343158 Marsyas

343158 Marsyas
Discovery [1][2]
Discovered byCSS
Discovery siteCatalina Stn.
Discovery date29 April 2009
Designations
(343158) Marsyas
Named after
Marsyas [1][3]
(Greek mythology)
2009 HC82
NEO · Apollo[1][4]
Retrograde
Orbital characteristics [4]
Epoch 17 December 2020 (JD 2459200.5)
Uncertainty parameter 0
Observation arc17.17 yr (6,270 d)
Aphelion4.5656 AU
Perihelion0.4886 AU
2.5271 AU
Eccentricity0.8067
4.02 yr (1,467 d)
5.8661°
0° 14m 43.08s / day
Inclination154.37°
295.40°
298.88°
Earth MOID0.1471 AU (57.2 LD)
TJupiter1.3160
Physical characteristics
1.7 km (est. at 0.22)[5]
3.5 km (est. at 0.05)[5]
~20[2]
16.27[1][4]

343158 Marsyas (prov. designated 2009 HC82) is an asteroid on a retrograde orbit, classified as a large near-Earth object of the Apollo group. It may be an extinct comet or damocloid asteroid. The asteroid was discovered on 29 April 2009, by astronomers with the Catalina Sky Survey at the Catalina Station near Tucson, Arizona, in the United States.[1] Approximately 2 kilometers (1.2 miles) in diameter, it makes many close approaches to Earth, Venus, and Mars at a very high relative velocity. It was named after the satyr Marsyas from Greek mythology.[1][3]

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