2007 VE191
| Discovery[1] | |
|---|---|
| Discovered by | Mt. Lemmon Survey (G96) |
| Discovery date | 15 November 2007 |
| Designations | |
| MPC designation | 2007 VE191 |
| Apollo NEO[2] | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 7 | |
| Observation arc |
13 days (last seen 2007) |
| Aphelion | 3.1065 AU (464.73 Gm) (Q) |
| Perihelion | 0.71060 AU (106.304 Gm) (q) |
| 1.9085 AU (285.51 Gm) (a) | |
| Eccentricity | 0.62767 (e) |
| 2.64 yr (963.04 d) | |
| 12.440° (M) | |
| 0° 22m 25.752s /day (n) | |
| Inclination | 5.3847° (i) |
| 244.33° (Ω) | |
| 254.07° (ω) | |
| Earth MOID | 0.000169707 AU (25,387.8 km) |
| Jupiter MOID | 1.99284 AU (298.125 Gm) |
| Physical characteristics | |
| Dimensions |
~63 meters[3] 50–110 meters[4] |
| 23.6[2] | |
|
| |
2007 VE191 (also written 2007 VE191) is an Apollo near-Earth asteroid that was listed on the Sentry Risk Table.[3] It is estimated to be roughly 63 meters in diameter. In 2015 it was known to have a 1 in 63,000 chance of impacting Earth on 27 November 2015.[3] However, the nominal best-fit orbit showed that 2007 VE191 would be roughly 0.5 AU (75,000,000 km; 46,000,000 mi) from Earth on 27 November 2015 with an apparent magnitude of roughly +25 in the constellation of Virgo about 50 degrees from the Sun,[5] and the same nominal orbit gave a distance of closest approach to Earth of a little under 0.4 AU a few weeks earlier. It was removed from the Sentry Risk Table on 17 September 2015,[6] but was still listed at NEODyS with odds of 1 in 3 million for 27 November 2015 during the approach window.[7]
2007 VE191 was discovered on 15 November 2007 by the Mount Lemmon Survey at an apparent magnitude of 20 using a 1.5-meter (59 in) reflecting telescope.[1] On 28 November 2007, it passed 0.0128 AU (1,910,000 km; 1,190,000 mi) from Earth.[8] 2007 VE191 has an observation arc of 13 days with an uncertainty parameter of 7, which means its orbit is poorly constrained.[2] 2007 VE191 was last observed on 28 November 2007.[2] By 1 December 2007, the asteroid had faded to below magnitude 25.[9]
With an absolute magnitude of 23.6,[2] 2007 VE191 is about 50–110 meters in diameter.[4]
References
- 1 2 "MPEC 2007-W05 : 2007 VE191". IAU Minor Planet Center. 2007-11-16. Retrieved 2014-12-15. (K07VJ1E)
- 1 2 3 4 5 6 "JPL Small-Body Database Browser: (2007 VE191)" (last observation: 2007-11-28; arc: 13 days). Jet Propulsion Laboratory. Retrieved 30 March 2016.
- 1 2 3 "Earth Impact Risk Summary: 2007 VE191". NASA/JPL Near-Earth Object Program Office. Archived from the original on September 5, 2015. Retrieved 2014-12-15. (PS=–2.47)
- 1 2 "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-12-15.
- ↑ "2007VE191 Ephemerides for 1 September 2015 through 10 December 2015". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 2014-12-15.
- ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2015-10-19.
- ↑ "NEODyS Impactor Table for 2007VE191". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 2015-10-19. (PS=–4.87)
- ↑ "JPL Close-Approach Data: (2007 VE191)" (last observation: 2007-11-28; arc: 13 days). Retrieved 2014-12-15.
- ↑ "2007VE191 Ephemerides for 1 October 2007 through 4 December 2007". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 2014-12-15.
External links
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