2007 VE191

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. 1 2 "MPEC 2007-W05 : 2007 VE191". IAU Minor Planet Center. 2007-11-16. Retrieved 2014-12-15. (K07VJ1E)
    2. 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.
    3. 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)
    4. 1 2 "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-12-15.
    5. ↑ "2007VE191 Ephemerides for 1 September 2015 through 10 December 2015". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 2014-12-15.
    6. ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2015-10-19.
    7. ↑ "NEODyS Impactor Table for 2007VE191". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 2015-10-19. (PS=–4.87)
    8. ↑ "JPL Close-Approach Data: (2007 VE191)" (last observation: 2007-11-28; arc: 13 days). Retrieved 2014-12-15.
    9. ↑ "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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