208 Lacrimosa
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| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | October 21, 1879 |
| Designations | |
| Named after | Our Lady of Sorrows |
| Minor planet category | Main belt (Koronis) |
| Orbital characteristics[1] | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 439.562 Gm (2.938 AU) |
| Perihelion | 426.461 Gm (2.851 AU) |
| Semi-major axis | 433.011 Gm (2.895 AU) |
| Eccentricity | 0.015 |
| Orbital period | 1798.669 d (4.92 a) |
| Average orbital speed | 17.51 km/s |
| Mean anomaly | 67.199° |
| Inclination | 1.751° |
| Longitude of ascending node | 4.593° |
| Argument of perihelion | 129.383° |
| Physical characteristics | |
| Dimensions | 41.0 km |
| Rotation period | 14.085 h |
| Albedo | 0.27 |
| Spectral type | S |
| Absolute magnitude (H) | 8.96 |
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208 Lacrimosa is a main-belt asteroid that was discovered by Austrian astronomer Johann Palisa on October 21, 1879, in Pola. The name derives from Our Lady of Sorrows, a title given to Mary, the mother of Jesus.
10µ radiometric data collected from Kitt Peak in 1975 gave a diameter estimate of 42 km for this asteroid.[2] It is classified as an S-type asteroid and is one of the largest members of the Koronis asteroid family.[3] Hence it is probably a piece of the original asteroid that was shattered in an ancient impact that created the family.
References
- ↑ Yeomans, Donald K., "208 Lacrimosa", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- ↑ Morrison, D.; Chapman, C. R. (March 1976), "Radiometric diameters for an additional 22 asteroids", Astrophysical Journal 204: 934–939, Bibcode:2008mgm..conf.2594S, doi:10.1142/9789812834300_0469.
- ↑ Moore, Patrick; Rees, Robin, eds. (2011), Patrick Moore's Data Book of Astronomy (2nd ed.), Cambridge University Press, pp. 164–165.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- It is visible at http://www.sky-map.org/ with RA/DEC = 01:12:54 +07:41:56.
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