442 Eichsfeldia

442 Eichsfeldia

Discovery [1]
Discovered by	M. Wolf A. Schwassmann
Discovery site	Heidelberg Obs.
Discovery date	15 February 1899
Designations
MPC designation	442 Eichsfeldia
Named after	Eichsfeld
Alternative names	1899 EE; A892 FA
Minor planet category	main-belt
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc	123.52 yr (45,116 days)
Aphelion	2.5110 AU
Perihelion	2.1801 AU
Semi-major axis	2.3455 AU
Eccentricity	0.0705
Orbital period	3.59 yr (1312.1 days)
Mean anomaly	76.289°
Inclination	6.0691°
Longitude of ascending node	134.93°
Argument of perihelion	84.988°
Earth MOID	1.1824 AU
Physical characteristics
Dimensions	66.73±1.40 km 65.58±1.70 km[2]
Mass	1.95±0.20) × 10^17 kg[2]
Mean density	1.32±0.16 g/cm^3[2]
Rotation period	11.871 h
Geometric albedo	0.0386
Spectral type	BV = 0.692 mag UB = 0.331 mag tholen = C SMASSII = Ch
Absolute magnitude (H)	10.03 mag 9.94 mag[3]

442 Eichsfeldia is a large main belt asteroid that was discovered by German astronomers Max Wolf and A. Schwassmann on February 15, 1899 in Heidelberg. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material.

Although Eichsfeldia has an orbit similar to the Vesta family asteroids, it was found to be an unrelated interloper on the basis of its non-matching spectral type.

References

1. "JPL Small-Body Database Browser: 442 Eichsfeldia (1899 EE)" (2015-09-27 last obs.). Jet Propulsion Laboratory. Retrieved October 2015.
2. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
3. 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.

External links

• 442 Eichsfeldia at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters