88 Thisbe
| Discovery | |
|---|---|
| Discovered by | Christian Heinrich Friedrich Peters |
| Discovery date | 15 June 1866 |
| Designations | |
| (88) Thisbe | |
| Pronunciation | /ˈθɪzbiː/ |
Named after | Thisbē |
| Main belt | |
| Adjectives | Thisbean /θɪzˈbiːən/, /ˈθɪzbiən/ |
| Orbital characteristics | |
| Epoch 31 December 2006 (JD 2454100.5) | |
| Aphelion | 482.242 Gm (3.224 AU) |
| Perihelion | 345.809 Gm (2.312 AU) |
| 414.025 Gm (2.768 AU) | |
| Eccentricity | 0.165 |
| 1,681.709 d (4.60 yr) | |
| 165.454° | |
| Inclination | 5.219° |
| 276.765° | |
| 36.591° | |
| Physical characteristics | |
| Dimensions | (255×232×193)±12 km |
| 218±3 km 225 km 232 km (Dunham) | |
| Flattening | 0.19 |
| Mass | (11.6±2.2)×1018 kg 18.3×1018 kg 1.5×1019 kg |
Mean density | 2.14±0.42 g/cm3 3.06±0.52 g/cm3 |
| 6.04 h | |
| 0.057 0.067 | |
| B | |
| 7.04 | |
88 Thisbe is the 13th largest main-belt asteroid. It was discovered by C. H. F. Peters on 15 June 1866, and named after Thisbe, heroine of a Roman fable. This asteroid is orbiting the Sun at a distance of 2.768 AU with a period of 4.60 years and an orbital eccentricity (ovalness) of 0.165. The orbital plane is inclined at an angle of 5.219° to the ecliptic.
On 7 October 1981, asteroid 88 Thisbe was observed to occult the 9th-magnitude star SAO 187124 from 12 sites. The timing of the different chords across the asteroid provided a diameter estimate of 232±12 km. This is 10% larger than the diameter estimate based on radiometric techniques. During 2000, 88 Thisbe was observed by radar from the Arecibo Observatory. The return signal matched an effective diameter of 207 ± 22 km. This is consistent with the asteroid dimensions computed through other means.
Photometric observations of this asteroid during 1977 gave a light curve with a period of 6.0422 ± 0.006 hours and a brightness variation of 0.19 in magnitude.