Astronomy:315 Constantia

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Short description: Main-belt asteroid
315 Constantia
000315-asteroid shape model (315) Constantia.png
Shape model of Constantia from its lightcurve
Discovery
Discovered byJohann Palisa
Discovery date4 September 1891
Designations
(315) Constantia
Pronunciation/kənˈstænʃ(i)ə/[1]
Named afterconstancy (virtue)
Minor planet categorymain-belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc87.27 yr (31874 d)
|{{{apsis}}}|helion}}2.61963 astronomical unit|AU (391.891 Gm)
|{{{apsis}}}|helion}}1.86231 AU (278.598 Gm)
2.24097 AU (335.244 Gm)
Eccentricity0.16897
Orbital period3.35 yr (1225.3 d)
Average Orbital speed19.9 km/s
Mean anomaly86.6748°
Mean motion0° 17m 37.673s / day
Inclination2.42916°
Longitude of ascending node161.661°
172.807°
Physical characteristics
Dimensions5 - 12 km
Rotation period5.345 h (0.2227 d)
Absolute magnitude (H)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]

References

  1. Constantia (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Constantia  (Subscription or UK public library membership required.)
  2. 2.0 2.1 "315 Constantia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=315. 
  3. 3.0 3.1 Cikota, S. et al. (February 2014), "A photometric search for active Main Belt asteroids", Astronomy & Astrophysics 562: 8, doi:10.1051/0004-6361/201321679, A94, Bibcode2014A&A...562A..94C. 

External links