22 Kalliope
Main-belt asteroid / From Wikipedia, the free encyclopedia
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Kalliope (/kəˈlaɪ.əpi/ kə-LY-ə-pee; minor planet designation: 22 Kalliope) is a large M-type asteroid from the asteroid belt discovered by J. R. Hind on 16 November 1852. It is named after Calliope, the Greek Muse of epic poetry. It is orbited by a small moon named Linus.
Quick Facts Discovery, Discovered by ...
Discovery | |
---|---|
Discovered by | John Russell Hind |
Discovery date | 16 November 1852 |
Designations | |
(22) Kalliope | |
Pronunciation | /kəˈlaɪ.əpi/ kə-LY-ə-pee[1] |
Named after | Καλλιόπη Kalliopē |
Main belt | |
Adjectives | Kalliopean /kəˌlaɪ.əˈpiːən/ kə-LY-ə-PEE-ən |
Orbital characteristics[2] | |
Epoch 23 July 2010 (JD 2455400.5) | |
Aphelion | 479.98 Gm (3.2085 AU) |
Perihelion | 391.03 Gm (2.6139 AU) |
435.09 Gm (2.9112 AU) | |
Eccentricity | 0.10213 |
1814.3 d (4.97 yr) | |
282.54° | |
Inclination | 13.703° |
66.17° | |
355.03° | |
Known satellites | Linus |
Physical characteristics | |
Dimensions | 235 km × 144 km × 124 km[3] 190 km × 125 km[4] |
Mean diameter | |
Flattening | 0.41[lower-alpha 1] |
Mass | (7.7±0.4)×1018 kg[5] (8.16±0.26)×1018 kg[3] 7.36×1018 kg[6] (6.30±0.50)×1018 kg[7] |
Mean density | |
0.17285 days (4.1483 h)[2] | |
0.198[5] 0.17[3] 0.166 ± 0.005[2] | |
6.81[2] | |
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