(162421) 2000 ET70 Goldstone Radar Observations Planning
(162421) 2000 ET70 was discovered by Lincoln Laboratory ETS (LINEAR) in New Mexico on March 8, 2000. Little is known about this Aten-class Potentially Hazardous Asteroid except that its absolute magnitude of 18.1, which suggests a diameter of ~750 m (within a factor of two). Whiteley (2001) classified 2000 ET70 as an X-type object, which is an ambiguous group that includes objects that are large and dark, metallic, and small and bright. Thus, the composition of this object is effectively unknown. 2000 ET70 will approach within 0.045 AU (17.7 lunar distances) on February 19, 2012. This asteroid will be a strong radar target at Goldstone and a very strong imaging target at Arecibo. We hope to obtain delay-Doppler images with resolutions at least as fine as 0.25 microseconds. 2000 ET70 will brighten to 13th magnitude in the second half of February when it will be an excellent target for photometry, spectroscopy, and infrared radiometry. Update on 2012 Feb 13: Arecibo radar imaging by Shantanu Naidu and Jean-Luc Margot suggests that 2000 ET70 is roughly 1.5 km in diameter and that it has a period of about 9 hours. Consequently, we have revised the estimated SNRs in the table below. This will be a significantly better imaging target than we originally anticipated. Shantanu posted an Arecibo radar image at: http://www2.ess.ucla/~spn/2000ET70.html
Orbital and Physical Characteristics orbit type Aten semimajor axis 0.947 AU eccentricity 0.124 inclination 22.3 deg perihelion distance 0.830 AU aphelion distance 1.064 AU absolute magnitude (H) 18.1 diameter ~0.75 km (+-a factor of two) (updated: roughly 1.5 km) rotation period unknown, but apparently about 9 h pole direction unknown lightcurve amplitude unknown spectral class X (Whiteley, 2001) Last update: 2012 February 18
M.P.E.C. 2000-E54 Issued 2000 Mar. 13, 18:56 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
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2000 ET70
Observations:
K00E70T* C2000 03 08.12035 06 02 57.73 -02 15 12.8 17.0 704
K00E70T C2000 03 08.13401 06 02 59.79 -02 16 27.9 17.0 704
K00E70T C2000 03 08.14748 06 03 01.85 -02 17 41.7 16.7 704
K00E70T C2000 03 08.16108 06 03 03.89 -02 18 56.5 16.7 704
K00E70T C2000 03 08.17496 06 03 05.98 -02 20 11.9 17.1 704
K00E70T C2000 03 09.08404 06 05 38.55 -03 40 22.6 16.1 V 713
K00E70T C2000 03 09.11875 06 05 43.60 -03 43 20.2 16.4 V 713
K00E70T C2000 03 09.14132 06 05 46.86 -03 45 15.3 16.3 V 713
K00E70T C2000 03 09.15278 06 05 48.52 -03 46 13.9 16.1 V 713
K00E70T C2000 03 09.16429 06 05 50.19 -03 47 06.9 16.1 704
K00E70T C2000 03 09.17719 06 05 52.06 -03 48 12.3 16.1 704
K00E70T C2000 03 09.19007 06 05 53.94 -03 49 17.3 16.4 704
K00E70T C2000 03 09.20298 06 05 55.84 -03 50 22.9 16.7 704
K00E70T C2000 03 09.21594 06 05 57.76 -03 51 28.3 16.6 704
K00E70T C2000 03 09.85803 06 07 40.56 -04 44 38.2 587
K00E70T C2000 03 09.86373 06 07 41.46 -04 45 03.4 587
K00E70T C2000 03 09.86608 06 07 41.79 -04 45 13.6 620
K00E70T C2000 03 09.86898 06 07 42.23 -04 45 27.6 17.0 V 620
K00E70T C2000 03 09.87120 06 07 42.57 -04 45 38.4 620
K00E70T C2000 03 09.87337 06 07 42.90 -04 45 48.9 17.2 V 620
K00E70T C2000 03 10.05179 06 08 12.07 -05 00 00.1 747
K00E70T C2000 03 10.05336 06 08 12.29 -05 00 07.7 747
K00E70T C2000 03 10.05493 06 08 12.50 -05 00 15.1 747
K00E70T C2000 03 10.05654 06 08 12.72 -05 00 22.8 747
K00E70T C2000 03 10.05818 06 08 12.94 -05 00 30.5 747
