4660_Nereus Planning
We detected Nereus echoes (cw, ranging, and coarse imaging) at Arecibo in Dec. 2001.
We plan high-resolution imaging at Arecibo during Jan. 9-14 and at Goldstone during Jan. 15-29, to ensure thorough orientational coverage of the object.
The Goldstone tracks cover Nereus's 0.029-AU approach. This is its closest approach until 2060, so our experiment is critical.
Orbital and Physical Characteristics
orbit type Apollo
semimajor axis 1.490 AU
eccentricity 0.360
inclination 1.424°
perihelion dist. 0.953 AU
aphelion dist. 2.026 AU
abs. mag. (H) 18.2 mag
diameter 0.7 to 1.5 km
rotation period 15.1 +/- 1.2 h
lightcurve amp. 0.9 mag
spectral class unknown
Nereus's 0.029-AU approach in Jan. 2002 is its closest until 2060.
Circular No. 3675 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Postal Address: Central Bureau for Astronomical Telegrams Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. TWX 710-320-6842 ASTROGRAM CAM Telephone 617-864-5758 ... 1982 DB Another fast-moving asteroidal object has been discovered by E. Helin with the 1.2-m Palomar Schmidt telescope. Positions are: 1982 UT R. A. (1950) Decl. Mag. Observer Feb. 28.45764 13 45 42.48 -18 20 07.8 16 Helin 28.49236 13 45 36.17 -18 19 48.1 " Mar. 4.43672 13 36.0 -17 40 16 Bowell E. Helin and E. Shoemaker (Palomar Observatory). Measurers: Helin and R. S. Dunbar. E. Bowell (Lowell Observatory, Anderson Mesa station). ... 1982 March 5 (3675) Brian G. Marsden
ARECIBO
Duration Rotation
Jan UTC AST RA Dec AU RunSNR (h) (°)
09 1846-2042 1446-1642 337 4 0.050 720 1.93 46
10 1840-2027 1440-1627 335 3 0.047 860 1.78 42
11 1825-2012 1425-1612 333 3 0.045 990 1.78 42
12 1819-1957 1419-1557 331 2 0.042 1100 1.63 39
13 1813-1933 1413-1533 328 1 0.040 1300 1.33 32
14 1807-1909 1407-1509 325 -0 0.038 1400 1.03 25
GOLDSTONE
UTC PST
15 1730-2205 0930-1405 321 -1 0.036 100 4.58 109
18 1645-0005 0845-1605 308 -6 0.031 170 7.33 175
19 1630-2335 0830-1535 303 -8 0.030 190 7.08 169
20 1635-2300 0835-1500 298 -10 0.029 200 6.42 153
22 1530-2005 0730-1205 286 -13 0.029 210 4.58 109
23 1505-1950 0705-1150 280 -15 0.029 200 4.75 113
24 1445-1730 0645-0930 274 -16 0.030 190 2.75 66
25 1425-1855 0625-1055 268 -17 0.031 170 4.50 107
26 1405-1915 0605-1115 263 -18 0.032 150 5.17 123
27 1345-1910 0545-1110 258 -19 0.033 120 5.42 129
29 1315-1830 0515-1030 250 -20 0.037 88 5.25 125
2001 Dec 11, 01 10:49:47 AM
For new solution #18, with 244 obs 1981-Sep-30 to 2001-Dec-10,
3-sigma uncertainties are:
DATE Pointing S-band Dop Delay
(") Hz (sec)
----------------- --------- ---------- ----------
18-DEC-2001 00:00 1.467 < 1.000 0.002200
19-DEC-2001 00:00 1.559 < 1.000 0.002210
20-DEC-2001 00:00 1.658 < 1.000 0.002220
-----------------------------------------------------
2002 Jan 03
With a single Doppler, two delays, and additional optical data now
spanning 1981-Sep-30 to 2002-Jan-2, solution #24 has these
3-standard-deviation S-band uncertainties:
DATE Pointing S-band Dop Delay
(") Hz (sec)
----------------- --------- ---------- ----------
8-JAN-2002 00:00 1.627 <1.000 0.000046
10-JAN-2002 00:00 1.860 <1.000 0.000067
12-JAN-2002 00:00 2.128 <1.000 0.000097
-----------------------------------------------------
2002 Jan 10
Using the solution #26 Steve generated, with 277 optical
obs from (Sep 30, 1981 to Jan 2, 2002), 3 delay and one Doppler,
3-sigma X-band uncertainties are shown below.
