|Discovered by||Carolyn S. Shoemaker
Palomar Observatory (675)
|Discovery date||28 November 1994|
|MPC designation||1994 WR12|
|Minor planet category||Aten NEO|
|Aphelion||1.05 AU (Q)|
|Perihelion||0.456 AU (q)|
|Semi-major axis||0.756 AU (a)|
|Orbital period||0.66 yr|
|Mean anomaly||173° (M)|
|Longitude of ascending node||63.0°|
|Argument of perihelion||205°|
|Mass||2.9×109 kg (assumed)|
|Absolute magnitude (H)||22.1|
1994 WR12 (also written 1994 WR12) is a near-Earth asteroid with a poorly known orbit. It was first imaged on 26 November 1994, and was discovered on 28 November 1994 by Carolyn S. Shoemaker at Palomar Observatory (675). It has a diameter of about 130 meters, and is listed on the Sentry Risk Table. The next good chance to observe the asteroid may not be until November 2044 when the orbital uncertainty will allow it to pass somewhere between 0.03–0.19AU from Earth.
Virtual clones of the asteroid that fit the uncertainty in the known trajectory show 47 potential impacts between 2054 and 2075. It has about a cumulative 1 in 18,000 chance of impacting the Earth. The poorly known trajectory of this asteroid (Uncertainty=8) is further complicated by close approaches to Venus and Mercury.
- "MPEC 1994-Y05 : 1994 WR12". IAU Minor Planet Center. 1994-12-21. Retrieved 2011-10-17.
- "JPL Small-Body Database Browser: (1994 WR12)". Jet Propulsion Laboratory. 1994-12-31 last obs (arc=35 days). Retrieved 2011-10-17.
- "Earth Impact Risk Summary: 1994 WR12". NASA/JPL Near-Earth Object Program Office. Retrieved 2011-10-17.
- "Sentry Risk Table". NASA/JPL Near-Earth Object Program Office. 14 Oct 2011. Retrieved 2011-10-17.
- "JPL Close-Approach Data: (1994 WR12)". 1994-12-31 last obs (arc=35 days). Retrieved 2011-04-07.
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