Astronomy:21436 Chaoyichi

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21436 Chaoyichi
Discovery
Discovered byLINEAR
Discovery siteLincoln Lab ETS
Discovery date31 March 1998
Designations
(21436) Chaoyichi
1998 FL116
Minor planet categorymain-belt · background
Orbital characteristics[2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc9565 days (26.19 yr)
|{{{apsis}}}|helion}}2.3725454 astronomical unit|AU (354.92774 Gm)
|{{{apsis}}}|helion}}2.0008870 AU (299.32843 Gm)
2.186716 AU (327.1281 Gm)
Eccentricity0.0849810
Orbital period3.23 yr (1181.1 d)
Mean anomaly226.1171°
Mean motion0° 18m 17.281s / day
Inclination3.736916°
Longitude of ascending node320.37494°
178.30874°
Known satellites1[1]
Physical characteristics
Mean diameter1.953±0.256 km[2]
Rotation period2.87 h[2][3]
Geometric albedo0.222±0.062[2]
Absolute magnitude (H)15.4[2]


21436 Chaoyichi (provisional designation 1998 FL116) is a background asteroid and binary system[1] 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.[2]

References

  1. 1.0 1.1 Wm. Robert Johnston (31 December 2015). "Asteroids with Satellites". http://www.johnstonsarchive.net/astro/asteroidmoons.html#1. Retrieved 15 January 2016. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 "21436 Chaoyichi (1998 FL116)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=21436;cad=1. 
  3. Pravec, P. et al. (2010). "Formation of asteroid pairs by rotational fission". Nature (466): 1085–1088.  (Lightcurve plots as supplemental data)

External links