21436 Chaoyichi

21436 Chaoyichi
Discovery
Discovered byLINEAR
Discovery siteLincoln Lab ETS
Discovery date31 March 1998
Designations
(21436) Chaoyichi
1998 FL116
main-belt · background
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc9565 days (26.19 yr)
Aphelion2.3725454 AU (354.92774 Gm)
Perihelion2.0008870 AU (299.32843 Gm)
2.186716 AU (327.1281 Gm)
Eccentricity0.0849810
3.23 yr (1181.1 d)
226.1171°
0° 18m 17.281s / day
Inclination3.736916°
320.37494°
178.30874°
Known satellites1[2]
Physical characteristics
1.953±0.256 km[1]
2.87 h[1][3]
0.222±0.062[1]
15.4[1]

21436 Chaoyichi (provisional designation 1998 FL116) is a background asteroid and binary system[2] from the inner region of the asteroid belt, approximately 2 kilometers in diameter. It was discovered on 31 March 1998, by astronomers of the Lincoln Near-Earth Asteroid Research at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, United States.[1]

References

  1. ^ a b c d e f "21436 Chaoyichi (1998 FL116)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 April 2016.
  2. ^ a b Wm. Robert Johnston (31 December 2015). "Asteroids with Satellites". JohnstonArchive.net. Retrieved 15 January 2016.
  3. ^ Pravec, P.; Vokrouhlicky, D.; Polishook, D.; Scheeres, D.J.; et al. (2010). "Formation of asteroid pairs by rotational fission". Nature. 466 (7310): 1085–1088. arXiv:1009.2770. Bibcode:2010Natur.466.1085P. doi:10.1038/nature09315. PMID 20740010. (Lightcurve plots as supplemental data)


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