(292220) 2006 SU49

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(292220) 2006 SU49
Discovery [1]
Discovered bySpacewatch
Discovery siteKitt Peak National Obs.
Discovery date20 September 2006
MPC designation(292220) 2006 SU49
2006 SU49 · 2001 UV17
Apollo · NEO · PHA[1][2]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc14.95 yr (5,462 days)
Aphelion1.8533 AU
Perihelion0.9718 AU
1.4125 AU
1.68 yr (613 days)
0° 35m 13.56s / day
Earth MOID0.0008 AU · 0.3 LD
Physical characteristics
Mean diameter
0.377 km (estimate)[3]
Mass7.3×1010 kg (estimate)[3]

(292220) 2006 SU49, provisional designation 2006 SU49, is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group that had a small chance of impacting Earth in 2029.[2][3]

It was discovered on 20 September 2006, by the Spacewatch project at the University of Arizona using the dedicated 0.9-meter telescope at Kitt Peak National Observatory. The asteroid was calculated to measure 377 meters in diameter with a mass of 7.3×1010 kg.[3]


2006 SU49 had a 1 in 42,000 chance of impacting Earth on 22 January 2029. By 29 October 2006, it was listed with a Torino Scale impact risk value of 0. It was removed from the Sentry Risk Table on 23 November 2006.[4] It is now known that on 28 January 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 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 (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 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] It is also an Earth-crosser and Mars-crosser asteroid.

See also[edit]


  1. ^ a b c d e f "JPL Small-Body Database Browser: 292220 (2006 SU49)" (2016-10-02 last obs.). Jet Propulsion Laboratory. Retrieved 20 January 2018.
  2. ^ a b "292220 (2006 SU49)". Minor Planet Center. Retrieved 20 January 2018.
  3. ^ a b c d "2006 SU49 Impact Risk". Near Earth Object Program. NASA. Archived from the original on 2006-09-28.
  4. ^ "Sentry: Earth Impact Monitoring – Removed Objects". NASA/JPL CNEOS – Center for Near-Earth Object Studies. Retrieved 20 January 2018.

External links[edit]