Click on an object in the solar system or choose from the list at left to learn more
|H mag||Request Optical
|(68267) 2001 EA16||Oct 11-14||Imaging||16.8||Y||Period unknown|
|2340 Hathor||Oct 14-30||High-res Imaging||20.0||Y||Y||PHA, period unknown, Sq type|
|2012 KY3||Oct 20||Astrometry||18.6||PHA, period unknown|
|(36017) 1999 ND43||Oct 30||Astrometry||19.1||11.4-h period, Sl type|
|(163818) 2003 RX7||Nov 07||Astrometry||18.4||PHA, 2.6-h period|
|(85713) 1998 SS49||Nov 21||Astrometry||15.6||PHA, period unknown|
|(393908) 2005 UH3||Nov 23-30||Imaging||16.4||Y||Period unknown|
|(214088) 2004 JN13||Dec 03-12||Imaging||15.0||Y||Period unknown|
|(345705) 2006 VB14||Dec 12||Astrometry||18.5||3.25-h period|
|(204131) 2003 YL||Dec 04-23||Imaging||19.8||Y||Period unknown|
|2001 XY10||Dec 21||Astrometry||19.1||Period unknown, Sk class|
|2005 YQ96||Dec 26-31||High-res Imaging||20.4||Y||Y||PHA, period unknown|
|2007 EC||Jan 06||Astrometry||16.4||2 deg!||NHATS, period unknown|
|2007 EJ||Jan 07||Astrometry||18.1||Period unknown|
|(357439) 2004 BL86||Jan 27||High-res Imaging||19.1||4'||Y||Y||PHA, period unknown|
|(90416) 2003 YK118||Feb 12-27||Imaging||18.5||Y||Period unknown|
|2002 RQ25||Feb 23-03||Imaging||20.4||Y||Y||NHATS, period unknown|
|(285331) 1999 FN53||May 11-16||High-res Imaging||18.3||0.5'||Y||Y||Period unknown|
|2010 NY65||Jun 19-01||Imaging||21.4||Y||PHA, period unknown|
|1566 Icarus||Jun 17-21||High-res Imaging||Y||16.9||Y||Y||PHA, 2.27-h period|
|(85989) 1999 JD6||Jul 09-08||High-res Imaging||Y||17.1||Y||Y||PHA, 7.68-h period, K type|
|2011 UW158||Jul 12-17||High-res Imaging||Y||19.4||Y||Y||PHA, NHATS, speckle, period unknown|
|(385186) 1994 AW1||Jul 19-02||High-res Imaging||Y||17.5||Y||Y||BINARY, PHA, 2.52-h period, Sa type|
|(206378) 2003 RB||Aug 15-23||High-res Imaging||18.7||Y||Y||PHA, 16+ h period|
|2009 FD||Oct 26-02||High-res Imaging||22.1||Y||Y||Non-zero impact hazard, 5.87-h period|
|2005 UL5||Nov 12-16||Imaging||20.2||Y||PHA, period unknown|
|(163899) 2003 SD220||Dec 01-18||High-res Imaging||16.9||Y||Y||PHA, NHATS, period unknown|
|(163696) 2003 EB50||Dec 04-10||Imaging||16.4||27.2-h period|
|(33342) 1998 WT24||Dec 10-21||High-res Imaging||17.9||Y||Y||PHA, speckle, 3.697-h period|
|2002 AC5||Dec 22-27||Imaging||19.9||Y||PHA, period unknown|
|(294739) 2008 CM||Dec 28-31||High-res Imaging||17.3||Y||Y||PHA, 3.054-h period|
The Arecibo Planetary Radar discovered that near-Earth Asteroid 2001 SN263 is a triple asteroid system.
The Arecibo Asteroid Dynamics Workshop was held 2003 Feb 2-4 at Arecibo Observatory. Click Here for the workshop web site.
2000 DP107 was the first asteroid identified by radar as a binary system. The primary is roughly spherical with a diameter of 800 meters (a half mile) and the smaller secondary, which orbits it in 1.8 days, is about 300 meters (1000 feet).
The primary has a low density of 1.7 and is assumed to be a "rubble pile" of rocks and voids. It is spinning at a rate near the breakup point for strengthless bodies, and therefore any slight gravitational disturbance can pull it apart. Probably an encounter with the gravity of a planet created the binary by pulling apart the primary.
Four more binary systems have been discovered by radar among the near-Earth asteroids, making one of every 6 a binary.
The illuminated front of a roughly spherical primary is visible, as well as a secondary at different phases of the orbital cycle. In this image the secondary appears much smaller than the primary because its spin rate is lower. The actual size ratio is 8 to 3. Also, the orbit appears elliptical in this image but it is circular in space.
More on 2000 DP107:
Margot web page ,  Klet Observatory optical data ,  IAU Circular #7496 ,  IAU Circular #7503 ,  Table from NeoDys,  Orbit diagram from JPL
Last modified by Alice 23 apr 02