386 Siegena
Siegena (minor planet designation: 386 Siegena) is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material.
Discovery | |
---|---|
Discovered by | Max Wolf |
Discovery date | 1 March 1894 |
Designations | |
(386) Siegena | |
Pronunciation | /ˈsiːɡənə/ SEE-gə-nə[1] |
Named after | Siegen |
1894 AY | |
Main belt | |
Adjectives | Siegenian /siːˈɡɛniən/ see-GHEN-ee-ən[2] |
Orbital characteristics[3] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 122.08 yr (44590 d) |
Aphelion | 3.38983 AU (507.111 Gm) |
Perihelion | 2.40159 AU (359.273 Gm) |
2.89571 AU (433.192 Gm) | |
Eccentricity | 0.17064 |
4.93 yr (1799.8 d) | |
66.7510° | |
0° 12m 0.068s / day | |
Inclination | 20.2568° |
166.886° | |
219.478° | |
Physical characteristics | |
Dimensions | 165.01±2.7 km[3] 170.35 ± 8.40 km[4] |
Mass | (8.14 ± 1.58) × 1018 kg[4] |
Mean density | 3.14 ± 0.76 g/cm3[4] |
9.763 h (0.4068 d) | |
0.0692±0.002 | |
C | |
7.43 | |
It was discovered by Max Wolf on March 1, 1894, in Heidelberg.
During 1999, the asteroid was observed occulting a star. The resulting chords provided a diameter estimate of 174 km.[5]
References
- per "siegenite". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- "Siegenian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- "386 Siegena (1894 AY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
- Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- Shevchenko, Vasilij G.; Tedesco, Edward F. (September 2006), "Asteroid albedos deduced from stellar occultations", Icarus, 184 (1): 211–220, Bibcode:2006Icar..184..211S, doi:10.1016/j.icarus.2006.04.006.
External links
- 386 Siegena at AstDyS-2, Asteroids—Dynamic Site
- 386 Siegena at the JPL Small-Body Database
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.