75 Eurydike

75 Eurydike
Discovery
Discovered by	Christian Heinrich Friedrich Peters
Discovery date	September 22, 1862
Designations
MPC designation	(75) Eurydike
Pronunciation	/jʊˈrɪdɪkiː/
Named after	Eurydice
Minor planet category	Main belt
Adjectives	Eurydikean /ˌjʊərɪdɪˈkiːən/
Orbital characteristics
	Epoch December 31, 2006 (JD 2454100.5)
Aphelion	521.874 Gm (3.489 AU)
Perihelion	278.028 Gm (1.858 AU)
Semi-major axis	399.951 Gm (2.674 AU)
Eccentricity	0.305
Orbital period (sidereal)	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°
Argument of perihelion	339.566°
Physical characteristics
Dimensions	55.7 km
Mass	1.8×1017 kg
Synodic rotation period	5.357 h
Geometric albedo	0.149
Spectral type	M
Absolute magnitude (H)	8.96

Eurydike (minor planet designation: 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.^[3] 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 with 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
^ Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine
^ ^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.

External links[]

75 Eurydike at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
75 Eurydike at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[1] 'Eurydice' in Noah Webster (1884) A Practical Dictionary of the English Language

[2] Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine

[Busarev1998-3] 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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