80 Sappho

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80 Sappho
80Sappho (Lightcurve Inversion).png
A three-dimensional model of 80 Sappho based on its light curve.
Discovery
Discovered by Norman Robert Pogson
Discovery date May 2, 1864
Designations
Named after Sappho
Alternative names  
Minor planet category Main belt
Orbital characteristics[1]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 412.343 Gm (2.756 AU)
Perihelion 274.831 Gm (1.837 AU)
Semi-major axis 343.587 Gm (2.297 AU)
Eccentricity 0.200
Orbital period 1271.350 d (3.48 a)
Average orbital speed 19.46 km/s
Mean anomaly 262.909°
Inclination 8.664°
Longitude of ascending node 218.819°
Argument of perihelion 139.111°
Physical characteristics
Dimensions 78.4 km
Mass 5.0×1017 kg
Equatorial surface gravity 0.0219 m/s²
Escape velocity 0.0414 km/s
Rotation period ? d
Albedo 0.185 [2]
Temperature ~184 K
Spectral type S
Absolute magnitude (H) 7.98

80 Sappho (/ˈsæf/ SAF-oh) is a large main-belt asteroid. It was discovered by Norman Pogson on May 2, 1864, and is named after Sappho, the Greek poet.

13-cm radar observations of this asteroid from the Arecibo Observatory between 1980 and 1985 were used to produce a diameter estimate of 83 km.[3]

References[edit]

  1. ^ Yeomans, Donald K., "80 Sappho", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30. 
  2. ^ Asteroid Data Sets
  3. ^ Ostro, S. J. et al. (August 1985), "Mainbelt asteroids - Dual-polarization radar observations", Science 229: 442–446, Bibcode:1985Sci...229..442O, doi:10.1126/science.229.4712.442.