287 Nephthys

287 Nephthys

Discovery
Discovered by	C. H. F. Peters
Discovery date	August 25, 1889
Designations
Named after	Nephthys
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	360.26 Gm (2.408 AU)
Perihelion	343.744 Gm (2.298 AU)
Semi-major axis	352.002 Gm (2.353 AU)
Eccentricity	0.023
Orbital period	1318.315 d (3.61 a)
Average orbital speed	19.42 km/s
Mean anomaly	59.725°
Inclination	10.023°
Longitude of ascending node	142.493°
Argument of perihelion	120.15°
Physical characteristics
Dimensions	68.0 km
Spectral type	S
Absolute magnitude (H)	8.26[2]

287 Nephthys is a large Main belt asteroid that was discovered by German-American astronomer C. H. F. Peters on August 25, 1889 in Clinton, New York and named after Nephthys in Egyptian mythology.^[3] It is classified as an S-type asteroid.

References

1. Yeomans, Donald K., "287 Nephthys", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25.
2. Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
3. Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names, Springer, p. 38, ISBN 3642297188.

External links

• 287 Nephthys at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters