Astronomy:169 Zelia
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Short description: Main-belt asteroid
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | P. M. Henry, 1876 |
| Discovery date | 28 September 1876 |
| Designations | |
| (169) Zelia | |
| Named after | Zelia Martin |
| A876 SB; 1933 FC2 | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 131.26 yr (47944 d) |
| |{{{apsis}}}|helion}} | 2.6662 astronomical unit|AU (398.86 Gm) |
| |{{{apsis}}}|helion}} | 2.0511 AU (306.84 Gm) |
| 2.3586 AU (352.84 Gm) | |
| Eccentricity | 0.13040 |
| Orbital period | 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[1] 19.3 ± 0.45 km[2] |
| Rotation period | 14.537 h (0.6057 d) |
| Geometric albedo | 0.178 ± 0.035[2] 0.2347±0.041[1] |
| O (Bus & Binzel)[2] | |
| Absolute magnitude (H) | 9.56 |
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.[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]
It was named for Zelia Martin, a niece of the astronomer Camille Flammarion.[6]
References
- ↑ 1.0 1.1 1.2 Yeomans, Donald K., "169 Zelia", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=169, retrieved 6 May 2016.
- ↑ 2.0 2.1 2.2 2.3 Mainzer, A. et al. (January 2012), "NEOWISE Studies of Asteroids with Sloan Photometry: Preliminary Results", The Astrophysical Journal 745 (1): 7, doi:10.1088/0004-637X/745/1/7, Bibcode: 2012ApJ...745....7M.
- ↑ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 28, ISBN 978-3642297182, https://books.google.com/books?id=aeAg1X7afOoC&pg=PA28.
- ↑ Howe, H. A. (May 1877), "Elements of (169) Zelia", Astronomische Nachrichten 89 (18): 279, doi:10.1002/asna.18770891803, Bibcode: 1877AN.....89..279H, https://zenodo.org/record/1424699.
- ↑ Stephens, Robert D.; Pilcher, Frederick (October 2009), "Photometric Observations of 169 Zelia", The Minor Planet Bulletin 36 (4): 161, Bibcode: 2009MPBu...36..161S.
- ↑ Schmadel, L. (2003:28). Dictionary of minor planet names. Germany: Springer.
External links
- 169 Zelia at AstDyS-2, Asteroids—Dynamic Site
- 169 Zelia at the JPL Small-Body Database
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