Discovery | |
---|---|
Discovered by | Johann Palisa |
Discovery date | 4 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 | |
Dimensions | 5 - 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]