538 Friederike

From Wikipedia, the free encyclopedia
Jump to: navigation, search
538 Friederike
Discovery
Discovered by Paul Götz
Discovery date July 18, 1904
Designations
1904 OK
Main belt (Hygiea family)
Orbital characteristics
Epoch 18 August 2005 (JD 2453600.5)
Aphelion 550.5 Gm (3.680 AU)
Perihelion 396.0 Gm (2.647 AU)
473.3 Gm (3.164 AU)
Eccentricity 0.163
2055 d (5.63 a)
16.64 km/s
293.642°
Inclination 6.503°
141.364°
228.385°
Physical characteristics
Dimensions 72 km[1]
Mass ~2.8×1017 kg (estimate)
Mean density
~1.4 g/cm³ (estimate)[3]
~0.014 m/s² (estimate)
~0.032 km/s (estimate)
1.1 d [2]
Albedo 0.0641 [1]
Temperature ~158 K
max: 244K (-29° C)
Spectral type
B-type asteroid[4]
9.30

538 Friederike is a minor planet orbiting the Sun.

References[edit]

  1. PDS lightcurve data
  2. G. A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).
  3. T. Mothé-Diniz et al. Rotationally Resolved Spectra of 10 Hygiea and a Spectroscopic Study of the Hygiea Family, Icarus, Vol. 152, p. 117 (2001).