OSOD/files have been established at Goldstone (intruder).
DATE Pointing X-band Dop Delay
(") Hz (sec)
----------------- --------- ---------- ----------
8-JAN-2002 00:00 1.627 <1.000 0.000046
10-JAN-2002 00:00 1.337 <1.000 0.000012
12-JAN-2002 00:00 1.522 <1.000 0.000023
14-JAN-2002 00:00 1.731 <1.000 0.000041
16-JAN-2002 00:00 1.954 <1.000 0.000068
18-JAN-2002 00:00 2.162 <1.000 0.000102
20-JAN-2002 00:00 2.289 <1.000 0.000143
22-JAN-2002 00:00 2.287 <1.000 0.000187
24-JAN-2002 00:00 2.166 <1.000 0.000225
26-JAN-2002 00:00 1.976 <1.000 0.000254
28-JAN-2002 00:00 1.796 <1.000 0.000273
30-JAN-2002 00:00 1.641 <1.000 0.000284
-----------------------------------------------------
With 282 optical observations spanning 30-SEP-1981 to 4-JAN-2002
5 delay and 2 Doppler, 4660 Nereus solution #30 was computed. 3-sigma
X-band uncertainties are shown below. Files have been updated
at Goldstone and Arecibo.
Note TPM prediction error is one of the uncalibrated error
sources not included in these uncertainty predictions. This is why
Doppler error is sometimes replaced by "<1.000" Hz when it gets
very small. Here I left it.
DATE Pointing X-band Dop Delay
(") Hz (sec)
----------------- --------- ---------- ----------
8-JAN-2002 00:00 1.331 0.178 0.000040
10-JAN-2002 00:00 1.157 0.130 0.000012
12-JAN-2002 00:00 1.084 0.124 0.000004
14-JAN-2002 00:00 1.227 0.133 0.000013
16-JAN-2002 00:00 1.385 0.157 0.000027
18-JAN-2002 00:00 1.540 0.194 0.000045
20-JAN-2002 00:00 1.654 0.240 0.000066
22-JAN-2002 00:00 1.691 0.283 0.000089
24-JAN-2002 00:00 1.647 0.315 0.000110
26-JAN-2002 00:00 1.536 0.330 0.000127
28-JAN-2002 00:00 1.408 0.328 0.000138
We will start with solution 38
CW setup:
TX polarization RCP
RCV polarization LCP
Frequencies: 2
Dwell: 15 seconds
Bandwidth: 2000 Hz
Sampling interval: 5000 x 0.1 usec
VME FFT for PSD files: 4096 for 0.48828125-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 TBD
incoh sums 64 => 10.4 sec/record
---------------------------------------------------------------------------
127 x 64 11-usec single sample.
