Discovery date 15 November 2007 Absolute magnitude 23.6 | MPC designation 2007 VE191 Discovered 15 November 2007 | |
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Discovered by Mt. Lemmon Survey (G96) Observation arc 13 days(last seen 2007) Aphelion 3.1065 AU (464.73 Gm) (Q) Similar (33342) 1998 WT24, Kepler‑440b, WISE J22460757‑0526350, 22P/Kopff, 1566 Icarus | ||
2007 VE191 (also written 2007 VE191) is an Apollo near-Earth asteroid that was listed on the Sentry Risk Table. 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. 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, 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, but was still listed at NEODyS with odds of 1 in 3 million for 27 November 2015 during the approach window.
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. On 28 November 2007, it passed 0.0128 AU (1,910,000 km; 1,190,000 mi) from Earth. 2007 VE191 has an observation arc of 13 days with an uncertainty parameter of 7, which means its orbit is poorly constrained. 2007 VE191 was last observed on 28 November 2007. By 1 December 2007, the asteroid had faded to below magnitude 25.
With an absolute magnitude of 23.6, 2007 VE191 is about 50–110 meters in diameter.