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75 Eurydike

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75 Eurydike
Orbital diagram
Discovery
Discovered byChristian Heinrich Friedrich Peters
Discovery dateSeptember 22, 1862
Designations
(75) Eurydike
Pronunciation/jʊˈrɪdɪk/[1]
Named after
Eurydice
Main belt
AdjectivesEurydikean /ˌjʊərɪdɪˈkən/
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion521.874 Gm (3.489 AU)
Perihelion278.028 Gm (1.858 AU)
399.951 Gm (2.674 AU)
Eccentricity0.305
1596.687 d (4.37 a)
17.79 km/s
26.318°
Inclination5.002°
359.481°
339.566°
Physical characteristics
Dimensions62.377 ± 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]
5.357 h[2]
0.149[4]
M[5]
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

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  1. ^ 'Eurydice' in Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b c "75 Eurydike". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 20000075. Retrieved 29 March 2024.
  3. ^ a b 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.
  4. ^ Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine
  5. ^ a b Busarev, V. V. (January 1998). "Spectral Features of M-Asteroids: 75 Eurydike and 201 Penelope". Icarus. 131 (1): 32–40. Bibcode:1998Icar..131...32B. doi:10.1006/icar.1997.5847.
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