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
-------------------------------------------------------------------------
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
____________________________________________________________________
RANGING SETUPS from Toutatis 1992: (code=255, FFT=256, 1 channel)
____________________________________________________________________
Setup Baud NACC bandwidth resolution 1/res'n nom
Hz Hz sec gate
____________________________________________________________________
TU1XS01 0.125 123 255.06 0.9963 1.00 34
890 35.25 0.1377 7.26
1471 21.327 0.08331 12.00
2210 14.196 0.05545 18.03
2942 10.664 0.04166 24.01
3309 9.4810 0.03704 27.00
3700 8.4791 0.03312 30.19
7400 4.2395 0.01656 60.38
14800 2.1198 0.00828 120.77
TU1XS02 0.25 123 127.5 0.498
TU1XS04 0.500 307 25.5 0.100
TU1XS08 1.000 153 25.6 0.100
TU1XS16 2.000 4 490.2 1.915
TU1XS32 4.000 2 490.2 1.915
TU1XS33 4.125 2 475.3 1.857
TU1XS80 10.000 1 392.2 1.532 11
TU1XS88 11.000 1 356.5 1.393 11
For these observations, we need the following files:
EPH.OUT.s38 (pointing predicts)
PRDX.OUT.s38
PUNCH.OUT.s38
These files were created in: intruder:/data/osod/ops/4660_Nereus
have been copied to: intruder:/d1/4660_Nereus/support/
POINTING
January 15
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 15 015 170000 321.9079 -1.2244 A 36.3 26
2002 01 15 015 180000 321.7483 -1.2795 A 36.2
2002 01 15 015 190000 321.5849 -1.3349 A 36.1
2002 01 15 015 200000 321.4182 -1.3905 A 0.0017 -0.0006 36.0
2002 01 15 015 210000 321.2493 -1.4463 A 35.9
2002 01 15 015 220000 321.0790 -1.5022 A 35.8
2002 01 15 015 230000 320.9084 -1.5584 A 35.8
January 18
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 18 018 160000 309.2024 -5.7529 A 31.5 26
2002 01 18 018 170000 308.9876 -5.8265 A 31.4
2002 01 18 018 180000 308.7683 -5.9000 A 0.0019 -0.0007 31.4
2002 01 18 018 190000 308.5455 -5.9734 A B 31.3
2002 01 18 018 200000 308.3202 -6.0466 A B 31.2
2002 01 18 018 210000 308.0935 -6.1195 B 31.2
2002 01 18 018 220000 307.8667 -6.1920 B 0.0020 -0.0007 31.1
2002 01 18 018 230000 307.6408 -6.2643 B 31.1
2002 01 19 019 000000 307.4170 -6.3363 B 31.1
2002 01 19 019 010000 307.1961 -6.4082 B 31.0
January 19
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 19 019 160000 304.0391 -7.5294 A 30.4 26
2002 01 19 019 170000 303.8050 -7.6070 A 30.3
2002 01 19 019 180000 303.5668 -7.6843 A 0.0020 -0.0006 30.3
2002 01 19 019 190000 303.3255 -7.7612 A 30.2
2002 01 19 019 200000 303.0821 -7.8376 AB 30.2
2002 01 19 019 210000 302.8379 -7.9135 B 30.1
2002 01 19 019 220000 302.5942 -7.9888 B 0.0020 -0.0006 30.1
2002 01 19 019 230000 302.3521 -8.0636 B 30.1
2002 01 20 020 000000 302.1126 -8.1380 B 30.1
January 20
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 20 020 160000 298.4875 -9.3671 A 29.5 26
2002 01 20 020 170000 298.2369 -9.4463 A 0.0021 -0.0006 29.5