K00E70T C2000 03 10.75427 06 09 59.53 -05 54 47.1 557
K00E70T C2000 03 10.75544 06 09 59.72 -05 54 53.1 557
K00E70T C2000 03 10.75662 06 09 59.81 -05 54 57.3 557
K00E70T C2000 03 10.75779 06 10 00.02 -05 55 02.9 557
K00E70T C2000 03 10.80341 06 10 06.15 -05 58 28.5 16.3 R 118
K00E70T C2000 03 10.80484 06 10 06.34 -05 58 35.1 118
K00E70T C2000 03 10.80747 06 10 06.68 -05 58 46.8 118
K00E70T C2000 03 10.82284 06 10 08.71 -05 59 56.1 16.4 461
K00E70T C2000 03 10.82382 06 10 08.84 -06 00 00.2 461
K00E70T C2000 03 10.82532 06 10 09.05 -06 00 07.0 461
K00E70T C2000 03 11.11759 06 10 53.33 -06 21 49.1 16.5 R 858
K00E70T C2000 03 11.11958 06 10 53.58 -06 21 58.0 16.6 R 858
K00E70T C2000 03 11.12271 06 10 54.01 -06 22 12.1 16.7 R 858
K00E70T C2000 03 11.16100 06 10 59.58 -06 25 00.3 670
K00E70T C2000 03 11.18029 06 11 02.12 -06 26 25.6 670
K00E70T C2000 03 11.19757 06 11 04.35 -06 27 42.0 670
K00E70T C2000 03 11.78402 06 12 30.87 -07 10 06.4 16.1 R 046
K00E70T C2000 03 11.78572 06 12 31.05 -07 10 13.8 046
K00E70T C2000 03 11.78679 06 12 31.22 -07 10 18.1 046
K00E70T C2000 03 11.78763 06 12 31.33 -07 10 21.1 046
K00E70T C2000 03 11.78918 06 12 31.54 -07 10 28.4 046
K00E70T C2000 03 11.79166 06 12 31.87 -07 10 38.9 046
K00E70T C2000 03 12.08807 06 13 14.32 -07 31 16.3 16.5 V 649
K00E70T C2000 03 12.08896 06 13 14.37 -07 31 23.0 16.8 R 750
K00E70T C2000 03 12.09155 06 13 14.79 -07 31 30.4 17.5 V 649
K00E70T C2000 03 12.09304 06 13 14.96 -07 31 36.6 17.5 V 649
K00E70T C2000 03 12.09614 06 13 15.28 -07 31 53.0 16.7 R 750
K00E70T C2000 03 12.10433 06 13 16.88 -07 32 21.8 16.1 R 858
K00E70T C2000 03 12.10451 06 13 16.41 -07 32 24.3 17.5 V 649
K00E70T C2000 03 12.10617 06 13 16.67 -07 32 31.2 17.4 V 734
K00E70T C2000 03 12.10684 06 13 16.69 -07 32 33.8 17.5 V 649
K00E70T C2000 03 12.10720 06 13 17.25 -07 32 33.3 16.1 R 858
K00E70T C2000 03 12.11196 06 13 17.41 -07 32 55.5 17.3 V 734
K00E70T C2000 03 12.11250 06 13 17.94 -07 32 55.5 16.3 R 858
K00E70T C2000 03 12.11491 06 13 17.78 -07 33 07.4 17.3 V 734
K00E70T C2000 03 12.11637 06 13 17.90 -07 33 16.9 16.6 R 750
K00E70T C2000 03 12.20040 06 13 29.07 -07 38 56.3 17.1 704
K00E70T C2000 03 12.20054 06 13 29.10 -07 38 56.4 17.0 704
K00E70T C2000 03 12.21364 06 13 30.86 -07 39 51.3 17.9 704
K00E70T C2000 03 12.21377 06 13 30.85 -07 39 50.6 17.8 704
K00E70T C2000 03 12.22692 06 13 32.52 -07 40 44.6 17.6 704
K00E70T C2000 03 12.24131 06 13 34.40 -07 41 42.8 18.1 704
K00E70T C2000 03 12.24145 06 13 34.44 -07 41 44.3 17.3 704
K00E70T C2000 03 12.25444 06 13 36.12 -07 42 37.5 18.2 704
K00E70T C2000 03 12.25457 06 13 36.20 -07 42 37.1 17.4 704
K00E70T C2000 03 12.41930 06 14 01.65 -07 53 53.5 16.6 V 900
K00E70T C2000 03 12.42955 06 14 02.90 -07 54 35.2 900
K00E70T C2000 03 12.75926 06 14 49.27 -08 16 44.1 16.7 V 104
K00E70T C2000 03 12.76146 06 14 49.57 -08 16 52.6 104
K00E70T C2000 03 12.76481 06 14 49.98 -08 17 06.0 104
K00E70T C2000 03 12.81042 06 14 55.73 -08 20 07.4 17.4 R 151
K00E70T C2000 03 12.81380 06 14 56.10 -08 20 21.7 17.0 R 151
K00E70T C2000 03 12.81667 06 14 56.64 -08 20 33.5 16.8 R 151
K00E70T C2000 03 12.81823 06 14 56.71 -08 20 38.2 16.8 R 151
K00E70T C2000 03 12.82419 06 14 57.51 -08 21 03.3 17.4 R 151
K00E70T C2000 03 12.82628 06 14 57.78 -08 21 11.2 17.0 R 151
K00E70T FC2000 03 12.85954 06 15 01.75 -08 23 21.1 595
K00E70T FC2000 03 12.86221 06 15 02.13 -08 23 32.3 595
K00E70T FC2000 03 12.86500 06 15 02.51 -08 23 42.8 595
K00E70T C2000 03 12.87056 06 15 03.20 -08 24 04.3 17.2 V 595
Observer details:
