(144898) 2004 VD17

Sub-kilometre asteroid March 2020 yes #FFC2E0 (144898) 2004 VD 17 LINEAR 7 November 2004 NEO Apollo Earth-crosser Venus-crosser Mars-crosser 17.8 years 0 2022-Jan-21 (JD 2459600.5) 1.5079 AU e6km unit 0.62008 AU e6km unit 2.3958 AU e6km unit on 0.58878 1.85 yr (676.34 d) 4.2239° 224° 90.97° 133.93° 320m580m (assumed)0.5–1.0 km (CNEOS) 0.13 – 1.8 12 kg E 18.8 0.532341 ms / day 1.99 h d on on 0.0015 AU km on (144898) 2004 VD 17 is a sub-kilometer asteroid, classified as a near-Earth object of the Apollo group once thought to have a low probability of impacting Earth on 4 May 2102. It reached a Torino Scale rating of 2 and a Palermo scale rating of −0.25 (an impact hazard of about 56% of the background level). 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. +Close approaches Date JPL SBDBnominal geocentricdistance uncertaintyregion(3-sigma)2032-05-01 3140133 km ± 127 km2102-05-02 5568961 km ± 50 thousand km2196-05-05 996859 km ± 354 thousand km History 2004 VD 17 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 2.6e11 kg. Being approximately 580 meters in diameter, if 2004 VD 17 were to impact land, it would create an impact crater about 10 kilometres wide and generate an earthquake of magnitude 7.4. Elevated risk estimate in 2006 From February to May 2006, 2004 VD 17 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. With an observation arc of 1511 days, it was estimated to have a 1 in 1320 chance of impacting on 4 May 2102. The Torino rating was lowered to 1 after additional observations on 20 May 2006, and finally dropped to 0 on 17 October 2006. 2008 observations As of 4 January 2008, the Sentry Risk Table assigned 2004 VD 17 a Torino value of 0 and an impact probability of 1 in 58.8 million for 4 May 2102. 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. It will pass 0.021 AU km mi on on from Earth on 1 May 2032, allowing a refinement to the orbit. Properties It has a spectral type of E. 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. December 2021 See also 3103 Eger, possible parent of the Aubrite asteroids 99942 Apophis Asteroid impact avoidance Aubrite asteroid family E-type asteroid Hungaria family of asteroids List of exceptional asteroids References March 1, 2006 Asteroid 2004 VD17 classed as Torino Scale 2 Asteroid and Comet Impact Hazards (NASA) David Morrison David Morrison (astrophysicist) http://impact.arc.nasa.gov/news_detail.cfm?ID=167 2011-11-06 dead https://web.archive.org/web/20111014235559/https://impact.arc.nasa.gov/news_detail.cfm?ID=167 2011-10-14 JPL Close-Approach Data: 144898 (2004 VD17) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2004VD17&view=OPC 2021-12-12 1 March 2006 New asteroid at top of Earth-threat list New Scientist Kimm Groshong https://www.newscientist.com/article/dn8788-new-asteroid-at-top-of-earththreat-list.html 2007-12-28 Luise F. De Perna, D. Dotto, E. Fornasier, S. Belskaya, I.N. Boattini, A. Physical Investigation of the Potentially Hazardous Asteroid (144898) 2004 VD17 Icarus 191 2 628–635 2007 10.1016/j.icarus.2007.05.018 0706.1140 2007Icar..191..628D 14400781 Date/Time Removed listed as 144898 NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/removed.html https://web.archive.org/web/20080301214903/http://neo.jpl.nasa.gov:80/risk/removed.html dead 2008-03-01 2021-12-13 2006-04-17 WayBack Machine archive from 17 April 2006 Wayback Machine http://neo.jpl.nasa.gov/risk/2004vd17.html https://web.archive.org/web/20060417155057/http://neo.jpl.nasa.gov/risk/2004vd17.html 2006-04-17 2013-08-07 dead (7.6e-04 = 1 in 1,320 chance) 2008-01-04 WayBack Machine archive from 4 January 2008 Wayback Machine http://neo.jpl.nasa.gov/risk/a144898.html https://web.archive.org/web/20080104020006/http://neo.jpl.nasa.gov/risk/a144898.html 2008-01-04 2013-08-07 dead (1.7e-08 = 1 in 58,824,000 chance) Horizons Batch for 2032-May-01 22:37 UT JPL Horizons https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272004+VD17%27&START_TIME=%272032-May-01%2022:37%27&STOP_TIME=%272032-May-02%27&STEP_SIZE=%271+day%27&QUANTITIES=%2720,39%27 https://web.archive.org/web/20211212184929/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272004+VD17%27&START_TIME=%272032-May-01+22%3A37%27&STOP_TIME=%272032-May-02%27&STEP_SIZE=%271+day%27&QUANTITIES=%2720%2C39%27 2021-12-12 live 2021-12-12 External links 144898 144898 2004VD17 144898 (144897) 2004 UX10 144898 (144899) 2004 VX34 144898 144898 144898 Category:Near-Earth objects removed from the Sentry Risk Table 20041107