342 Endymion

Endymion (minor planet designation: 342 Endymion) is a large Main belt asteroid.[2] It was discovered by Max Wolf on 17 October 1892 in Heidelberg. It was the first asteroid to receive the name of a male god.[3]

342 Endymion

Discovery
Discovered by	Max Wolf
Discovery date	17 October 1892
Designations
MPC designation	(342) Endymion
Pronunciation	/ɛnˈdɪmiən/[1]
Named after	Endymion
Alternative designations	1892 K
Minor planet category	Main belt König · Bower
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	115.38 yr (42141 d)
Aphelion	2.89687 AU (433.366 Gm)
Perihelion	2.24079 AU (335.217 Gm)
Semi-major axis	2.56883 AU (384.291 Gm)
Eccentricity	0.12770
Orbital period	4.12 yr (1503.8 d)
Mean anomaly	335.858°
Mean motion	0° 14^m 21.793^s / day
Inclination	7.34850°
Longitude of ascending node	232.690°
Argument of perihelion	224.708°
Physical characteristics
Dimensions	60.63±2.8 km
Rotation period	6.319 h (0.2633 d)
Geometric albedo	0.0393±0.004
Absolute magnitude (H)	10.22

References

1. "Endymion". Merriam-Webster Dictionary.
2. "342 Endymion (1892 K)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
3. Lutz D. Schmadel, Dictionary of minor planet names (6th Edition), p. 42. Springer Verlag, Berlin/Heidelberg 2012, ISBN 3-642-29717-X

External links

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