315 Constantia

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315 Constantia
000315-asteroid shape model (315) Constantia.png
Shape model of Constantia from its lightcurve
Discovery
Discovered by Johann Palisa
Discovery date4 September 1891
Designations
(315) Constantia
Pronunciation /kənˈstænʃ(i)ə/ [1]
Named after
constancy (virtue)
main-belt
Orbital characteristics [2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 87.27 yr (31874 d)
Aphelion 2.61963  AU (391.891  Gm)
Perihelion 1.86231 AU (278.598 Gm)
2.24097 AU (335.244 Gm)
Eccentricity 0.16897
3.35 yr (1225.3 d)
Average orbital speed
19.9 km/s
86.6748°
0° 17m 37.673s / day
Inclination 2.42916°
161.661°
172.807°
Physical characteristics
Dimensions5 - 12 km
5.345  h (0.2227  d)
12.5

    Constantia (minor planet designation: 315 Constantia) is a stony background asteroid from the inner region of the asteroid belt, [3] approximately 6.5 kilometers (4 miles) in diameter. [2] It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 4 September 1891. The asteroid is a member of the Flora family. It is spinning with a rotation period of 5.345±0.003 h and shows a brightness variation of 0.57±0.2 in magnitude. [3]

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    References

    1. "Constantia" . Oxford English Dictionary (Online ed.). Oxford University Press.(Subscription or participating institution membership required.)
    2. 1 2 "315 Constantia". JPL Small-Body Database . NASA/Jet Propulsion Laboratory . Retrieved 11 May 2016.
    3. 1 2 Cikota, S.; et al. (February 2014), "A photometric search for active Main Belt asteroids", Astronomy & Astrophysics, 562: 8, arXiv: 1401.5527 , Bibcode:2014A&A...562A..94C, doi:10.1051/0004-6361/201321679, A94.