630 Euphemia

From Wikipedia, the free encyclopedia
Jump to: navigation, search
630 Euphemia
Discovery
Discovered by August Kopff
Discovery date March 7, 1907
Designations
Named after
Euphemia
1907 XW; A924 DC
Main belt (Eunomia family)
Orbital characteristics
Epoch August 18, 2005 (JD 2453600.5)
Aphelion 437.1 Gm (2.922 AU)
Perihelion 348.0 Gm (2.326 AU)
392.5 Gm (2.624 AU)
Eccentricity 0.114
1552.5 d (4.76 a)
18.33 km/s
65.452°
Inclination 13.844°
105.571°
40.580°
Physical characteristics
Dimensions 17 km[1]
Mass ~7×1015 kg (estimate)
Mean density
~2.7 g/cm³ (estimate)[2]
~0.006 m/s² (estimate)
~0.011 km/s (estimate)
unknown
Albedo 0.238
Temperature ~165 K
max: 248K (-26° C)
Spectral type
S-type asteroid
11.00

630 Euphemia is a mid-sized Eunomian asteroid.

Photometric observations at the Palmer Divide Observatory during 2005 showed a best fit rotation period of 79.18 ± 0.02 hours with a brightness variation of 0.2 ± 0.02 in magnitude. However, some uncertainty remains concerning the reliability of this result.[1]

References[edit]

  1. ^ Warner, Brian D. (December 2005), "Asteroid lightcurve analysis at the Palmer Divide Observatory - spring 2005", The Minor Planet Bulletin 32 (4): 90–92, Bibcode:2005MPBu...32...90W. 
  1. G. A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).

External links[edit]