046 Klet. Observers J. Ticha, M. Tichy. 0.57-m f/5.2 reflector + CCD.
104 San Marcello Pistoiese. Observers L. Tesi, A. Boattini, M. Tombelli.
Measurers G. Forti, L. Tesi, A. Boattini, M. Tombelli. 0.40-m f/5
reflector + CCD.
118 Modra. Observers L. Kornos, P. Koleny. 0.6-m f/5.5 reflector + CCD.
151 Eschenberg Observatory, Winterthur. Observer M. Griesser. 0.25-m f/8.0
reflector + CCD.
461 JATE Asteroid Survey, Piszkesteto Stn. (Konkoly). Observers K. Sarneczky,
L. Kiss, K. Sziladi. 0.60-m Schmidt + CCD.
557 Ondrejov. Observers L. Sarounova, P. Kusnirak. 0.65-m f/3.6 reflector
+ CCD.
587 Sormano. Observers P. Sicoli, P. Chiavenna. 0.5-m reflector + CCD.
595 Farra d'Isonzo. Observers G. Lombardi, E. Pettarin. 0.40-m f/4.5
reflector + CCD.
620 Observatorio Astronomico de Mallorca. Observers A. Lopez, R. Pacheco.
0.30-m f/3.3 Schmidt-Cassegrain + CCD.
649 Powell Observatory, Louisburg. Observers D. Young, J. Alburty. Measurers
M. Kirk, R. Fredrick. 0.30-m Schmidt-Cassegrain + CCD.
670 Camarillo. Observer J. E. Rogers. 0.30-m f/6.7 Helin Telescope + CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, M. Elowitz, R. Huber. Measurers J. Stuart, H. Viggh,
R. Sayer, J. B. Evans. 1.0-m f/2.15 reflector + CCD.
713 Thornton. Observer R. A. Koff. 0.20-m f/10 Schmidt-Cassegrain + CCD.
734 Farpoint Observatory. Observers G. Hug, G. E. Bell. 0.30-m
Schmidt-Cassegrain + CCD.
747 Baton Rouge Observatory. Observer W. R. Cooney, Jr. 0.51-m f/8.4
reflector + CCD.
750 Hobbs Observatory, Fall Creek. Observer R. Elliott. 0.3-m f/3.3 reflector
+ CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.3-m f/3.3
Schmidt-Cassegrain + CCD.
900 Moriyama. Observer Y. Ikari. 0.25-m f/6.3 reflector + CCD.
Orbital elements:
2000 ET70 PHA 0.019D
Epoch 2000 Feb. 26.0 TT = JDT 2451600.5 Williams
M 122.44889 (2000.0) P Q
n 1.06974132 Peri. 46.36885 +0.92711510 -0.32732472
a 0.9468551 Node 331.23945 +0.12481033 +0.72888879
e 0.1233546 Incl. 22.29378 +0.35338361 +0.60131494
P 0.92 H 18.2 G 0.15
From 85 observations 2000 Mar. 8-12.
Ephemeris:
2000 ET70 a,e,i = 0.95, 0.12, 22 q = 0.8301
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2000 03 07 05 59.70 -00 27.8 0.148 1.033 102.0 69.9 16.6
2000 03 12 06 13.04 -07 24.5 0.176 1.040 100.3 70.1 17.0
2000 03 17 06 23.95 -12 21.8 0.206 1.046 98.5 70.3 17.3
.
.
.
2000 07 30 10 48.60 -38 38.2 0.333 0.924 64.8 96.2 19.1
2000 08 04 11 06.26 -37 07.6 0.306 0.913 62.2 100.5 19.1
Gareth V. Williams (C) Copyright 2000 MPC M.P.E.C. 2000-E54
Target Name: 2000 ET70
D = 1.5 km Based on Arecibo images from 2012 Feb. 12
Period = 9 h Based on Arecibo images from 2012 Feb. 12
OC albedo = 0.10 A standard guess.
