2006 SU49
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- The correct title of this article is 2006 SU49. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
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 | |
|
|
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 |
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
- Near Earth Object Program Risk List
- Near Earth Objects removed from JPL risk tables
- 2006 SU49 object data
- The Spacewatch Project
- The Minor Planet Center