(89959) 2002 NT7: Difference between revisions
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<ref name=planetary>[http://www.planetary.org/news/2002/0725_Asteroid_2002_NT7_Under_Watch_But.html Asteroid 2002 NT7 Under Watch, But Probably Not Coming Our Way] (25 July 2002)</ref> |
<ref name=planetary>[http://www.planetary.org/news/2002/0725_Asteroid_2002_NT7_Under_Watch_But.html Asteroid 2002 NT7 Under Watch, But Probably Not Coming Our Way] {{webarchive|url=https://web.archive.org/web/20060405010848/http://www.planetary.org/news/2002/0725_Asteroid_2002_NT7_Under_Watch_But.html |date=2006-04-05 }} (25 July 2002)</ref> |
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Revision as of 13:26, 22 January 2018
| Discovery Perihelion | 0.8180 AU | |
|---|---|---|
| 1.7355 AU | ||
| Eccentricity | 0.5286 | |
| 2.29 yr (835 days) | ||
| 79.375° | ||
| 0° 25m 51.96s / day | ||
| Inclination | 42.333° | |
| 132.08° | ||
| 300.67° | ||
| Earth MOID | 0.0004 AU | |
| Physical characteristics | ||
| Dimensions | 1.407±0.085 km[3] | |
| Albedo | 0.224±0.053[3] | |
| 16.4[1] | ||
(89959) 2002 NT7 (also written
Description
Despite inflammatory press reports, the object had a "low probability" of impact, approximately one in a million.[4] Further observations of the object quickly re-rated the threat lower. As of July 25, 2002, the hazard rating on the Palermo scale had been lowered to -0.25. However, the discovery of an object with an initial Palermo hazard rating of 0.06[5] was a historical event for the NEO observation program.
2002 NT7 was removed from the Sentry Risk Table on August 1, 2002.[6] It is now known that on January 13, 2019 the asteroid will safely pass 0.4078 AU (61,010,000 km; 37,910,000 mi) from the Earth.[7]
On January 30, 2020 the asteroid will pass 0.02718 AU (4,066,000 km; 2,527,000 mi) from 2 Pallas.[8]
On July 29th, 2002, the impact for February 1, 2019 is ruled out.
References
- ^ a b c d "JPL Small-Body Database Browser: 89959 (2002 NT7)" (2017-03-15 last obs.). Jet Propulsion Laboratory. Retrieved 26 April 2017.
- ^ a b "89959 (2002 NT7)". Minor Planet Center. Retrieved 26 April 2017.
- ^ . Retrieved 26 April 2017.
- ^ a b Asteroid 2002 NT7 Under Watch, But Probably Not Coming Our Way Archived 2006-04-05 at the Wayback Machine (25 July 2002)
- ^ "Space rock 'on collision course'". BBC News. 24 July 2002. Retrieved 2007-12-28.
- ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2011-05-06.
- ^ "JPL Close-Approach Data: 89959 (2002 NT7)" (last observation: 2011-09-12; arc: 57 years). Retrieved 2011-11-04.
- ^ "NEODyS-2 Close Approaches for (89959) 2002NT7". Near Earth Objects - Dynamic Site. Retrieved 2011-11-05.