169 Zelia

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169 Zelia
Discovery
Discovered by P. M. Henry, 1876
Discovery date 28 September 1876
Designations
MPC designation (169) Zelia
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
16.80±1.3 km[1]
19.3 ± 0.45 km[2]
14.537 h (0.6057 d)
0.178 ± 0.035[2]
0.2347±0.041[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[edit]

  1. ^ a b c Yeomans, Donald K., "169 Zelia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016. 
  2. ^ a b c d Mainzer, A.; et al. (January 2012), "NEOWISE Studies of Asteroids with Sloan Photometry: Preliminary Results", The Astrophysical Journal, 745 (1), pp. 1–20, Bibcode:2012ApJ...745....7M, arXiv:1110.4998Freely accessible, doi:10.1088/0004-637X/745/1/7. 
  3. ^ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 28, ISBN 3642297188. 
  4. ^ Howe, H. A. (May 1877), "Elements of (169) Zelia", Astronomische Nachrichten, 89, p. 279, Bibcode:1877AN.....89..279H, doi:10.1002/asna.18770891803. 
  5. ^ 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[edit]