Astronomy:75 Eurydike
From HandWiki
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | September 22, 1862 |
| Designations | |
| (75) Eurydike | |
| Pronunciation | /jʊˈrɪdɪkiː/[1] |
| Named after | Eurydice |
| Minor planet category | Main belt |
| Adjectives | Eurydikean /ˌjʊərɪdɪˈkiːən/ |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| |{{{apsis}}}|helion}} | 521.874 Gm (3.489 AU) |
| |{{{apsis}}}|helion}} | 278.028 Gm (1.858 AU) |
| 399.951 Gm (2.674 AU) | |
| Eccentricity | 0.305 |
| Orbital period | 1596.687 d (4.37 a) |
| Average Orbital speed | 17.79 km/s |
| Mean anomaly | 26.318° |
| Inclination | 5.002° |
| Longitude of ascending node | 359.481° |
| 339.566° | |
| Physical characteristics | |
| Dimensions | 62.377 ± 1.603 km[2] |
| Mass | (4.46 ± 2.06/1.06)×1017 kg[3] |
| Mean density | 3.511 ± 1.618/0.837 g/cm3[3] |
| Rotation period | 5.357 h[2] |
| Geometric albedo | 0.149[4] |
| M[5] | |
| Absolute magnitude (H) | 9.29[2] |
75 Eurydike is a large main-belt asteroid. It has an M-type spectrum and a relatively high albedo and may be rich in nickel-iron.[5] Eurydike was discovered by German-American astronomer C. H. F. Peters on September 22, 1862. It was second of his numerous asteroid discoveries and is named after Eurydice, the wife of Orpheus. The asteroid is orbiting the Sun for a period of 4.37 years and completes a rotation about its axis every 5.4 hours.
References
- ↑ 'Eurydice' in Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 2.2 "75 Eurydike". JPL Small-Body Database. Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=20000075.
- ↑ 3.0 3.1 Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society 492 (1): 589–602. doi:10.1093/mnras/stz3407. https://academic.oup.com/mnras/article/492/1/589/5658701.
- ↑ Asteroid Data Sets
- ↑ 5.0 5.1 Busarev, V. V. (January 1998). "Spectral Features of M-Asteroids: 75 Eurydike and 201 Penelope". Icarus 131 (1): 32–40. doi:10.1006/icar.1997.5847. Bibcode: 1998Icar..131...32B.
External links
- 75 Eurydike at AstDyS-2, Asteroids—Dynamic Site
- 75 Eurydike at the JPL Small-Body Database
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