22 Kalliope

22 Kalliope
Kalliope and satellite Linus as seen by the W.M. Keck II telescope in 2010
Discovery
Discovered byJohn Russell Hind
Discovery date16 November 1852
Designations
(22) Kalliope
Pronunciation/kəˈlaɪ.əpi/ kə-LY-ə-pee[1]
Named after
Καλλιόπη Kalliopē
Main belt
AdjectivesKalliopean /kəˌlaɪ.əˈpiːən/ kə-LY-ə-PEE-ən
Orbital characteristics[2]
Epoch 23 July 2010 (JD 2455400.5)
Aphelion479.98 Gm (3.2085 AU)
Perihelion391.03 Gm (2.6139 AU)
435.09 Gm (2.9112 AU)
Eccentricity0.10213
1814.3 d (4.97 yr)
282.54°
Inclination13.703°
66.17°
355.03°
Known satellitesLinus
Physical characteristics
Dimensions235 km × 144 km × 124 km[3]
190 km × 125 km[4]
Flattening0.41[a]
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
  • 4.36±0.50 g/cm3[5]
  • 3.35±0.33 g/cm3[3]
  • 2.37±0.40 g/cm3[6]
  • 2.03±0.16 g/cm3[7]
0.17285 days (4.1483 h)[2]
0.198[5]
0.17[3]
0.166 ± 0.005[2]
6.81[2]

22 Kalliope (/kəˈlaɪ.əpi/; kə-LY-ə-pee) 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.

  1. ^ "calliope". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  2. ^ a b c d e f g "JPL Small-Body Database Browser: 22 Kalliope" (2010-06-02 last obs). Retrieved 22 July 2010.
  3. ^ a b c d e Cite error: The named reference Descamps2008 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Soma06 was invoked but never defined (see the help page).
  5. ^ a b c d e Vernazza, P.; et al. (October 2021). "VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis". Astronomy & Astrophysics. 654: A56. Bibcode:2021A&A...654A..56V. doi:10.1051/0004-6361/202141781. hdl:10261/263281. S2CID 239104699.
  6. ^ a b c Cite error: The named reference Margot03 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Marchis03 was invoked but never defined (see the help page).
  8. ^ "EAR-A-5-DDR-TAXONOMY-V6.0". Planetary Data System. Archived from the original on 17 December 2015. Retrieved 16 April 2018.


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