2212 Hephaistos

2212 Hephaistos (1978 SB) is an Apollo asteroid and a NEO discovered on 27 September 1978 by L. I. Chernykh at the Crimean Astrophysical Observatory. It is named after the Greek god Hephaestus. It is the largest member of the Hephaistos asteroid group.

Hephaistos
Discovery
Discovered byLyudmila Chernykh
Discovery siteCrimean Astrophysical Observatory
Discovery date27 September 1978
Designations
(2212) Hephaistos
Pronunciation/hɛˈfstɒs/
Named after
Hephaestus
1978 SB
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc41.13 yr (15022 days)
Aphelion3.96741328 AU (593.516579 Gm)
Perihelion0.35068065 AU (52.461079 Gm)
2.159046967 AU (322.9888290 Gm)
Eccentricity0.83757618
3.17 yr (1158.8 d)
272.0812839243940°
0° 18m 38.442s / day
Inclination11.5582329°
27.569039°
209.3347492572090°
Earth MOID0.116104 AU (17.3689 Gm)
Physical characteristics
Dimensions6.64 km[2]
Mean radius
2.85 km
20 h (0.83 d)[1]
SG[1]
13.87[1]

    References

    1. "2212 Hephaistos (1978 SB)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 15 April 2016.
    2. "NEODyS 2012 Hephaistos". Near Earth Objects  Dynamic Site. Retrieved 18 March 2014.


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