_Ilse.png) 3D model based onlightcurve data | |
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | 16 August 1885 |
| Designations | |
| (249) Ilse | |
| Pronunciation | German:[ˈɪlzə][1] |
Named after | Ilse |
| A885 QA, 1973 PB | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 130.59 yr (47699 d) |
| Aphelion | 2.89450 AU (433.011 Gm) |
| Perihelion | 1.85992 AU (278.240 Gm) |
| 2.37721 AU (355.626 Gm) | |
| Eccentricity | 0.21760 |
| 3.67yr (1338.8d) | |
Averageorbital speed | 19.31 km/s |
| 223.964° | |
| 0° 16m 8.065s / day | |
| Inclination | 9.61979° |
| 334.727° | |
| 42.3241° | |
| Physical characteristics | |
| Dimensions | 34.83±1.1 km |
| 84.94 h (3.539 d) | |
| 0.0428±0.003 | |
| Temperature | unknown |
| 11.33 | |
249 Ilse is aMain beltasteroid. It has an unusually slow rotation period, about 3.5days.
It was discovered byC. H. F. Peters on August 16, 1885, inClinton, New York and was named afterIlse, a legendaryGerman princess.
Due to the long rotation period, a possible asteroidalsatellite of Ilse was proposed by R. P. Binzel in 1987 however no evidence of this has been found.[3]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
