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Discovery
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|---|---|
| Discovered by | Alphonse Borrelly |
| Discovery date | April 19, 1870 |
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Designations
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| Named after | Lydia |
| Alternate name(s) | |
| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 440.756 Gm (2.946 AU) |
| Perihelion | 377.016 Gm (2.520 AU) |
| Semi-major axis | 408.886 Gm (2.733 AU) |
| Eccentricity | 0.078 |
| Orbital period | 1650.493 d (4.52 a) |
| Average orbital speed | 17.99 km/s |
| Mean anomaly | 306.394° |
| Inclination | 5.974° |
| Longitude of ascending node | 56.993° |
| Argument of perihelion | 281.953° |
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Physical characteristics
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| Dimensions | 86.1 km |
| Mass | 6.7×1017 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0241 m/s² |
| Escape velocity | 0.0455 km/s |
| Rotation period | 10.927 hours |
| Albedo | 0.181 |
| Temperature | ~168 K |
| Spectral type | M |
| Absolute magnitude (H) | 7.80 |
110 Lydia is a quite large main-belt asteroid with an M-type spectrum, which may contain nickel-iron. The asteriod has a fairly circular orbit around the sun. The Lydia asteroid family is named after it. It was discovered by A. Borrelly on April 19, 1870. It was named for the Asia Minor country populated by Phrygians.[1]
In the late 1990s, a network of astronomers worldwide used lightcurves to derive spin states and shape models of 10 new asteroids, including (110) Lydia.[2][3]
Lydia occulted a dim star on September 18, 1999.
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