(292220) 2006 SU49

(292220) 2006 SU49
Discovery
Discovered by Spacewatch 0.9m telescope
Discovery date 20 September 2006
Designations
none
Apollo asteroid,
Earth-crosser asteroid
Mars-crosser asteroid
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 12.01 yr (4387 days)
Aphelion 1.85346 AU (277.274 Gm)
Perihelion 0.971632 AU (145.3541 Gm)
1.41254 AU (211.313 Gm)
Eccentricity 0.312140
1.68 yr (613.20 d)
75.0212°
0° 35m 13.506s / day
Inclination 2.51896°
303.151°
198.959°
Earth MOID 7.77602×10−6 AU (1.163276×103 km)
Jupiter MOID 3.17505 AU (474.981 Gm)
Jupiter Tisserand parameter 4.673
Physical characteristics
Dimensions ~380 meters (1,250 ft)[2]
Mass 7.3×1010 kg (assumed)
Temperature ? K
19.5[1]

    (292220) 2006 SU49 (also written 2006 SU49) is a near-Earth asteroid that had a 1 in 42000 chance of impacting Earth on January 22, 2029.[2] By October 29, 2006, it was listed with a Torino Scale impact risk value of 0. It was removed from the Sentry Risk Table on November 23, 2006.[3] It is now known that on January 28, 2029, the asteroid will be 0.00818 AU (1,224,000 km; 760,000 mi) from Earth.[1]

    It is a near-Earth asteroid that received minor attention 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 (292220) 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.

    (292220) 2006 SU49 briefly led the Earth-impact hazard list from September 27, 2006, through October 4, 2006, temporarily displacing (144898) 2004 VD17 from the number one position. At the time, both held a Torino scale of level 1 and were the only asteroids to hold a Torino value greater than 0.

    Even though (292220) 2006 SU49 has an Earth MOID of 0.0003 AU (45,000 km; 28,000 mi), the orbit and future close approaches are well determined with an orbital uncertainty of 0.[1]

    (292220) 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 7.3×1010 kg.[2]

    See also

    References

    1. 1 2 3 4 "JPL Close-Approach Data: 292220 (2006 SU49)". 2011-10-20. Retrieved 20 April 2016.
    2. 1 2 3 "2006 SU49 Impact Risk". Near Earth Object Program. WayBack Machine:NASA. Archived from the original on 2006-09-28.
    3. ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2013-09-03.

    External links

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