2002 01 20 020 180000 297.9825 -9.5249 AB 29.5
2002 01 20 020 190000 297.7256 -9.6027 BC 0.0021 -0.0007 29.5
2002 01 20 020 200000 297.4673 -9.6798 BC 29.4
2002 01 20 020 210000 297.2089 -9.7561 C 0.0021 -0.0006 29.4
2002 01 20 020 220000 296.9518 -9.8315 C 29.4
2002 01 20 020 230000 296.6970 -9.9063 C 29.4
January 22 (CLOSEST APPROACH)
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 22 022 150000 286.8485 -12.8933 A 29.0 26
2002 01 22 022 160000 286.5826 -12.9675 A 0.0022 -0.0006 29.0
2002 01 22 022 170000 286.3133 -13.0407 AB 28.9
2002 01 22 022 180000 286.0417 -13.1126 B 0.0022 -0.0006 28.9
2002 01 22 022 190000 285.7691 -13.1832 BC 29.0
2002 01 22 022 200000 285.4967 -13.2525 C 0.0022 -0.0005 29.0
2002 01 22 022 210000 285.2260 -13.3204 C 29.0
January 23
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 23 023 150000 280.7541 -14.5250 A 29.2 26
2002 01 23 023 160000 280.4876 -14.5922 A 0.0021 -0.0006 29.2
2002 01 23 023 170000 280.2184 -14.6581 AB 29.2
2002 01 23 023 180000 279.9477 -14.7225 B 0.0022 -0.0005 29.2
2002 01 23 023 190000 279.6769 -14.7853 BC 29.2
2002 01 23 023 200000 279.4073 -14.8465 C 0.0022 -0.0005 29.2
2002 01 23 023 210000 279.1401 -14.9063 C 29.3
January 24
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 24 024 140000 275.0105 -15.9081 A 29.7 26
2002 01 24 024 150000 274.7526 -15.9676 A 29.7
2002 01 24 024 160000 274.4918 -16.0259 A 0.0022 -0.0005 29.7
2002 01 24 024 170000 274.2291 -16.0826 A 29.8
2002 01 24 024 180000 273.9658 -16.1377 A 29.8
January 25
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 25 025 140000 269.2255 -17.1417 A 30.6 26
2002 01 25 025 150000 268.9782 -17.1917 A 30.6
2002 01 25 025 160000 268.7286 -17.2402 A 30.6
2002 01 25 025 170000 268.4779 -17.2870 A 0.0021 -0.0004 30.7
2002 01 25 025 180000 268.2273 -17.3321 A 30.7
2002 01 25 025 190000 267.9783 -17.3754 A 30.8
2002 01 25 025 200000 267.7318 -17.4172 A 30.8
January 26
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 26 026 140000 263.7688 -18.1513 A 31.7 26
2002 01 26 026 150000 263.5360 -18.1917 A 31.8
2002 01 26 026 160000 263.3017 -18.2306 A 31.8
2002 01 26 026 170000 263.0669 -18.2678 A 0.0020 -0.0003 31.9
2002 01 26 026 180000 262.8330 -18.3032 A 31.9
2002 01 26 026 190000 262.6011 -18.3369 A 32.0
2002 01 26 026 200000 262.3724 -18.3691 A 32.0
January 27
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 27 027 130000 258.9239 -18.9169 A 33.1 26
2002 01 27 027 140000 258.7103 -18.9499 A 33.1
2002 01 27 027 150000 258.4946 -18.9816 A 33.2
2002 01 27 027 160000 258.2780 -19.0117 A 0.0020 -0.0003 33.2
2002 01 27 027 170000 258.0615 -19.0402 A 33.3
2002 01 27 027 180000 257.8463 -19.0669 A 33.4
2002 01 27 027 190000 257.6337 -19.0921 A 33.4
January 29
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2002 01 29 029 130000 250.0728 -20.0016 A 36.5 26
