442 Eichsfeldia

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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
1899 EE; A892 FA
main-belt
Orbital characteristics[1]
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)
2.3454 AU (350.87 Gm)
Eccentricity 0.070707
3.59 yr (1312.0 d)
185.97°
0° 16m 27.84s / day
Inclination 6.0689°
134.93°
85.047°
Earth MOID 1.18144 AU (176.741 Gm)
Jupiter MOID 2.47041 AU (369.568 Gm)
Jupiter Tisserand parameter 3.550
Physical characteristics
Dimensions 66.73±1.4 km[1]
65.58±1.70 km[2]
Mass 1.95±0.20 × 1017 kg[2]
Mean density
1.32±0.16 g/cm3[2]
11.871 h (0.4946 d)
0.0386±0.002
BV = 0.692 mag
UB = 0.331 mag
tholen = C
SMASSII = Ch
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[edit]

  1. ^ a b c "JPL Small-Body Database Browser: 442 Eichsfeldia (1899 EE)" (2015-09-27 last obs.). Jet Propulsion Laboratory. Retrieved 10 May 2016. 
  2. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336Freely accessible, 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[edit]