538 Friederike

538 Friederike
Discovery
Discovered byPaul Götz
Discovery date18 July 1904
Designations
(538) Friederike
PronunciationGerman: [fʁiːdəˈʁiːkə][1]
1904 OK
Main belt (Hygiea family)
Orbital characteristics [2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc111.70 yr (40800 d)
Aphelion3.6924 AU (552.38 Gm)
Perihelion2.6238 AU (392.51 Gm)
3.1581 AU (472.45 Gm)
Eccentricity0.16919
5.61 yr (2049.9 d)
275.237°
0° 10m 32.232s / day
Inclination6.5204°
141.173°
227.779°
Physical characteristics
36.245±1.15 km [2]
36 km[3]
Mean density
~1.4 g/cm3[4]
1.1 d [5]
46.728 h (1.9470 d) [2]
0.0641 [3]
0.0641±0.004 [2]
B-type asteroid [6]
9.5

538 Friederike is a minor planet (an asteroid specifically) orbiting in the asteroid belt. It is a member of the Hygiea family of asteroids.

Photometric observations at the Organ Mesa Observatory in New Mexico during 2012 showed a rotation period of 46.728 ± 0.004 hours with a brightness variation of 0.25 ± 0.02 in magnitude.[7]

  1. ^ (German Names)
  2. ^ a b c d "538 Friederike (1904 OK)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 8 May 2016.
  3. ^ a b Cite error: The named reference IRAS was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Krasinsky02 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference PDSLightcurve was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference MD01 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference bmps40_2_85 was invoked but never defined (see the help page).