(88710) 2001 SL9 (provisional designation 2001 SL9) is a sub-kilometer asteroid and binary system, classified as near-Earth object of Apollo group[1] discovered by NEAT at Palomar Observatory on 18 September 2001. It measures approximately 960 meters in diameter, while its 2001-discovered minor-planet moon has an estimated diameter of 200 meters based on a secondary to primary size ratio of 0.28.[2]

Near-Earth asteroid

Although 2001 SL9 is classified as a near-Earth object, it does not pose any threats. It has never, nor will it ever in the next century, come closer than 15,000,000 km (0.1 AU) from Earth or Venus.[1] However, the asteroid would make a good target for a spacecraft flyby, as a flyby to 2001 SL9 would only require a delta-v of 5.4 km/s.[6]

Moon

2001 SL9 has one minor-planet moon. It was discovered from lightcurve observations[6] made by Czech astronomer Petr Pravec and collaborators.[2] This moon is approximately 200 m (660 ft) in diameter. Its semi-major axis is 1.6 km (0.99 mi) and its orbital period is 16.4 hours.[2]

References

  1. ^ a b c d e f "88710 (2001 SL9)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2088710. Retrieved 7 April 2016.
  2. ^ a b c d e f Johnston, Robert (1 September 2005). "(88710) 2001 SL9". Johnston Archive. Retrieved 26 December 2013.
  3. ^ "Asteroids Do Have Satellites". Asteroids III. 2002. Bibcode:2002aste.book..289M.
  4. ^ a b c "HEC: Exoplanets Calculator". Planetary Habitability Laboratory. University of Puerto Rico. Archived from the original on 5 September 2019. Retrieved 27 December 2013.
  5. ^ Green, Daniel (3 November 2001). "IAUC 7742: 2001fd; 2001fe; 2001 SL_9". International Astronomical Union. Harvard University. Retrieved 27 December 2013.
  6. ^ a b Benner, Lance (14 December 2004). "BINARY NEAR-EARTH ASTEROIDS DETECTED BY RADAR". Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 30 December 2013.
Allikas: https://en.wikipedia.org/wiki/(88710)_2001_SL9
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