397 Vienna
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| Discovery A | |
|---|---|
| Discoverer | Auguste Charlois |
| Discovery date | December 19, 1894 |
| Alternate designations B |
1894 BM |
| Category | Main belt |
| Orbital elements C | |
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| Eccentricity (e) | 0.246 |
| Semi-major axis (a) | 394.164 Gm (2.635 AU) |
| Perihelion (q) | 297.033 Gm (1.986 AU) |
| Aphelion (Q) | 491.295 Gm (3.284 AU) |
| Orbital period (P) | 1562.13 d (4.28 a) |
| Mean orbital speed | 18.35 km/s |
| Inclination (i) | 12.835° |
| Longitude of the ascending node (Ω) |
228.271° |
| Argument of perihelion (ω) |
139.451° |
| Mean anomaly (M) | 315.367° |
| Physical characteristics D | |
| Dimensions | 43.3±1.8 km |
| Mass | unknown |
| Density | unknown |
| Surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 15.48 h |
| Spectral class | unknown |
| Absolute magnitude | 9.31 |
| Albedo (geometric) | 0.178±0.015 |
| Mean surface temperature |
unknown |
397 Vienna is a typical Main belt asteroid. The Tholen spectral type is S and the SMASSII spectral type is K.
It was discovered by Auguste Charlois on December 19, 1894 in Nice.
[edit] References
- Yeomans, Donald K. (2007-05-02). 397 Vienna (1894 BM). JPL Small-Body Database Browser. Retrieved on 2007-05-02.</ref>
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