.png) A three-dimensional model of 386 Siegena based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery date | 1 March 1894 |
| Designations | |
| MPC designation | (386) Siegena |
| Pronunciation | /ˈsiːɡənə/ SEE-gə-nə |
| Named after | Siegen |
| Alternative designations | 1894 AY |
| Minor planet category | Main belt |
| Adjectives | Siegenian /siːˈɡɛniən/ see-GHEN-ee-ən |
| Orbital characteristics | |
| 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) |
| Semi-major axis | 2.89571 AU (433.192 Gm) |
| Eccentricity | 0.17064 |
| Orbital period (sidereal) | 4.93 yr (1799.8 d) |
| Mean anomaly | 66.7510° |
| Mean motion | 0° 12 0.068 / day |
| Inclination | 20.2568° |
| Longitude of ascending node | 166.886° |
| Argument of perihelion | 219.478° |
| Physical characteristics | |
| Dimensions | 165.01±2.7 km 170.35 ± 8.40 km |
| Mass | (8.14 ± 1.58) × 10 kg |
| Mean density | 3.14 ± 0.76 g/cm |
| Synodic rotation period | 9.763 h (0.4068 d) |
| Geometric albedo | 0.0692±0.002 |
| Spectral type | C |
| Absolute magnitude (H) | 7.43 |
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.
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.
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
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