2009 KK
2009 KK is an Apollo near-Earth asteroid which was listed for several weeks in May and June 2009 on the Sentry Risk Table with a Torino Scale rating of 1.[3] There was a 1 in 10000 chance of an impact on 29 May 2022.[3] On 22 May 2009, it was listed as one of two near-earth objects assessed above Level 0 for potential impacts within 100 years, the other being 2007 VK184. As of 10 June 2009 it was downgraded to Level 0 as the cumulative Earth-impact probability was assessed as 7.9e-06 or 1 in 127,000.[4] On 17 June 2009, JPL removed 2009 KK from the list of potential Earth impactors.[5] It is now known that on 4 May 2022 the asteroid will be 0.475 AU (71,100,000 km; 44,200,000 mi) from Earth.[2]
| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Survey |
| Discovery site | Summerhaven, Arizona, USA |
| Discovery date | May 7, 2009 |
| Designations | |
| 2009 KK | |
| MPO 218092 | |
Apollo  NEO | |
| Orbital characteristics[2] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 1[1] | |
| Observation arc | 953[1] d |
| Aphelion | 2.18591 AU (327.007 Gm) |
| Perihelion | 0.81835 AU (122.423 Gm) |
| 1.50213 AU (224.715 Gm) | |
| Eccentricity | 0.45521 |
| 1.84 yr (672.452 d) 1.84 yr | |
| 143.59° | |
| 0° 32m 6.756s /day | |
| Inclination | 18.2159° |
| 68.1587° | |
| 247.32° | |
| Earth MOID | 0.0000955542 AU (14,294.70 km)[2] |
| Mercury MOID | 0.3949 AU (59,080,000 km)[1] |
| Jupiter MOID | 3.23017 AU (483.227 Gm)[2] |
| Physical characteristics | |
| 20.5[2] | |
2194 passage
2009 KK may pass as close as 0.006 AU (900,000 km; 560,000 mi) from Earth on 2194-Jun-02.[2] But the nominal solution shows the asteroid passing 0.038 AU (5,700,000 km; 3,500,000 mi) from Earth.[2]
References
- "2009 KK". Minor Planet Center. Retrieved 16 August 2017.
- "(2009 KK)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 3460260. Retrieved 16 August 2017.
- "2009 KK Impact Risk". Near Earth Object Program. NASA. Archived from the original on 4 June 2009.
- "WayBack Machine archive from 11 June 2009". Wayback Machine. 11 June 2009. Archived from the original on 11 June 2009. Retrieved 22 May 2009.
- "NEOs Removed from Impact Risks Tables". Near Earth Object Program. NASA. 17 June 2009. Archived from the original on 18 June 2009. Retrieved 17 June 2009.