2002 01 29 029 140000 249.8946 -20.0208 A 36.5
2002 01 29 029 150000 249.7151 -20.0387 A 36.6
2002 01 29 029 160000 249.5356 -20.0551 A 0.0019 -0.0001 36.7
2002 01 29 029 170000 249.3570 -20.0699 A 36.8
2002 01 29 029 180000 249.1804 -20.0833 A 36.9
2002 01 29 029 190000 249.0067 -20.0955 A 37.0
PRDX (DELAY-DOPPLER EPHEMERIDES)
PRDX.OUT.s38
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2002 JAN 29 13:10 36.4854519761 -173854.811 319.1753 -20.0048 250.043 22.403
2002 JAN 29 13:20 36.4976662712 -174664.016 321.7118 -20.0080 250.014 23.745
2002 JAN 29 13:30 36.5099381633 -175498.073 324.2483 -20.0112 249.984 25.026
2002 JAN 29 13:40 36.5222693525 -176355.556 326.7849 -20.0144 249.954 26.243
2002 JAN 29 13:50 36.5346614220 -177234.992 329.3215 -20.0176 249.924 27.391
2002 JAN 29 14:00 36.5471158576 -178134.866 331.8582 -20.0207 249.895 28.468
2002 JAN 29 14:10 36.5596340379 -179053.621 334.3949 -20.0238 249.865 29.468
2002 JAN 29 14:20 36.5722172384 -179989.664 336.9316 -20.0268 249.835 30.389
2002 JAN 29 14:30 36.5848665987 -180941.366 339.4684 -20.0298 249.805 31.226
2002 JAN 29 14:40 36.5975831739 -181907.068 342.0051 -20.0328 249.775 31.975
2002 JAN 29 14:50 36.6103678789 -182885.083 344.5419 -20.0357 249.745 32.634
2002 JAN 29 15:00 36.6232215167 -183873.699 347.0787 -20.0386 249.715 33.198
2002 JAN 29 15:10 36.6361447780 -184871.185 349.6155 -20.0414 249.685 33.665
2002 JAN 29 15:20 36.6491382074 -185875.791 352.1523 -20.0442 249.655 34.033
2002 JAN 29 15:30 36.6622022579 -186885.751 354.6891 -20.0469 249.625 34.299
2002 JAN 29 15:40 36.6753372273 -187899.291 357.2258 -20.0497 249.595 34.462
2002 JAN 29 15:50 36.6885433194 -188914.629 359.7626 -20.0523 249.565 34.521
2002 JAN 29 16:00 36.7018205901 -189929.979 2.2993 -20.0549 249.536 34.476
2002 JAN 29 16:10 36.7151689776 -190943.556 4.8360 -20.0575 249.506 34.327
2002 JAN 29 16:20 36.7285882949 -191953.575 7.3727 -20.0601 249.476 34.075
2002 JAN 29 16:30 36.7420782305 -192958.263 9.9093 -20.0626 249.446 33.721
2002 JAN 29 16:40 36.7556383565 -193955.853 12.4459 -20.0650 249.416 33.268
2002 JAN 29 16:50 36.7692680982 -194944.595 14.9825 -20.0674 249.387 32.716
2002 JAN 29 17:00 36.7829667901 -195922.754 17.5190 -20.0698 249.357 32.071
2002 JAN 29 17:10 36.7967336225 -196888.618 20.0554 -20.0721 249.327 31.334
2002 JAN 29 17:20 36.8105676739 -197840.497 22.5918 -20.0744 249.298 30.509
2002 JAN 29 17:30 36.8244679057 -198776.730 25.1281 -20.0767 249.268 29.600
2002 JAN 29 17:40 36.8384331638 -199695.686 27.6644 -20.0789 249.239 28.610
2002 JAN 29 17:50 36.8524621886 -200595.769 30.2006 -20.0811 249.210 27.544
2002 JAN 29 18:00 36.8665535945 -201475.419 32.7367 -20.0832 249.180 26.405
2002 JAN 29 18:10 36.8807058956 -202333.117 35.2727 -20.0853 249.151 25.198
2002 JAN 29 18:20 36.8949175010 -203167.386 37.8086 -20.0874 249.122 23.926
