Click on an object in the solar system or choose from the list at left to learn more
|H mag||Request Optical
|2010 XZ67||Dec 29||Imaging||Y||19.7||Y||Period unknown|
|(294739) 2008 CM||Jan 08||Astrometry||17.2||PHA, period unknown|
|2011 BT15||Jan 09-10||Imaging||21.7||Y||Y||PHA, NHATS, period unknown|
|2062 Aten||Jan 06-16||Imaging||Y||16.8||Yarkovsky candidate, 40.77-h period, Sr class|
|(251346) 2007 SJ||Jan 14-19||High-res Imaging||16.8||Y||Y||PHA, period unknown|
|2008 CM20||Jan 30||Astrometry||21.4||Period unknown|
|2013 BZ45||Feb 05||Astrometry||21.9||0.5'||Y||Y||PHA, NHATS, period unknown|
|(348306) 2005 AY28||Feb 13||Astrometry||21.5||0.5'||PHA, period unknown|
|2006 DP14||Feb 16-24||Imaging||18.8||1'||Y||Y||PHA, period unknown|
|2001 EB18||Feb 23||Astrometry||19.3||PHA, period unknown|
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