Discovery | |
---|---|
Discovered by | Robert Luther |
Discovery site | Düsseldorf-Bilk Obs. |
Discovery date | 20 February 1890 |
Designations | |
(288) Glauke | |
Pronunciation | /ˈɡlɔːkiː/ [1] |
Named after |
Creusa (a.k.a. Glauce or Glauke) |
A890 DA, 1955 MO 1959 GB, 1961 WF | |
Main belt | |
Orbital characteristics [2] | |
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) | |
176.219 ° | |
0° 12m 53.172s / day | |
Inclination | 4.33517° |
120.135° | |
84.8286° | |
Physical characteristics | |
Dimensions | 32.21±2.2 km ( IRAS) [2] |
1,170 h (49 d) [2] | |
0.1973±0.029< [2] | |
S [2] | |
9.84 [2] | |
Glauke ( minor planet designation: 288 Glauke) 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. [3]
Glauke has an exceptionally slow rotation period of about 1200 hours (50 days). [4] 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. [2]