UT # max
start date window RA, dec dist runs SNR SNR/run
---------------------------------------------------------------------
2012 Feb 10 08:06-19:01 227, +25 0.076 253 300 21
2012 Feb 11 07:58-18:41 224, +23 0.071 266 400 26
2012 Feb 12 07:50-18:19 222, +21 0.066 279 520 34
2012 Feb 13 07:42-17:55 219, +18 0.062 292 690 43
2012 Feb 14 07:34-17:28 215, +14 0.058 303 900 55
2012 Feb 15 07:26-16:58 212, +10 0.054 312 1100 70
2012 Feb 16 07:19-16:23 207, +5 0.051 315 1400 87
2012 Feb 17 07:12-15:45 203, 0 0.048 312 1700 100
2012 Feb 18 07:07-15:01 198, -6 0.046 300 1800 120
2012 Feb 19 07:03-14:13 192, -12 0.045 277 1800 120
2012 Feb 20 07:02-13:19 186, -18 0.046 243 1600 110
2012 Feb 21 07:05-12:20 180, -23 0.047 198 1300 96
2012 Feb 22 07:15-11:13 174, -28 0.048 144 880 76
2012 Feb 23 07:39-09:52 168, -33 0.051 76 490 57
After Feb. 23 2000 ET70 moves too far south for Goldstone to track.
Here are the original SNRs we estimated before the Arecibo observations on Feb. 12:
2012 Feb 10 08:06-19:01 227, +25 0.077 273 45 3
2012 Feb 11 07:58-18:41 224, +23 0.071 287 59 4
2012 Feb 12 07:50-18:19 222, +21 0.066 301 78 5
2012 Feb 13 07:42-17:55 219, +18 0.062 315 100 6
2012 Feb 14 07:34-17:28 215, +14 0.058 328 130 8
2012 Feb 15 07:26-16:58 212, +10 0.054 338 170 10
2012 Feb 16 07:19-16:23 207, +5 0.051 344 210 13
2012 Feb 17 07:12-15:45 203, 0 0.048 343 250 15
2012 Feb 18 07:07-15:01 198, -6 0.046 333 280 17
2012 Feb 19 07:03-14:13 192, -12 0.045 313 280 18
2012 Feb 20 07:02-13:19 186, -18 0.046 282 250 17
2012 Feb 21 07:05-12:20 180, -23 0.047 243 200 14
2012 Feb 22 07:15-11:13 174, -28 0.048 198 150 11
2012 Feb 23 07:39-09:52 168, -33 0.051 151 99 9
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
--- ---- --------- --------- --------- --------- -------
046 Feb 15 0850-1225 0050-0425 Feb 15 03:35 54 70
047 Feb 16 0905-1530 0105-0730 Feb 16 06:25 51 87
048 Feb 17 0705-1225 2305-0425 Feb 16/17 05:20 48 100
049 Feb 18 0705-0845 2305-0145 Feb 17/18 01:40 46 120
050 Feb 19 0705-1310 2305-0510 Feb 18/19 06:05 45 120
051 Feb 20 0710-1220 2310-0420 Feb 19/20 05:10 46 110
053 Feb 22 0915-1155 0115-0355 Feb 22 02:40 48 76 added
054 Feb 23 0820-1055 0020-0255 Feb 23 02:35 51 57 added
TXON is listed at the earliest time that we can transmit.
Scheduled Arecibo tracks:
(using P = 9 h and D = 1.5 km)
UT UT AST PST Duration Round-trip
DOY Date TX Window TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- ---------- ---------
043 Feb 12 0826-1110 0426-0710 Feb 12 0026-0310 Feb 12 02:44 67 750
044 Feb 13 0810-1054 0410-0654 Feb 13 0010-0254 Feb 13 02:44 62 960
045 Feb 14 0755-1034 0355-0634 Feb 14 2355-0234 Feb 13/14 02:39 58 1200
046 Feb 15 0742-1010 0342-0610 Feb 15 2342-0210 Feb 14/15 02:38 54 1600
047 Feb 16 0734-0937 0334-0537 Feb 16 2334-0137 Feb 15/16 02:03 51 1900
048 Feb 17 0738-0849 0338-0449 Feb 17 2338-0049 Feb 16/17 01:11 46 1900
From Jon Giorgini, 2012 Feb 16:
Arecibo added a new delay from the 13th and incremented to s51.
Here is the delta s51-s49:
RECEIVER U.T. RT-RANGE DOPPLER LHA DEC RA EL D-DOP
s51: 2012 FEB 17 07:00 48.4604573815 252881.771 291.0913 1.0624 203.695 17.694 252881.771
s49: 2012 FEB 17 07:00 48.4604518536 252882.166 291.0913 1.0624 203.695 17.694 252882.166
Being internal to the existing data arc, the new measurement makes
a +5.5 usec and -0.395 Hz difference tonight. I've synchronized and
updated GSSR data files accordingly.
