169 Zelia
Zelia (minor planet designation: 169 Zelia) is a main belt asteroid that was discovered by the brothers Paul Henry and Prosper Henry on September 28, 1876. Credit for this discovery was given to Prosper. Initial orbital elements for this asteroid were published in 1877 by American astronomer H. A. Howe.
Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | P. M. Henry, 1876 |
| Discovery date | 28 September 1876 |
| Designations | |
MPC designation | (169) Zelia |
Named after | Zelia Martin |
Alternative designations | A876 SB; 1933 FC2 |
Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 131.26 yr (47944 d) |
| Aphelion | 2.6662 AU (398.86 Gm) |
| Perihelion | 2.0511 AU (306.84 Gm) |
Semi-major axis | 2.3586 AU (352.84 Gm) |
| Eccentricity | 0.13040 |
Orbital period (sidereal) | 3.62 yr (1323.1 d) |
Mean anomaly | 249.62° |
Mean motion | 0° 16m 19.524s / day |
| Inclination | 5.5001° |
Longitude of ascending node | 354.77° |
| 334.90° | |
| Earth MOID | 1.04119 AU (155.760 Gm) |
| Jupiter MOID | 2.65309 AU (396.897 Gm) |
| TJupiter | 3.535 |
| Physical characteristics | |
Mean radius | 16.80±1.3 km 19.3 ± 0.45 km |
Synodic rotation period | 14.537 h (0.6057 d) |
| 0.178 ± 0.035 0.2347±0.041 | |
| O (Bus & Binzel) | |
| 9.56 | |
Based upon its spectrum, this body is classified as a rare O-type asteroid in the taxonomic system of Bus & Binzel. Photometric observations of this asteroid during 2009 gave a light curve with a period of 14.537 ± 0.001 hours and a brightness variation of 0.14 ± 0.03 in magnitude.
It was named for Zelia Martin, a niece of the astronomer Camille Flammarion.
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