2002 JAN 29 18:30 36.9091867180 -203976.796 40.3445 -20.0894 249.093 22.592
Arecibo TX windows' phase coverage
Rotation Phase
0 90 180 270 360
Jan | | | | |
9 ..........................######..... 9
10 ...........######.................... 10
11 ###..............................#### 11
12 ..................######............. 12
13 ...######............................ 13
ARECIBO MASTERLOG OSOD AST UTC
-----------------------------------------------------------------------
Dec 18 RI cw 5 kHz 3 runs 18 172611-173249 212611-213249
CBR 1023x4 1 run 18 173853-174035 213853-214035
CBR 8191x4 1 run 18 174252-174434 214252-214434
-----------------------------------------------------------------------
Dec 20 CBR 16383x0.5 7 runs 18 224149-230237
Dec 20 CBR 7-run sum
-----------------------------------------------------------------------
Jan 09 RI 8191x4 1 run 24 144604-144647 184604-184647
RI 1023x4 2 runs 24 144604-144946 184604-184946
RI cw 5 kHz 15 runs 24 145245-152207 185245-192207
Jan 9 cw 11-run sum
RI cw 5 kHz 15 runs 26 152442-152616 192442-192616
CBR 65535x0.1 37 runs 26 152749-163531 192749-203531
-----------------------------------------------------------------------
Jan 10 RI cw 5 kHz 5 runs 26 145024-145600 185024-185600
Jan 10 cw 5-run sum
CBR 65535x0.1 51 runs 26 145904-162126 185904-202126
Jan 10 four-look sums
-----------------------------------------------------------------------
Jan 11 RI cw 5 kHz 5 runs 26 142732-143419 182732-183419
Jan 11 cw 5-run sum
CBR 65535x0.1 58 runs 26 143616-160419 183616-200419
-----------------------------------------------------------------------
Jan 12 RI cw 5 kHz 5 runs 30 142129-142758 182129-182758
Jan 12 cw 5-run sum
RI cw 5 kHz 10 runs 30 143544-144805 183544-184805
CBR 65535x0.1 37 runs 30 144957-154450 184957-194450
-----------------------------------------------------------------------
Jan 13 RI cw 5 kHz 5 runs 30 141143-141754 181143-181754
Jan 13 cw 5-run sum
CBR 65535x0.1 16 runs 30 141951-144126 181951-184126
-----------------------------------------------------------------------
GOLDSTONE MASTERLOG
RCV
file setup runs start -stop osod OFFSET TX Poln
---------------------------------------------------------------------------------------------------
January 15 (DOY 015)
--------------------
PSD02015RCP.4660_Nereus, VOLT02015RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 173321-174504 30 none RCP
PSD02015LCP.4660_Nereus, VOLT02015LCP.4660_Nereus
CW 2 kHz 4096 FFT 10 174711-175855 30 none LCP
ne01503 10 us x 6.15 Hz 127 code 5 181717-181955 30 +30 RCP
ne01506 1 us x 3.0 Hz 127 code 3 183207-183513 30 +30 RCP 465 kW
ne01509 1/8 us x 1/4 Hz 127 code 12 190228-191753 30 +8 RCP 452 kW
ne01510 1/8 us x 1/4 Hz 127 code 16 193214-195257 32 +8 RCP also sampling w/PFS