Here are s51 3-sigma S/X-band uncertainties:
Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2012-Feb-17 00:00 1.760 0.48 1.74 0.000023
2012-Feb-18 00:00 1.893 0.68 2.46 0.000045
2012-Feb-19 00:00 1.995 0.85 3.10 0.000073
2012-Feb-20 00:00 2.050 0.98 3.58 0.000108
2012-Feb-21 00:00 2.049 1.05 3.83 0.000146
- - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini, 2012 Feb. 15:
Synchronizing Arecibo/GSSR astrometric datasets and merging in
new optical -- from January, but just reported last night -- new
orbit solution s49 was produced for 162421 (2000 ET70).
Predicts have been updated to s49 at both sites.
With 189 optical measurements (1977-Feb-18 to 2012-Feb-1), 4 delay
and 1 Doppler (3 delays from AO, 1 delay from GSSR, 1 Doppler from AO)
formal 3-sigma S/X-band uncertainties are:
arcsec Hz Hz seconds
Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2012-Feb-13 00:00 1.164 0.14 0.50 0.000005
2012-Feb-14 00:00 1.277 0.07 0.26 0.000005
2012-Feb-15 00:00 1.402 0.13 0.46 0.000004
2012-Feb-16 00:00 1.536 0.27 0.97 0.000008
2012-Feb-17 00:00 1.671 0.43 1.58 0.000020
2012-Feb-18 00:00 1.793 0.61 2.22 0.000039
2012-Feb-19 00:00 1.886 0.77 2.80 0.000064
2012-Feb-20 00:00 1.936 0.89 3.24 0.000095
2012-Feb-21 00:00 1.934 0.95 3.47 0.000128
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini, 2012 Feb. 14:
Here are formal 3-sigma X-band uncertainties for tonight's Arecibo
augmented orbit solution #43:
Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig
2012-Feb-14 00:00 2.678 4.76 0.000075
2012-Feb-15 00:00 2.894 5.07 0.000124
2012-Feb-16 00:00 3.110 5.50 0.000174
2012-Feb-17 00:00 3.309 6.05 0.000228
2012-Feb-18 00:00 3.467 6.65 0.000284
2012-Feb-19 00:00 3.560 7.19 0.000343
2012-Feb-20 00:00 3.573 7.56 0.000402
2012-Feb-21 00:00 3.504 7.71 0.000461
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini, 2012 Feb. 9:
With 186 optical measurements (1977-Feb-18 to 2012-Feb-1),
162421 (2000 ET70) orbit solution #41 was estimated.
Formal 3-sigma S-band uncertainties are below:
Date__(UT)__HR:MN POS_3sigma DOP_S_3sig RT_delay_3sig
2012-Feb-12 00:00 2.856 1.45 0.000984
2012-Feb-13 00:00 3.175 1.59 0.000950
2012-Feb-14 00:00 3.545 1.81 0.000910
2012-Feb-15 00:00 3.968 2.13 0.000861
2012-Feb-16 00:00 4.435 2.55 0.000803
2012-Feb-17 00:00 4.919 3.04 0.000734
2012-Feb-18 00:00 5.374 3.56 0.000658
2012-Feb-19 00:00 5.735 4.00 0.000584
NOTE: the Doppler uncertainties are for S-band. Multiply by 3.6 to obtain X-band uncertainties.
- - - - - - - - - - - - - - - - - - - -
From JPL Horizons, Dec 03 2011, Solution #37, #obs 173 (1977-2011)
Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2012-Feb-10 00:00 6.969 2.52 9.15 0.001804
2012-Feb-11 00:00 7.428 2.64 9.59 0.001850
2012-Feb-12 00:00 7.930 2.76 10.03 0.001899
2012-Feb-13 00:00 8.475 2.88 10.47 0.001948
2012-Feb-14 00:00 9.064 2.99 10.87 0.001995
2012-Feb-15 00:00 9.696 3.10 11.26 0.002034
2012-Feb-16 00:00 10.367 3.25 11.80 0.002061
2012-Feb-17 00:00 11.067 3.52 12.80 0.002065
2012-Feb-18 00:00 11.770 4.03 14.63 0.002039
2012-Feb-19 00:00 12.421 4.77 17.32 0.001976
2012-Feb-20 00:00 12.937 5.58 20.29 0.001875
2012-Feb-21 00:00 13.229 6.25 22.71 0.001745
2012-Feb-22 00:00 13.244 6.59 23.95 0.001599
2012-Feb-23 00:00 12.988 6.58 23.92 0.001454
2012-Feb-24 00:00 m 12.519 6.30 22.90 0.001326
2012-Feb-25 00:00 m 11.914 5.86 21.28 0.001224
2012-Feb-26 00:00 m 11.243 5.35 19.43 0.001152
2012-Feb-27 00:00 m 10.559 4.84 17.59 0.001110
2012-Feb-28 00:00 m 9.895 4.37 15.88 0.001094
