(144898) 2004 VD17
| Discovery | |
|---|---|
| Discovered by | LINEAR |
| Discovery date | 7 November 2004 |
| Designations | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 4778 days (13.08 yr) |
| Aphelion | 2.39574 AU (358.398 Gm) |
| Perihelion | 0.619854 AU (92.7288 Gm) |
| 1.50780 AU (225.564 Gm) | |
| Eccentricity | 0.588901 |
| 1.85 yr (676.26 d) | |
| 42.8439° | |
| 0° 31m 56.428s / day | |
| Inclination | 4.22348° |
| 224.055° | |
| 90.9290° | |
| Earth MOID | 0.00183487 AU (274,493 km) |
| Physical characteristics | |
| Dimensions | 0.5–1.1 km |
| Mass | (0.13–1.8)×1012 kg |
| 1.99 h (0.083 d) | |
| 0.15 | |
| E[2] | |
| 18.8 | |
(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]
Description
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.[4] The Torino rating was lowered to 1 after additional observations on 20 May 2006, and finally dropped to 0 on 17 October 2006. It was removed from the Sentry Risk Table on 14 February 2008.[5]
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.[6] This value was far below the background impact rate of objects this size.
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.[6]
It will pass 0.02 AU (3,000,000 km; 1,900,000 mi) from the Earth on 1 May 2032, allowing a refinement to the orbit.[1]
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.[7]
See also
- 3103 Eger
- 99942 Apophis
- Asteroid impact avoidance
- Aubrite
- E-type asteroid
- Hungaria family
- List of exceptional asteroids
References
- ^ a b "JPL Close-Approach Data: 144898 (2004 VD17)" (2009-01-03 last obs and observation arc=6.8 years). Retrieved 7 April 2016.
- ^ Luise, F. De; Perna, D.; Dotto, E.; Fornasier, S.; Belskaya, I.N.; Boattini, A. (2007). "Physical Investigation of the Potentially Hazardous Asteroid (144898) 2004 VD17". Icarus. 191 (2): 628–635. arXiv:0706.1140. Bibcode:2007Icar..191..628D. doi:10.1016/j.icarus.2007.05.018.
- ^ "WayBack Machine archive from 17 April 2006". Wayback Machine. 17 April 2006. Archived from the original on 17 April 2006. Retrieved 7 August 2013. (7.6e-04 = 1 in 1,320 chance)
- ^ David Morrison (1 March 2006). "Asteroid 2004 VD17 classed as Torino Scale 2". Asteroid and Comet Impact Hazards (NASA). Archived from the original on 14 October 2011. Retrieved 6 November 2011.
- ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 7 August 2013.
- ^ a b "WayBack Machine archive from 4 January 2008". Wayback Machine. 4 January 2008. Archived from the original on 4 January 2008. Retrieved 7 August 2013. (1.7e-08 = 1 in 58,824,000 chance)
- ^ Kimm Groshong (1 March 2006). "New asteroid at top of Earth-threat list". New Scientist. Retrieved 28 December 2007.
