Loading AI tools
From Wikipedia, the free encyclopedia
(144898) 2004 VD17 (provisional designation 2004 VD17) is a sub-kilometer asteroid, classified as near-Earth object of the Apollo group once thought to have a low probability of impacting Earth on 4 May 2102.[3] It reached a Torino Scale rating of 2 and a Palermo Technical Impact Hazard Scale rating of -0.25.[3] With an observation arc of 17 years it is known that closest Earth approach will occur two days earlier on 2 May 2102 at a distance of about 5.5 million km.[1]
Discovery | |
---|---|
Discovered by | LINEAR |
Discovery date | 7 November 2004 |
Designations | |
Orbital characteristics[1] | |
Epoch 2022-Jan-21 (JD 2459600.5) | |
Uncertainty parameter 0 | |
Observation arc | 17.8 years |
Aphelion | 2.3958 AU (358.41 million km) |
Perihelion | 0.62008 AU (92.763 million km) |
1.5079 AU (225.58 million km) | |
Eccentricity | 0.58878 |
1.85 yr (676.34 d) | |
133.93° | |
0° 31m 56.428s / day | |
Inclination | 4.2239° |
224° | |
90.97° | |
Earth MOID | 0.0015 AU (220,000 km) |
Physical characteristics | |
320m[2] 580m (assumed)[3] 0.5–1.0 km (CNEOS) | |
Mass | (0.13–1.8)×1012 kg |
1.99 h (0.083 d) | |
E[2] | |
18.8 | |
2004 VD17 was discovered on 7 November 2004, by the NASA-funded LINEAR asteroid survey. The object is estimated by NASA's Near Earth Object Program Office to be 580 meters in diameter with an approximate mass of 2.6×1011 kg.[5]
Being approximately 580 meters in diameter, if 2004 VD17 were to impact land, it would create an impact crater about 10 kilometres wide and generate an earthquake of magnitude 7.4.[6]
From February to May 2006, 2004 VD17 was listed with a Torino Scale impact risk value of 2, only the second asteroid in risk-monitoring history to be rated above value 1.[7] With an observation arc of 1511 days, it was estimated to have a 1 in 1320 chance of impacting on 4 May 2102.[3] The Torino rating was lowered to 1 after additional observations on 20 May 2006, and finally dropped to 0 on 17 October 2006.
As of 4 January 2008, the Sentry Risk Table assigned 2004 VD17 a Torino value of 0 and an impact probability of 1 in 58.8 million for 4 May 2102.[5] This value was far below the background impact rate of objects this size. Further observations allowed it to be removed from the Sentry Risk Table on 14 February 2008.[8]
It will pass 0.021 AU (3,100,000 km; 2,000,000 mi) from the Earth on 1 May 2032, allowing a refinement to the orbit.[1]
It has a spectral type of E.[2] This suggests that the asteroid has a high albedo and is on the smaller size range for an object with an absolute magnitude of 18.8.
![]() | This section needs expansion. You can help by adding to it. (December 2021) |
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.