228 Agathe
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Observatory |
| Discovery date | 19 August 1882 |
| Designations | |
| MPC designation | (228) Agathe |
|
Named after
|
daughter of astronomer Theodor v. Oppolzer |
| main-belt | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.45 yr (40343 d) |
| Aphelion | 2.7345 AU (409.08 Gm) |
| Perihelion | 1.6680 AU (249.53 Gm) |
| 2.2013 AU (329.31 Gm) | |
| Eccentricity | 0.24224 |
| 3.27 yr (1192.9 d) | |
| 359.08° | |
| 0° 18m 6.408s / day | |
| Inclination | 2.5363° |
| 313.36° | |
| 19.121° | |
| Earth MOID | 0.657123 AU (98.3042 Gm) |
| Jupiter MOID | 2.62486 AU (392.673 Gm) |
| Jupiter Tisserand parameter | 3.625 |
| Physical characteristics | |
| Dimensions | 9.30±0.8 km |
| 6.484 h (0.2702 d) | |
| 0.2082±0.043 | |
|
B–V = 0.918 U–B = 0.596 S (Tholen), S (SMASS) |
|
| 12.48 | |
228 Agathe is a stony main belt asteroid, about 9 kilometers in diameter. It was discovered by Johann Palisa on August 19, 1882 at Vienna Observatory, Austria. Photometric observations during 2003 showed a rotation period of 6.48 ± 0.01 hours with a brightness variation of 0.27 ± 0.03 in magnitude. An earlier study yielded results that are consistent with these estimates.
Agathe was named after the youngest daughter of Austrian astronomer Theodor von Oppolzer (1841–1886), professor of astronomy in Vienna.
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