******************************************************************************************
Apparent Magnitudes and Solar Elongations:
Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta S-O-T /r
2012-Feb-01 00:00 240.67976 36.31770 16.66 0.13099642116259 87.3401 /L
2012-Feb-02 00:00 239.69369 35.67356 16.54 0.12514145019820 88.4023 /L
2012-Feb-03 00:00 238.62694 34.95723 16.41 0.11929301038084 89.5419 /L
2012-Feb-04 00:00 237.46886 34.15689 16.27 0.11346007766153 90.7700 /L
2012-Feb-05 00:00 236.20713 33.25816 16.12 0.10765314511623 92.1002 /L
2012-Feb-06 00:00 234.82751 32.24353 15.97 0.10188462883937 93.5485 /L
2012-Feb-07 00:00 233.31344 31.09154 15.80 0.09616940438067 95.1337 /L
2012-Feb-08 00:00 231.64572 29.77583 15.63 0.09052551938248 96.8786 /L
2012-Feb-09 00:00 229.80204 28.26403 15.44 0.08497514068742 98.8100 /L
2012-Feb-10 00:00 227.75659 26.51642 15.24 0.07954580566013 100.9591 /L
2012-Feb-11 00:00 225.47971 24.48470 15.02 0.07427205217597 103.3616 /L
2012-Feb-12 00:00 222.93770 22.11102 14.80 0.06919748663768 106.0562 /L
2012-Feb-13 00:00 220.09298 19.32812 14.56 0.06437728590338 109.0814 /L
2012-Feb-14 00:00 216.90497 16.06212 14.31 0.05988096032476 112.4679 /L
2012-Feb-15 00:00 213.33192 12.24006 14.06 0.05579483794776 116.2236 /L
2012-Feb-16 00:00 209.33439 7.80546 13.80 0.05222306360570 120.3089 /L
2012-Feb-17 00:00 204.88089 2.74436 13.57 0.04928497932270 124.5994 /L
2012-Feb-18 00:00 199.95587 -2.88091 13.36 0.04710609377918 128.8460 /L
2012-Feb-19 00:00 194.56981 -8.90285 13.20 0.04580083313343 132.6590 /L
2012-Feb-20 00:00 188.76925 -15.04880 13.11 0.04544941686855 135.5686 /L
2012-Feb-21 00:00 182.64321 -20.98796 13.10 0.04607735659671 137.1886 /L
2012-Feb-22 00:00 176.32142 -26.41328 13.16 0.04764837156990 137.4063 /L
2012-Feb-23 00:00 169.96167 -31.11507 13.30 0.05007497981162 136.4288 /L
2012-Feb-24 00:00 163.72806 -35.00915 13.48 0.05324040241275 134.6416 /L
2012-Feb-25 00:00 157.76716 -38.11823 13.69 0.05702082855561 132.4248 /L
2012-Feb-26 00:00 152.19005 -40.53098 13.91 0.06130084135303 130.0584 /T
2012-Feb-27 00:00 147.06495 -42.36306 14.13 0.06598084725469 127.7134 /T
2012-Feb-28 00:00 142.41998 -43.73050 14.34 0.07097874076220 125.4801 /T
Arecibo images on Feb. 12 and 13 suggest that the bandwidth at Goldstone will be about 16 Hz,
so our standard CW setup below should be ideal.
CW setup:
---------------------------------------------------------------------------
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: 2
Dwell 20 seconds
Bandwidth: 4000 Hz
Sampling interval: 2500 x 0.1 usec
VME FFT for PSD files: 4096 for 0.98 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 ranging
baud 1 usec
code 255
ncoh 2
bandwidth 1961 Hz
FFT 128
resolution 15.3 Hz
TXoff +200 Hz (echo in bin 64+13=77)
-------------------------------------------------------------------------------
Tentatively:
0.25-usec imaging
baud 0.25 usec
code 255
FFT 512
ncoh 30
bandwidth 512 Hz
resolution 1 Hz
TXOFF +80 Hz (echo in bin 256+80=336)
---------------------------------
0.125-usec imaging
baud 0.125 usec
code 255
FFT 256
ncoh 60
bandwidth 523 Hz
resolution 2 Hz
TXOFF +50 Hz (echo in bin 128+25=153)
_____________________________________________________________________
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:
/export/apps0/temp_data/data3/osod/ops/a162421/PRDX.OUT.14f-14-14.s59
/PUNCH.OUT.14f-14-14.s59
/EPH.OUT.s59
For chirping:
/export/apps0/temp_data/data3/osod/ops/a162421/PRDX.OUT.14v-14-14.s59
/PUNCH.OUT.14v-14-14.s59
