288 Glauke

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288 Glauke
Discovered by Robert Luther
Discovery site Düsseldorf-Bilk Obs.
Discovery date 20 February 1890
MPC designation (288) Glauke
Pronunciation /ˈɡlɔːk/ GLAW-kee
Named after
(a.k.a. Glauce or Glauke)
1955 MO · 1959 GB
1961 WF
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 124.34 yr (45416 d)
Aphelion 3.32685 AU (497.690 Gm)
Perihelion 2.19625 AU (328.554 Gm)
2.76155 AU (413.122 Gm)
Eccentricity 0.20470
4.59 yr (1676.2 d)
0° 12m 53.172s / day
Inclination 4.33517°
Physical characteristics
Dimensions 32.21±2.2 km (IRAS)[1]
1,170 h (49 d)[1]
S [1]

288 Glauke (/ˈɡlɔːk/ GLAW-kee) is a stony, tumbling asteroid and slow rotator from the intermediate asteroid belt, approximately 32 kilometers in diameter. It was discovered on 20 February 1890, by Robert Luther at Düsseldorf-Bilk Observatory in Germany. It was the last of his asteroid discoveries. It is named after Creusa (known as Glauce or Glauke), a daughter of Creon a king of Corinth in Greek mythology.


Glauke has an exceptionally slow rotation period of about 1200 hours (50 days).[2] This makes it one of the slowest-rotating asteroids in the Solar System. The rotation is believed to be "tumbling", similar to the near-Earth asteroid 4179 Toutatis.

It is a common, stony S-type asteroid in both the Tholen and SMASS classification.[1]


  1. ^ a b c d e f g "JPL Small-Body Database Browser: 288 Glauke" (2012-01-04 last obs). Jet Propulsion Laboratory. Retrieved 11 May 2016.
  2. ^ "Radar Observations of Asteroid 288 Glauke" (PDF). NASA JPL. Retrieved 12 October 2011.

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