169 Zelia

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°
 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

    1. 1 2 3 Yeomans, Donald K., "169 Zelia", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 6 May 2016.
    2. 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.
    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


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