ne01511 1/8 us x 1/4 Hz 127 code 7 195843-200722 32 +8 RCP sample w/vax only
ne01512 1/8 us x 1/4 Hz 127 code 4 203842-204319 32 +8 RCP NO ECHOES
PFS 1/8 us x 1/4 Hz 127 code 14 213634-214518 30/32 +8 RCP PO soln 32; PFS soln 30
PFS 1/8 us x 1/4 Hz 127 code 15 214707-220502 30 +8 RCP PO soln 30; PFS soln 30
Jan. 15 Goldstone images
January 18 (DOY 018)
--------------------
PSD02018.4660_Nereus, VOLT02018.4660_Nereus
CW 2 kHz 4096 FFT 10 165836-170845 32 none RCP same file,15 s dwell
CW 2 kHz 4096 FFT 10 171301-172310 32 none RCP same file,10 s dwell
CW 2 kHz 4096 FFT 10 172831-173841 32 none LCP same file,10 s dwell
PFS 1/8 us 127 code 49 183025-192217 32 +8 RCP
ne01803 1 us x 3.0 Hz 127 code 4 193006-193357 32 +30 RCP
ne01806 1/8 us x 1/4 Hz 127 code 58 194953-205440 32 +8 RCP
ne01807 1/8 us x 1/4 Hz 127 code 54 211746-221803 32 +8 RCP
ne01808 1/8 us x 1/4 Hz 127 code 54 222329-232336 32 +8 RCP
ne01809 1/8 us x 1/4 Hz 127 code 35 232444-000519 32 +8 RCP
Jan. 18 Goldstone images
January 19 (DOY 019)
--------------------
ne01903 1 us x 3.0 Hz 127 code 4 170248-170629 34 +30 RCP
ne01906 1/8 us x 1/8 Hz 127 code 53 172257-182213 34 +8 RCP
ne01907 1/8 us x 1/8 Hz 127 code 53 183239-193510 34 +8 RCP
ne01908 1/8 us x 1/8 Hz 127 code 53 193937-203847 34 +8 RCP
ne01909 1/8 us x 1/8 Hz 127 code 37 204933-213046 34 +8 RCP
ne01910 1/8 us x 1/8 Hz 127 code 23 213614-220126 34 +8 RCP
ne01911 1/8 us x 1/8 Hz 127 code 44 221207-230019 34 +8 RCP
PSD02019RCP.4660_Nereus, VOLT02019RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 230840-231932 34 none RCP
PSD02019RCP.4660_Nereus, VOLT02019RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 232344-233330 34 none LCP
Jan. 19 Goldstone images
January 20 (DOY 020)
--------------------
PSD02020RCP.4660_Nereus, VOLT02020RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 170554-171544 36 none RCP
PSD02020LCP.4660_Nereus, VOLT02020LCP.4660_Nereus
CW 2 kHz 4096 FFT 10 171819-172809 36 none LCP
ne02003 1 us x 3.0 Hz 127 code 5 174647-175136 36 +30 RCP
ne02006 1/8 us x 1/8 Hz 127 code 52 185417-195234 36 +8 RCP
ne02007 1/8 us x 1/8 Hz 127 code 50 200137-205722 36 +8 RCP
ne02008 1/8 us x 1/8 Hz 127 code 50 211421-221014 36 +8 RCP
ne02009 1/8 us x 1/8 Hz 127 code 42 221236-225949 36 +8 RCP
Jan. 20 Goldstone images
January 22 (DOY 022)
--------------------
PSD02022RCP.4660_Nereus, VOLT02022RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 165724-170655 36 none RCP
PSD02022LCP.4660_Nereus, VOLT02022LCP.4660_Nereus
CW 2 kHz 4096 FFT 10 170805-171736 36 none LCP
PFS 1/8 us, 127 code 68 185639-200422 36 +8 RCP
January 23 (DOY 023)
--------------------
PSD02023RCP.4660_Nereus, VOLT02023RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 150544-151515 36 none RCP
PSD02023LCP.4660_Nereus, VOLT02023LCP.4660_Nereus
CW 2 kHz 4096 FFT 10 151648-152618 36 none RCP
ne02303 1 us x 3.0 Hz 127 code 5 153745-154225 36 +30 RCP
