288 Glauke
Main-belt asteroid
From Wikipedia, the free encyclopedia
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. This 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]
Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Robert Luther |
| Discovery site | Düsseldorf-Bilk Obs. |
| Discovery date | 20 February 1890 |
| Designations | |
| (288) Glauke | |
| Pronunciation | /ËÉ¡lÉËkiË/[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] | |
This body is orbiting the Sun at a distance of 2.76 AU with a moderate eccentricity of 0.20 and an orbital period of 4.59 years. Its orbital plane is inclined at an angle of 4.3° relative to the plane of the ecliptic. It is a common, stony S-type asteroid in both the Tholen and SMASS classification. Based on infrared observations, it has a diameter of 29 km.[2]
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.
