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2007 VE₁₉₁

2007 VE₁₉₁ is a sub-kilometer asteroid, classified as near-Earth asteroid of the Apollo group that was listed on the Sentry Risk Table.^[3]

Description[edit]

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 constellationofVirgo 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[edit]

External links[edit]

• 2007 VE191atNeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
• 2007 VE191atESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical properties · Summary
• 2007 VE191 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters