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 | |||||||||
| 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 | |||||||||
| 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. 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. 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.
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. 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.
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.
Being ~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.
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