(144898) 2004 VD17

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(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
Surface temp. min mean max
Kelvin ~227 K
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 create an impact crater about 10 kilometres wide and generate an earthquake of magnitude 7.4.[7]

See also[edit]

References[edit]

  1. ^ a b "JPL Close-Approach Data: 144898 (2004 VD17)" (2009-01-03 last obs and observation arc=6.8 years). Retrieved 7 April 2016. 
  2. ^ 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. Bibcode:2007Icar..191..628D. arXiv:0706.1140Freely accessible. doi:10.1016/j.icarus.2007.05.018. 
  3. ^ "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)
  4. ^ David Morrison (March 1, 2006). "Asteroid 2004 VD17 classed as Torino Scale 2". Asteroid and Comet Impact Hazards (NASA). Archived from the original on 2011-10-14. Retrieved 2011-11-06. 
  5. ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2013-08-07. 
  6. ^ 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)
  7. ^ Kimm Groshong (1 March 2006). "New asteroid at top of Earth-threat list". New Scientist. Retrieved 2007-12-28. 

External links[edit]