442 Eichsfeldia

442 Eichsfeldia
Discovery
Discovered by	M. Wolf; A. Schwassmann
Discovery site	Heidelberg Obs.
Discovery date	15 February 1899
Designations
MPC designation	(442) Eichsfeldia
Pronunciation	/aɪksˈfɛldiə/
Named after	Eichsfeld
Alternative designations	1899 EE; A892 FA
Minor planet category	main-belt
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	123.78 yr (45211 d)
Aphelion	2.5112 AU (375.67 Gm)
Perihelion	2.1796 AU (326.06 Gm)
Semi-major axis	2.3454 AU (350.87 Gm)
Eccentricity	0.070707
Orbital period (sidereal)	3.59 yr (1312.0 d)
Mean anomaly	185.97°
Mean motion	0° 16m 27.84s / day
Inclination	6.0689°
Longitude of ascending node	134.93°
Argument of perihelion	85.047°
Earth MOID	1.18144 AU (176.741 Gm)
Jupiter MOID	2.47041 AU (369.568 Gm)
TJupiter	3.550
Physical characteristics
Dimensions	66.73±1.4 km; 65.58±1.70 km
Mass	1.95±0.20 × 1017 kg
Mean density	1.32±0.16 g/cm3
Synodic rotation period	11.871 h (0.4946 d)
Geometric albedo	0.0386±0.002
Spectral type	BV = 0.692 mag; UB = 0.331 mag; tholen = C; SMASSII = Ch
Absolute magnitude (H)	10.03 mag; 9.94 mag

442 Eichsfeldia is a large main belt asteroid that was discovered by German astronomers Max Wolf and A. Schwassmann on 15 February 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

^ ^a ^b ^c "JPL Small-Body Database Browser: 442 Eichsfeldia (1899 EE)" (2015-09-27 last obs.). Jet Propulsion Laboratory. Retrieved 10 May 2016.
^ ^a ^b ^c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
^ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.

External links

Lightcurve plot of (442) Eichsfeldia, Antelope Hills Observatory
442 Eichsfeldia at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
442 Eichsfeldia at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it.

[jpldata-1] "JPL Small-Body Database Browser: 442 Eichsfeldia (1899 EE)" (2015-09-27 last obs.). Jet Propulsion Laboratory. Retrieved 10 May 2016.

[Carry2012-2] Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.

[Warner2007-3] Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.

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