Upcoming20130301

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Target List for 2013 March 1 Omnibus Proposal

List of near-Earth objects (NEOs) having Earth approach distances less than 0.4 AU that are observable using the Arecibo planetary radar between 2013 July 1 to Dec 31 with estimated SNR/day greater than 50. This list was auto-generated using a script which searched through all the NEOs listed in the Minor Planet Center database on 2013 Feb 1. Start and end times indicate the period during which it is possible to observe the target at Arecibo. They were calculated using 5 minute steps. After shortlisting the targets, the values (rise-set times, SNRs, etc.) will be calculated more accurately. (Table prepared by Shantanu Naidu, UCLA)


NOTE: You can find details on observing tracks here.

Object H Period (h) Period (h)
assumed?
Diameter (m) Diameter
derived
from H?
Start time End time Range (AU) SNR/day Notes
(1627 Ivar) 1929 SH 13.2 2.111 Yes 7625 yes 2013 JUL 01 08:20 2013 JUL 19 10:35 0.3215 54 Astrometry from 1929-2013. Spin period is 4.795 and diameter is ~9km (Should revise SNR numbers). Radar observations in Ostro et al. 1990.
(7753) 1988 XB 18.6 2.111 Yes 1000 No 2013 JUL 20 17:45 2013 JUL 23 18:20 0.1331 56 B-type asteroid (Bus & Binzel 2002). Observed at Arecibo In Nov 2004 (7.5 m resolution images). Unpublished shape model exists (Dreier et al. 2005). Diameter 1.7 km, spin rate 19.9 hrs. Should revise SNR numbers.
(11405) 1999 CV3 15.1 6.51 No 3400 No 2013 JUL 31 21:10 2013 AUG 14 00:00 0.2579 72 Period is from lightcurve. Sq-type asteroid.
(52760) 1998 ML14 17.5 14.98 No 810 No 2013 AUG 26 17:15 2013 SEP 20 14:05 0.0580 3348 Ostro et al. 2001 has a shape model. We had a 33 degree observing arc, so we have no constraint on spin pole. SC/OC=0.30+/-0.03 and p_v=0.17. Our viewing geometry will be different by 40-80 degrees from the 1998 observations. Could get a good spin pole constraint. MCN is interested in this one for sentimental reasons: It was the first object we did after I arrived at Arecibo.
(85774) 1998 UT18 19.2 34. No 900 No 2013 NOV 06 07:45 2013 DEC 08 13:20 0.1724 118 C-type (Bus and Binzel 2002). Observed by A in 2003 and 2008 (0.1 us baud images). SC/OC=0.25 (Benner et al. 2008). Looks elongated (330-630 meters in radar images, lightcurve amplitude of 0.8 mag). BW~0.6 Hz when range extent is on the lower side. Spin period < 33 hours. My estimates of the size are much lower than those in the EARN database. Lightcurve period of 34 hrs (Krugly et al. 2002) could be completely off as it was not sampled well. (Nolan PI?)
(137126) 1999 CF9 17.9 2.111 Yes 900 No 2013 AUG 10 17:55 2013 AUG 21 22:20 0.0645 914 Q type and a "medium-high" albedo. (SPN at Arecibo, PI)
(138095) 2000 DK79 15.8 2.111 Yes 2347 yes 2013 NOV 14 22:20 2013 NOV 18 23:50 0.1547 148 Not much known.
(152664) 1998 FW4 19.7 2.111 Yes 400 yes 2013 SEP 16 04:55 2013 OCT 03 15:35 0.0451 1608 Observed by A and G in 2009 (Tx power was only 70 kW at A). Up to 0.05 us baud resolution images. Looks like a contact binary. Highly eccentric orbit (e=0.72, Q=4.3 AU, q=0.7 AU). Viewing geometry differs by 120-150 degrees from 2009. (MB PI?)
(153349) 2001 PJ9 18.4 2.111 Yes 722 yes 2013 JUL 07 14:35 2013 JUL 29 06:45 0.0995 120 Not much known.
(232691) 2004 AR1 19.8 2.111 Yes 383 yes 2013 AUG 30 16:55 2013 SEP 07 17:35 0.0655 252 Not much known.
(251346) 2007 SJ 16.8 2.111 Yes 1491 yes 2013 DEC 25 21:00 2013 DEC 30 21:30 0.1239 162 Not much known. This object's CA is actually on January 14, 2014 at a RTT of ~50 seconds. Propose in next cycle?
(277475) 2005 WK4 20.1 2.111 Yes 334 yes 2013 AUG 07 09:40 2013 AUG 10 09:35 0.0207 27702 Not much known. Observed at Arecibo in Jul 2012. Only one CW spectra (SNR~10). Astrometry was reported. Closest approach till 2130. With 334 meter diameter, spin P < 5 hrs. (SPN at Arecibo and PI)
(285263) 1998 QE2 16.5 2.111 Yes 2750 No 2013 JUL 01 03:25 2013 JUL 06 06:00 0.1950 95 Will be observed at Arecibo May-June 2013. Probably do not need to ask for more time.
(329437) 2002 OA22 19.4 2.111 Yes 459 yes 2013 SEP 08 05:30 2013 SEP 21 07:10 0.0601 430 Not much known.
1997 WQ23 20.5 2.111 Yes 278 yes 2013 NOV 06 06:30 2013 NOV 18 06:25 0.0211 10775 Lost. ~10 degree uncertainty. 34-day arc in 1997. Jon says it's recoverable
2002 NV16 21.3 2.111 Yes 194 yes 2013 SEP 04 20:10 2013 SEP 16 19:35 0.0518 156 Not much known.
2006 CT 22.3 2.111 Yes 123 yes 2013 NOV 30 12:40 2013 DEC 22 10:10 0.0629 80 Not much known.
2007 CN26 20.8 2.111 Yes 243 yes 2013 AUG 28 11:05 2013 SEP 06 09:15 0.0305 3413 Not much known. Closest approach till 2085.
2007 XY9 21.0 2.111 Yes 222 yes 2013 JUL 16 23:00 2013 JUL 22 22:35 0.0760 81 Arcmin uncertainty. 3-year arc. Recoverable
2010 CL19 17.6 2.111 Yes 1038 yes 2013 NOV 28 22:45 2013 DEC 04 01:35 0.1065 142 Not much known.
2010 XZ67 19.8 2.111 Yes 383 yes 2013 DEC 29 02:50 2013 DEC 30 04:45 0.0639 368 Needs astrometry. 6-7 arcmin uncertainty. 137-day arc in 2010. Jon said it's recoverable.
2012 ER14 20.3 2.111 Yes 305 yes 2013 OCT 13 06:00 2013 OCT 31 09:10 0.0880 84 Needs recovery. ~0.6 degree uncertainty. 27-day arc in 2012. Jon said it's recoverable.
ISON C/2012 S1 2013 Dec 0.4439 Depending on size and spin period, could be observed with SNR of few 10s. For 5km nucleus and 10 hr rotation period, SNR/day~15. Optimistic SNR/day for 10 km nucleus and 10 hr period is 42. MCN-OK to try, but not likely that we'll get anything given our experience. Need to be careful about the request (could do a combined OH/radar proposal and say we'll do whatever's best).



[Entire List, including the lost objects:http://mel.ess.ucla.edu/radarwiki/index.php/Upcoming20130301/Lost]

[NHATS targets http://mel.ess.ucla.edu/radarwiki/index.php/Upcoming20130301/NHATS] (SNR/day threshold of 5)

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