169 Zelia
Discovery | |
---|---|
Discovered by | P. M. Henry, 1876 |
Discovery date | 28 September 1876 |
Designations | |
Main belt | |
Orbital characteristics[1] | |
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) |
2.3586 AU (352.84 Gm) | |
Eccentricity | 0.13040 |
3.62 yr (1323.1 d) | |
249.62° | |
0° 16m 19.524s / day | |
Inclination | 5.5001° |
354.77° | |
334.90° | |
Earth MOID | 1.04119 AU (155.760 Gm) |
Jupiter MOID | 2.65309 AU (396.897 Gm) |
Jupiter Tisserand parameter | 3.535 |
Physical characteristics | |
Mean radius |
±1.3 16.80km[1] 19.3 ± 0.45 km[2] |
14.537 h (0.6057 d) | |
0.178 ± 0.035[2] ±0.041 0.2347[1] | |
O (Bus & Binzel)[2] | |
9.56 | |
|
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. It is named after a niece of the astronomer Camille Flammarion.[3] Initial orbital elements for this asteroid were published in 1877 by American astronomer H. A. Howe.[4]
Based upon its spectrum, this body is classified as a rare O-type asteroid in the taxonomic system of Bus & Binzel.[2] 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.[5]
References
- 1 2 3 Yeomans, Donald K., "169 Zelia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016.
- 1 2 3 4 Mainzer, A.; et al. (January 2012), "NEOWISE Studies of Asteroids with Sloan Photometry: Preliminary Results", The Astrophysical Journal, 745 (1), pp. 1–20, arXiv:1110.4998, Bibcode:2012ApJ...745....7M, doi:10.1088/0004-637X/745/1/7.
- ↑ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 28, ISBN 3642297188.
- ↑ Howe, H. A. (May 1877), "Elements of (169) Zelia", Astronomische Nachrichten, 89, p. 279, Bibcode:1877AN.....89..279H, doi:10.1002/asna.18770891803.
- ↑ Stephens, Robert D.; Pilcher, Frederick (October 2009), "Photometric Observations of 169 Zelia", The Minor Planet Bulletin, 36 (4), p. 161, Bibcode:2009MPBu...36..161S.
External links
- 169 Zelia at the JPL Small-Body Database
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