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2012 02 22 053 080000 174.3773 -28.1817 A 48.3 59
2012 02 22 053 090000 174.0995 -28.3836 A 48.4
2012 02 22 053 100000 173.8215 -28.5827 A 3.7 -2.7 48.4
2012 02 22 053 110000 173.5441 -28.7791 A 48.6
2012 02 22 053 120000 173.2683 -28.9728 A 48.7
Feb 23
2012 02 23 054 070000 168.3043 -32.4461 A 50.8 59
2012 02 23 054 080000 168.0310 -32.6165 A 50.9
2012 02 23 054 090000 167.7573 -32.7840 A 3.9 -2.3 51.1
2012 02 23 054 100000 167.4841 -32.9487 A 51.2
2012 02 23 054 110000 167.2123 -33.1104 A 51.3
Macros from February 20
2012 02 20 051 070000 187.2147 -16.9249 A 45.4
2012 02 20 051 080000 186.9523 -17.1780 A 3.30 -3.20 45.4 s57
2012 02 20 051 090000 186.6876 -17.4299 A 45.5
2012 02 20 051 090000 186.6876 -17.4299 B 45.5
2012 02 20 051 100000 186.4214 -17.6803 B 45.5
2012 02 20 051 110000 186.1544 -17.9291 B 3.40 -3.10 45.5 s57
2012 02 20 051 120000 185.8875 -18.1764 B 45.5
2012 02 20 051 130000 185.6217 -18.4221 B 45.6
Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s59
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2012 FEB 22 09:10 48.3672208479 -230644.101 358.2502 -28.4170 174.053 26.136
2012 FEB 22 09:20 48.3834373747 -232067.185 0.8034 -28.4503 174.007 26.119
2012 FEB 22 09:30 48.3997535915 -233488.417 3.3566 -28.4835 173.960 26.012
2012 FEB 22 09:40 48.4161693087 -234906.086 5.9097 -28.5166 173.914 25.815
2012 FEB 22 09:50 48.4326842267 -236318.484 8.4629 -28.5497 173.868 25.528
2012 FEB 22 10:00 48.4492979062 -237723.916 11.0161 -28.5827 173.821 25.154
2012 FEB 22 10:10 48.4660098103 -239120.700 13.5692 -28.6156 173.775 24.693
2012 FEB 22 10:20 48.4828192590 -240507.172 16.1224 -28.6485 173.729 24.147
2012 FEB 22 10:30 48.4997254870 -241881.687 18.6754 -28.6812 173.683 23.519
2012 FEB 22 10:40 48.5167275940 -243242.625 21.2285 -28.7139 173.636 22.810
2012 FEB 22 10:50 48.5338245671 -244588.394 23.7815 -28.7465 173.590 22.024
2012 FEB 22 11:00 48.5510152934 -245917.429 26.3345 -28.7791 173.544 21.163
2012 FEB 22 11:10 48.5682985459 -247228.202 28.8875 -28.8116 173.498 20.231
2012 FEB 22 11:20 48.5856729918 -248519.218 31.4404 -28.8440 173.452 19.229
2012 FEB 22 11:30 48.6031371952 -249789.024 33.9932 -28.8763 173.406 18.161
2012 FEB 22 11:40 48.6206896193 -251036.207 36.5460 -28.9085 173.360 17.029
2012 FEB 22 11:50 48.6383286252 -252259.400 39.0987 -28.9407 173.314 15.838
2012 FEB 22 12:00 48.6560524949 -253457.284 41.6514 -28.9728 173.268 14.589
2012 FEB 23 08:20 50.9812165771 -301015.667 352.8149 -32.6727 167.940 21.569
2012 FEB 23 08:30 51.0023613603 -302315.887 355.3674 -32.7007 167.894 21.735
2012 FEB 23 08:40 51.0235973488 -303617.767 357.9199 -32.7285 167.849 21.818
2012 FEB 23 08:50 51.0449246015 -304919.668 0.4723 -32.7563 167.803 21.816
2012 FEB 23 09:00 51.0663430625 -306219.952 3.0248 -32.7841 167.757 21.731
2012 FEB 23 09:10 51.0878525563 -307516.984 5.5772 -32.8117 167.712 21.563
2012 FEB 23 09:20 51.1094528025 -308809.133 8.1296 -32.8392 167.666 21.311
2012 FEB 23 09:30 51.1311434068 -310094.780 10.6820 -32.8667 167.621 20.978
2012 FEB 23 09:40 51.1529238475 -311372.319 13.2344 -32.8941 167.575 20.564
2012 FEB 23 09:50 51.1747935052 -312640.159 15.7867 -32.9214 167.530 20.071
2012 FEB 23 10:00 51.1967516448 -313896.728 18.3390 -32.9487 167.484 19.500
2012 FEB 23 10:10 51.2187974217 -315140.477 20.8913 -32.9758 167.439 18.854
2012 FEB 23 10:20 51.2409298838 -316369.882 23.4435 -33.0029 167.393 18.134
2012 FEB 23 10:30 51.2631479683 -317583.448 25.9957 -33.0299 167.348 17.344
