(410777) 2009 FD
Synodic rotation period | ||
22.1[1][4] | ||
(410777) 2009 FD is a
Until 2019, the asteroid's modelled orbit placed it at risk of a possible future collision with Earth in 2185. With a Palermo Technical Impact Hazard Scale rating of -0.44, it had the fifth highest impact threat[b] of all known asteroids based on its estimated diameter, kinetic yield, impact probability, and time interval.[12] Observations to 2019 extended the observation arc by four years and detected a favourable Yarkovsky effect, which ruled out impact in 2185.[13] Using observations from 16 November 2020, the asteroid was removed from the Sentry risk table on 19 November 2020.
Discovery
2009 FD was initially announced as discovered on 16 March 2009 by
Binary
NASA's Near Earth Program originally estimated its size to be 130 metres in diameter based on an assumed
Future approaches
The JPL Small-Body Database shows that 2009 FD will make two very close approaches in the late 22nd century, in 2185 and 2190. As of 2016, the approach of 29 March 2185 had a 1 in 710 chance of impacting Earth.[7] The nominal 2185 Earth approach distance was 0.009 AU (1,300,000 km; 840,000 mi).[16] Orbit determination for 2190 is complicated by the 2185 close approach.[16] The precise distance that it will pass from Earth and the Moon on 29 March 2185 will determine the 30 March 2190 distance. 2009 FD should pass closer to the Moon than Earth on 29 March 2185.[16] An impact by 2009 FD would cause severe devastation to a large region or tsunamis of significant size.[21]
Past Earth-impact estimates
In January 2011, near-Earth asteroid 2009 FD (with observations through 7 December 2010) was listed on the JPL Sentry Risk Table with a 1 in 435 chance of impacting Earth on 29 March 2185.
On 14 June 2019, Alessio Del Vigna and colleagues published a new analysis, which incorporates astrometry taken in 2019. Using both
See also
- List of asteroid close approaches to Earth, for other close approaches
Notes
- ^ a b Naidu, S. (2015) from observations taken in November 2015: Per private communication with the LCDB. Rotation period of at least 2.5 hours. Diameter estimate of 0.150 kilometers. Summary figures for (410777) at the LCDB
- ^ Behind: 99942 Apophis @ 1.10, (89959) 2002 NT7 @ 0.18, (29075) 1950 DA @ 0.17, (144898) 2004 VD17 @ -0.25
- ^ At an apparent magnitude of 23, 2009 FD was roughly 4 million times fainter than can be seen with the naked eye.
Math:
References
- ^ a b c d e f "JPL Small-Body Database Browser: 410777 (2009 FD)" (2015-12-01 last obs.). Jet Propulsion Laboratory. Archived from the original on 16 December 2019. Retrieved 30 January 2018.
- ^ a b c d "410777 (2009 FD)". Minor Planet Center. Retrieved 30 January 2018.
- ^ a b Johnston, Wm. Robert (27 November 2015). "Asteroids with Satellites Database – (410777) 2009 FD". Johnston's Archive. Retrieved 30 January 2018.
- ^ a b c d "LCDB Data for (410777)". Asteroid Lightcurve Database (LCDB). Retrieved 30 January 2018.
- ^ S2CID 45559179. (listed as K09F00D)
- ^ a b c d "(410777) 2009 FD". Central Bureau for Astronomical Telegrams. 19 November 2015. Archived from the original on 4 March 2016. Retrieved 9 July 2017.
- ^ a b "Earth Impact Risk Summary: 2009 FD". NASA/JPL Near-Earth Object Program Office. Archived from the original on 18 January 2016. Retrieved 1 May 2014.
- ^ Behrend, Raoul. "Asteroids and comets rotation curves – (410777) 2009 FD". Geneva Observatory. Retrieved 30 January 2018.
- ISSN 1052-8091.
- ISSN 1052-8091.
- ^ S2CID 55524612.
- ^ a b "Sentry Risk Table". NASA Near-Earth Object Program. Archived from the original on 21 January 2016. Retrieved 8 June 2012.
- ^ S2CID 189762523
- IAU Minor Planet Center. 17 March 2009. Retrieved 9 January 2013. (K09F00D)
- ^ "MPEC 2010-U20 : Editorial Notice". IAU Minor Planet Center. 19 October 2010. Retrieved 29 December 2014.
- ^ a b c d e f "JPL Close-Approach Data: (2009 FD)" (last observation: 2014-04-07; arc: 5.11 years). Archived from the original on 19 December 2013. Retrieved 1 May 2014.
- ^ Near Earth Asteroid 2009 FD - whilst you were sleeping! (ice in space)
- ^ "2009 FD Ephemerides for 1 April 2014". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 17 December 2013.
- ^ Dr. Lance A. M. Benner (17 March 2014). "Goldstone Asteroid Schedule". NASA/JPL Asteroid Radar Research. Archived from the original on 19 November 1996. Retrieved 21 March 2014.
- ^ a b c "Earth Impact Risk Summary: 2009 FD (arc=650 days)" (2011-01-11 computed on 14 December 2010). Wayback Machine: JPL. Archived from the original on 11 January 2011. Retrieved 14 February 2014. (2.3e-03 = 1 in 435 chance)
- ^ Chapman, Clark R. (9 January 2003). "How a Near-Earth Object Impact Might Affect Society" (PDF). OECD. Archived from the original (PDF) on 17 February 2005. Retrieved 14 November 2018.
- ^ "Earth Impact Risk Summary: 2009 FD (arc=1807 days)" (2014-02-10 computed on 7 February 2014). Wayback Machine: JPL. Archived from the original on 10 February 2014. Retrieved 1 May 2014.
- ^ "(410777) 2009FD". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 1 May 2014. (2.64e-3 = 1 in 379 chance)
- ^ "Sentry Notes". NASA/JPL Near-Earth Object Program Office. Archived from the original on 16 February 2011. Retrieved 1 May 2014.
External links
- Planetary Radar Science Group
- ESA/ESO Collaboration Successfully Tracks Its First Potentially Threatening Near-Earth Object (ESO 21 January 2014)
- (410777) 2009 FD at NeoDyS-2, Near Earth Objects—Dynamic Site
- (410777) 2009 FD at ESA–space situational awareness
- (410777) 2009 FD at the JPL Small-Body Database