(144898) 2004 VD17
| Discovery | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered by | LINEAR | ||||||||
| Discovery date | 7 November 2004 | ||||||||
| Designations | |||||||||
| Apollo asteroid, Earth-crosser asteroid Venus-crosser asteroid Mars-crosser asteroid | |||||||||
| 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) | ||||||||
| Jupiter MOID | 2.92847 AU (438.093 Gm) | ||||||||
| Physical characteristics | |||||||||
| Dimensions | 0.5-1.1 km | ||||||||
| Mass | 0.13-1.8×1012 kg | ||||||||
Mean density | 2.0? g/cm³ | ||||||||
Equatorial escape velocity | 0.0003–0.0006 km/s | ||||||||
| 1.99 h (0.083 d) | |||||||||
| 0.15 | |||||||||
| |||||||||
| E[2] | |||||||||
| 18.8 | |||||||||
(144898) 2004 VD17 (previously known by its provisional designation 2004 VD17) is a near-Earth asteroid once thought to have a low probability of impacting Earth on May 4, 2102.[3] From February to May 2006 it 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 May 20, 2006, and finally dropped to 0 on October 17, 2006. It was removed from the Sentry Risk Table on 14 February 2008.[5]
As of January 4, 2008, the Sentry Risk Table assigned 2004 VD17 a Torino value of 0 and an impact probability of 1 in 58.8 million for May 4, 2102.[6] This value was far below the background impact rate of objects this size.
2004 VD17 was discovered on November 7, 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 May 1, 2032, allowing a refinement to the orbit.[1]
Being ~580 meters in diameter, if 2004 VD17 were to impact land, it would produce a crater about 10 kilometres wide and an earthquake of magnitude 7.4.[7]
See also
- 3103 Eger
- 99942 Apophis
- Aubrite
- E-type asteroid
- Hungaria family
- List of notable asteroids
- Asteroid deflection strategies
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. 2006-04-17. Archived from the original on 2006-04-17. Retrieved 2013-08-07. (7.6e-04 = 1 in 1,320 chance)
- ^ David Morrison (March 1, 2006). "Asteroid 2004 VD17 classed as Torino Scale 2". Asteroid and Comet Impact Hazards (NASA). Retrieved 2011-11-06.
- ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2013-08-07.
- ^ a b "WayBack Machine archive from 4 January 2008". Wayback Machine. 2008-01-04. Archived from the original on 2008-01-04. Retrieved 2013-08-07. (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 2007-12-28.
