mar-30 00:00 110.82320 12.01641 0.0290283224 20.6280848 249.20 891.31 0.096387
2005-Mar-31 00:00 107.40742 14.87817 0.0260475669 29.8407398 236.18 844.74 0.087451
2005-Apr-01 00:00 103.01547 18.37916 0.0232505301 43.2402142 217.84 779.16 0.078969
2005-Apr-02 00:00 97.22906 22.63385 0.0207149222 62.3500604 191.77 685.89 0.071095
2005-Apr-03 00:00 89.44359 27.65475 0.0185517783 88.2612751 154.90 554.03 0.064042
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini (2005 March 30, solution 20):
2005 EU2, w/56 opt. obs (2005-Mar-4 to 2005-Mar-27), 2 delay,
1 Doppler, sol #20 3-sigma uncertainties:
Date__(UT)__HR:MN POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig
2005-Apr-01 00:00 2.64822166 0.13 0.47 0.000039
2005-Apr-02 00:00 3.12146704 0.13 0.46 0.000064
2005-Apr-03 00:00 3.60689334 0.15 0.55 0.000099
2005-Apr-04 00:00 4.00537902 0.21 0.75 0.000145
Setups
CW Setup
TX polarization RCP
RCV polarization LCP
Frequencies: 2
Dwell: 10 seconds (!) NOTE THE SHORT DWELL!
Bandwidth: 4000 Hz
Sampling interval: 2500 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 JX1XS001
baud 0.125 usec
code 127
gates 127
FFT 64
ncoh 1968
bandwidth 32.008 Hz
resolution 0.5001 Hz
TXOFF 6 Hz = 12 cells, => cell 44
incoh sums 4 looks=> 8 sec/record => expect records per run ~ RTT/8
CLT gate 34.8
_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n)
These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
Currently configured for 5-sec records.
_______________________________________________________________________
Setup Baud RP 1-acc 1-acc
usec m usec band res acc band res
_______________________________________________________________________
JX1XS110 11.000 1650 1397.0 715.8 11.2 2 358 5.6
JX1XS070 7.000 1050 889.0 1124.9 17.6 3 375 5.9
JX1XS020 2.000 300 254.0 3937.0 61.5 12 328 5.1
4 984 15.4
JX1XS010 1.000 150 127.0 7874.0 123.0 41 192 3.0
8 984 15.4
JX1XS005 0.500 75 63.5 15748.0 246.1 123 128 2.0
15 1050 16.4
JX1XS002 0.250 37.5 31.75 31496.1 492.1 492 64 1.0
30 1050 16.4
JX1XS001 0.125 18.75 15.875 62992.1 984.3 1970 32 0.5
60 1050 16.4
____________________________________________________________________
Instructions
NOTE: Data should be moved to the appropriate subdirectories in
stealth:/export/data0/rosema/2005EU2/raw/
2005 EU2 POINTING:
OSOD and predicts are at Goldstone on stealth:
/export/data2/osod/ops/2005EU2/PRDX.OUT.s28
/PUNCH.OUT.s28
/EPH.OUT.s28
and have been copied to:
/export/data0/rosema/2005EU2/support/
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2005 04 09 099 180000 357.6513 36.1633 A 21.7 22
2005 04 09 099 190000 357.2929 36.0426 A 0.0021 -0.0007 21.8
2005 04 09 099 200000 356.9403 35.9185 AB 21.9
2005 04 09 099 210000 356.5954 35.7912 B 0.0021 -0.0008 22.0
2005 04 09 099 220000 356.2601 35.6615 BC 22.1
2005 04 09 099 230000 355.9355 35.5301 C 0.0020 -0.0008 22.3
2005 04 10 100 000000 355.6223 35.3981 C 22.4
PRDX.OUT.s28
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2005 APR 09 18:30 21.7507888773 -252111.167 1.2332 36.1030 357.472 88.792
2005 APR 09 18:40 21.7684961961 -253137.379 3.7997 36.0828 357.412 86.847
2005 APR 09 18:50 21.7862753709 -254161.198 6.3661 36.0626 357.352 84.795
2005 APR 09 19:00 21.8041261779 -255181.022 8.9324 36.0422 357.293 82.726
2005 APR 09 19:10 21.8220482810 -256195.253 11.4984 36.0218 357.234 80.652
2005 APR 09 19:20 21.8400412325 -257202.305 14.0643 36.0012 357.175 78.576
2005 APR 09 19:30 21.8581044757 -258200.606 16.6300 35.9806 357.116 76.501
2005 APR 09 19:40 21.8762373390 -259188.597 19.1956 35.9598 357.057 74.426
2005 APR 09 19:50 21.8944390493 -260164.742 21.7609 35.9390 356.999 72.354
2005 APR 09 20:00 21.9127087211 -261127.525 24.3260 35.9181 356.940 70.283
2005 APR 09 20:10 21.9310453657 -262075.459 26.8909 35.8971 356.882 68.216
2005 APR 09 20:20 21.9494478906 -263007.081 29.4556 35.8760 356.825 66.152
2005 APR 09 20:30 21.9679151043 -263920.965 32.0200 35.8548 356.767 64.091
2005 APR 09 20:40 21.9864457104 -264815.716 34.5842 35.8335 356.710 62.035
2005 APR 09 20:50 22.0050383239 -265689.977 37.1482 35.8122 356.653 59.984
