137 Meliboea
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Discovery
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| Discovered by | Johann Palisa |
| Discovery date | April 21, 1874 |
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Designations
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| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 569.016 Gm (3.804 AU) |
| Perihelion | 364.057 Gm (2.434 AU) |
| Semi-major axis | 466.536 Gm (3.119 AU) |
| Eccentricity | 0.220 |
| Orbital period | 2011.587 d (5.51 a) |
| Average orbital speed | 16.66 km/s |
| Mean anomaly | 314.941° |
| Inclination | 13.418° |
| Longitude of ascending node | 202.446° |
| Argument of perihelion | 106.741° |
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Physical characteristics
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| Dimensions | 145.4 km |
| Mass | 3.2×1018 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0406 m/s² |
| Escape velocity | 0.0769 km/s |
| Rotation period | ? d |
| Albedo | ? |
| Temperature | ~158 K |
| Spectral type | C |
| Absolute magnitude | 8.05 |
137 Meliboea is a large and very dark main belt asteroid. It is composed of carbonaceous materials. It is the largest body in the Meliboea family of asteroids. Only 791 Ani approaches its size. It was discovered by J. Palisa on April 21, 1874, the second of his many asteroid discoveries. It is named after one of the three Meliboeas in Greek mythology.
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