2012 FEB 23 10:40 51.2854505228 -318779.711 28.5479 -33.0568 167.303 16.484
2012 FEB 23 10:50 51.3078362793 -319957.239 31.0999 -33.0836 167.257 15.558
2012 FEB 23 11:00 51.3303038708 -321114.642 33.6519 -33.1104 167.212 14.568
Soln 57
2012 FEB 20 06:50 45.4283255882 -25065.957 307.9781 -16.8826 187.258 18.149
2012 FEB 20 07:00 45.4301269742 -26338.822 310.5284 -16.9249 187.215 19.745
2012 FEB 20 07:10 45.4320186792 -27642.995 313.0788 -16.9672 187.171 21.295
2012 FEB 20 07:20 45.4340028595 -28977.208 315.6292 -17.0094 187.128 22.796
2012 FEB 20 07:30 45.4360815747 -30340.138 318.1798 -17.0516 187.084 24.243
2012 FEB 20 07:40 45.4382567896 -31730.401 320.7304 -17.0938 187.040 25.633
2012 FEB 20 07:50 45.4405303703 -33146.562 323.2811 -17.1359 186.996 26.962
2012 FEB 20 08:00 45.4429040747 -34587.133 325.8318 -17.1780 186.952 28.226
2012 FEB 20 08:10 45.4453795660 -36050.577 328.3826 -17.2201 186.908 29.420
2012 FEB 20 08:20 45.4479583923 -37535.313 330.9335 -17.2621 186.864 30.541
2012 FEB 20 08:30 45.4506419839 -39039.717 333.4845 -17.3041 186.820 31.583
2012 FEB 20 08:40 45.4534316726 -40562.128 336.0354 -17.3461 186.776 32.543
2012 FEB 20 08:50 45.4563286447 -42100.847 338.5865 -17.3880 186.732 33.417
2012 FEB 20 09:00 45.4593339996 -43654.144 341.1376 -17.4299 186.688 34.199
2012 FEB 20 09:10 45.4624486864 -45220.261 343.6887 -17.4717 186.643 34.887
2012 FEB 20 09:20 45.4656735471 -46797.412 346.2399 -17.5135 186.599 35.476
2012 FEB 20 09:30 45.4690092863 -48383.794 348.7911 -17.5552 186.555 35.963
2012 FEB 20 09:40 45.4724564930 -49977.581 351.3424 -17.5970 186.510 36.345
2012 FEB 20 09:50 45.4760156218 -51576.937 353.8936 -17.6386 186.466 36.620
2012 FEB 20 10:00 45.4796869928 -53180.012 356.4449 -17.6803 186.421 36.787
2012 FEB 20 10:10 45.4834708072 -54784.951 358.9963 -17.7218 186.377 36.844
2012 FEB 20 10:20 45.4873671252 -56389.896 1.5476 -17.7634 186.332 36.790
2012 FEB 20 10:30 45.4913758874 -57992.989 4.0989 -17.8049 186.288 36.627
2012 FEB 20 10:40 45.4954968990 -59592.374 6.6503 -17.8463 186.243 36.356
2012 FEB 20 10:50 45.4997298297 -61186.206 9.2016 -17.8877 186.199 35.977
2012 FEB 20 11:00 45.5040742316 -62772.651 11.7530 -17.9291 186.154 35.493
2012 FEB 20 11:10 45.5085295173 -64349.888 14.3044 -17.9704 186.110 34.907
2012 FEB 20 11:20 45.5130949894 -65916.118 16.8557 -18.0117 186.065 34.222
2012 FEB 20 11:30 45.5177697969 -67469.563 19.4070 -18.0529 186.021 33.442
2012 FEB 20 11:40 45.5225529990 -69008.469 21.9583 -18.0941 185.976 32.571
2012 FEB 20 11:50 45.5274435047 -70531.116 24.5096 -18.1353 185.932 31.613
2012 FEB 20 12:00 45.5324401149 -72035.813 27.0609 -18.1764 185.888 30.573
2012 FEB 20 12:10 45.5375415243 -73520.906 29.6121 -18.2174 185.843 29.453
2012 FEB 20 12:20 45.5427462907 -74984.783 32.1634 -18.2585 185.799 28.260
2012 FEB 20 12:30 45.5480528772 -76425.871 34.7145 -18.2994 185.754 26.997
2012 FEB 20 12:40 45.5534596325 -77842.646 37.2657 -18.3404 185.710 25.669
2012 FEB 20 12:50 45.5589647948 -79233.630 39.8168 -18.3813 185.666 24.279
2012 FEB 20 13:00 45.5645665115 -80597.401 42.3678 -18.4221 185.622 22.831
2000 ET70 GOLDSTONE MASTERLOG
==============================================================================
Receive TX
Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes
------------------------------------------------------------------------------
Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 183-601 | 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/2000ET70/2000ET70_planning.html
Asteroid Radar Astronomy