2005 APR 09 21:00 22.0236914602 -266542.432 39.7119 35.7908 356.596 57.937
2005 APR 09 21:10 22.0424035461 -267371.808 42.2753 35.7694 356.539 55.897
2005 APR 09 21:20 22.0611729222 -268176.876 44.8385 35.7478 356.483 53.862
2005 APR 09 21:30 22.0799978411 -268956.455 47.4014 35.7262 356.427 51.834
2005 APR 09 21:40 22.0988764765 -269709.416 49.9640 35.7046 356.371 49.813
2005 APR 09 21:50 22.1178069260 -270434.680 52.5263 35.6829 356.315 47.799
2005 APR 09 22:00 22.1367872104 -271131.224 55.0883 35.6611 356.260 45.794
2005 APR 09 22:10 22.1558152823 -271798.081 57.6500 35.6393 356.205 43.797
2005 APR 09 22:20 22.1748890305 -272434.344 60.2114 35.6174 356.151 41.810
2005 APR 09 22:30 22.1940062804 -273039.164 62.7726 35.5956 356.097 39.833
2005 APR 09 22:40 22.2131647962 -273611.755 65.3334 35.5736 356.043 37.866
2005 APR 09 22:50 22.2323622991 -274151.397 67.8938 35.5517 355.989 35.910
2005 APR 09 23:00 22.2515964520 -274657.430 70.4540 35.5297 355.936 33.967
2005 APR 09 23:10 22.2708648782 -275129.265 73.0139 35.5077 355.883 32.036
2005 APR 09 23:20 22.2901651635 -275566.377 75.5734 35.4857 355.830 30.119
2005 APR 09 23:30 22.3094948580 -275968.312 78.1326 35.4637 355.778 28.216
2005 APR 09 23:40 22.3288514797 -276334.684 80.6915 35.4417 355.726 26.328
2005 APR 09 23:50 22.3482325267 -276665.177 83.2500 35.4197 355.674 24.456
2005 APR 10 00:00 22.3676354747 -276959.547 85.8082 35.3977 355.623 22.601
GOLDSTONE MASTERLOG
==============================================================================
RCV
file setup runs start -stop osod OFFSET TX Poln
------------------------------------------------------------------------------
April 1
CW 2 hops, 4 kHz, 10s dwell 21 014359-020021 20 none RCP VME & PFS
10 us, 127 code, ncoh=2 6 023800-024221 20 +60 Hz RCP VME & PFS
1 us, 127 code, ncoh=20 6 030029-030448 20 +60 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 30 033708-040045 20 +4 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 123 040721-054539 22 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
April 2-3
CW 2 hops, 4 kHz, 10s dwell 30 202434-204412 22 none RCP VME & PFS
1 us, 127 code, ncoh=20 8 211524-212021 22 +60 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 208 214446-000503 22 +4 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 111 005135-020514 22 +4 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 33 022239-024417 22 +4 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 233 032244-055743 22 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
April 5-6
CW 2 hops, 4 kHz, 10s dwell 20 001447-002546 22 none RCP VME & PFS
1 us, 127 code, ncoh=20 5 005055-005324 22 +60 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 43 011348-013746 22 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
April 7-8
1/8 us 127 code ncoh=3936 62 233120-001029 26 +4 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 81 004908-014010 26 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
April 9-10
1/8 us 127 code ncoh=3936 200 194132-221454 28 +4 Hz RCP VME & PFS
1/8 us 127 code ncoh=3936 113 222835-235501 28 +4 Hz RCP VME & PFS
==============================================================================
RADAR ASTROMETRY
2005 04 01 03:00:00 R 22.862012 1.0 8560.D6 -14 Benner, L.A.M.
Correction of -8 usec from 10 usec and 1 usec ranging.
2005 04 06 01:20:00 R 15.7939710 0.5 8560.D6 -14 Benner, L.A.M.
Correction of +2.5 usec from 1.0 and 1/8 usec imaging. Place COM at TE of
echo, which is about 9 gates deep.
2005 04 07 23:50:00 R 17.886435611 0.5 8560.D6 -14 Benner, L.A.M.
Correction of -5/8 usec to soln 26 from 42 runs of 1/8 usec imaging.
Placed COM at TE of echo, which is about 10 gates deep.
2005 04 09 23:30:00 R 22.309493983 0.5 8560.D6 -14 Benner, L.A.M.
Correction of -7/8 usec to soln 28 from 1/8 usec imaging. Placed COM
at the TE of echo, which is about 8 gates deep.
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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@reason.jpl.nasa.gov
Pasadena, CA 91109-8099 | Plan: To live long and prosper
Asteroid Radar Astronomy