ne02304 1/8 us x 1/8 Hz 127 code 50 154532-163719 36 +8 RCP
ne02305 1/8 us x 1/8 Hz 127 code 50 164050-173327 36 +8 RCP
ne02306a 1/8 us x 1/8 Hz 127 code 18 174108-175937 36 +8 RCP
ne02309 1/8 us x 1/8 Hz 127 code 50 182901-192124 36 +8 RCP
ne02310 1/8 us x 1/8 Hz 127 code 24 192534-195008 36 +8 RCP
Jan. 23 Goldstone images
January 24 (DOY 024)
--------------------
PSD02024.4660_Nereus, VOLT02024.4660_Nereus
CW 2 kHz 4096 FFT 5 144542-145019 38 none RCP
ne02403 1/8 us x 1/8 Hz 127 code 50 150626-160243 38 +8 RCP
ne02404 1/8 us x 1/8 Hz 127 code 50 160625-170203 38 +8 RCP
ne02405 1/8 us x 1/8 Hz 127 code 16 171212-172945 38 +8 RCP
Jan. 24 Goldstone images
January 25 (DOY 025)
--------------------
PSD02025.4660_Nereus, VOLT02025.4660_Nereus
CW 2 kHz 4096 FFT 5 162119-162607 38 none RCP
ne02503 1/8 us x 1/8 Hz 127 code 50 163712-173455 38 +8 RCP
ne02504 1/8 us x 1/8 Hz 127 code 52 174320-184509 38 +8 RCP
ne02505 1/8 us x 1/8 Hz 127 code 7 184754-185520 38 +8 RCP
Jan. 25 Goldstone images
January 26 (DOY 026)
--------------------
PSD02026.4660_Nereus, VOLT02026.4660_Nereus
CW 2 kHz 4096 FFT 5 140539-141034 38 none RCP
ne02603 1/8 us x 1/8 Hz 127 code 6 142109-142738 38 +8 RCP
ne02603 1/8 us x 1/8 Hz 127 code 52 143514-153339 38 +8 RCP
ne02604 1/8 us x 1/8 Hz 127 code 50 153744-163703 38 +8 RCP
ne02605 1/8 us x 1/8 Hz 127 code 16 163929-165752 38 +8 RCP
ne02606 1/8 us x 1/8 Hz 127 code 28 172508-175804 38 +8 RCP
ne02607 1/8 us x 1/8 Hz 127 code 54 180945-191426 38 +8 RCP
Jan. 26 Goldstone images
January 27 (DOY 027)
--------------------
PSD02027.4660_Nereus, VOLT02027.4660_Nereus
CW 2 kHz 4096 FFT 5 134544-135048 38 none RCP
ne02704 1/8 us x 1/8 Hz 127 code 50 141301-151423 38 +8 RCP
ne02705 1/8 us x 1/8 Hz 127 code 50 152536-162703 38 +8 RCP
ne02706 1/8 us x 1/8 Hz 127 code 4 162929-163343 38 +8 RCP
ne02707 1/8 us x 1/8 Hz 127 code 50 164433-174604 38 +8 RCP
ne02708 1/8 us x 1/8 Hz 127 code 11 175445-180742 38 +8 RCP
ne02709 1/8 us x 1/8 Hz 127 code 42 181750-190929 38 +8 RCP
Jan. 27 Goldstone images
January 29 (DOY 029)
--------------------
PSD02029RCP.4660_Nereus, VOLT02029RCP.4660_Nereus
CW 2 kHz 4096 FFT 10 140638-141844 38 none RCP
PSD02029LCP.4660_Nereus, VOLT02029LCP.4660_Nereus
CW 2 kHz 4096 FFT 10 142039-143245 38 none RCP
ne02903 1 us x 3.0 Hz 127 code 10 145946-151224 38 +30 RCP
ne02906 1/8 us x 1/8 Hz 127 code 4 152151-152628 38 +8 RCP
ne02907 1/8 us x 1/8 Hz 127 code 50 153000-163718 38 +8 Hz,+30 gates RCP
ne02908 1/8 us x 1/8 Hz 127 code 46 163956-174622 38 +8 Hz,+30 gates RCP
ne02909 1/8 us x 1/8 Hz 127 code 20 175830-182922 38 +8 Hz,+30 gates RCP
Jan. 29 Goldstone images
Dr. Steven J. Ostro | PHONE: (818) 354-3173
300-233 | FAX: (818) 354-9476
Jet Propulsion Laboratory | email: ostro@echo.jpl.nasa.gov
Pasadena, CA 91109-8099
Asteroid Radar Astronomy