2006 SU49

From Wikipedia, the free encyclopedia

The correct title of this article is 2006 SU49. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
2006 SU49
Discovery A
Discoverer Spacewatch 0.9m telescope
Discovery date September 20, 2006
Alternate
designations
B
none
Category Apollo asteroid,
Earth-crosser asteroid
Mars-crosser asteroid
Orbital elements C
Epoch September 26, 2006 (MJD 54004.1)
Eccentricity (e) 0.312416
Semi-major axis (a) 1.41277 AU
Perihelion (q) 0.9714 AU
Aphelion (Q) 1.8541 AU
Orbital period (P) 613.355 days
Mean orbital speed  ? m/s
Inclination (i) 2.522°
Longitude of the
ascending node
(Ω)
303.28°
Argument of
perihelion
(ω)
198.869°
Mean anomaly (M) 241.656°
Physical characteristics D
Dimensions 0.380 km
Mass 7.4×1010 kg
Density 2.6 g/cm³
Surface gravity  ? m/s²
Escape velocity  ? km/s
Rotation period  ? d
Spectral class  ?
Absolute magnitude 19.581
Albedo (geometric)  ?
Mean surface
temperature
 ? K
This box: view  talk  edit

2006 SU49 (also written 2006 SU49) is a near-Earth asteroid with a low but non-zero probability of impacting Earth in 2029. As of October 29, 2006 it was listed with a Torino Scale impact risk value of 0.

2006 SU49 is a near-Earth asteroid that caused a brief period of minor concern in late September and early October 2006 because initial observations indicated a higher than usual probability that it would strike the Earth in 2029. However, the Near Earth Object (NEO) Office at NASA's Jet Propulsion Laboratory (JPL) removed 2006 SU49 from its risk list as additional observations provided improved predictions that eliminated the possibility of an impact on Earth or the Moon through 2106. Similarly, NEODyS estimates show a zero impact probability through 2080.

2006 SU49 briefly led the Earth-impact hazard list from September 27, 2006 through October 4, 2006 temporarily displacing 2004 VD17 from the number one position. At the time, both held a Torino scale of level 1 and were the only listed asteroids (other than 1950 DA) to hold a Torino value greater than 0.

2006 SU49 was discovered on September 20, 2006 by the Spacewatch project at the University of Arizona. The object is estimated at 380 meters in diameter with a mass of about 7.4x1010 kg.

[edit] See also

[edit] External links

Languages