228 Agathe
Agathe (minor planet designation: 228 Agathe) is a stony main belt asteroid, about 9 kilometers in diameter. It was discovered by Johann Palisa on 19 August 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.[3]
| Discovery [1] | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Observatory |
| Discovery date | 19 August 1882 |
| Designations | |
| (228) Agathe | |
Named after | daughter of astronomer Theodor v. Oppolzer [2] |
| main-belt | |
| Orbital characteristics [1] | |
| 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) |
| Mars MOID | 0.2931 AU (43.85 Gm) |
| Jupiter MOID | 2.62486 AU (392.673 Gm) |
| TJupiter | 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 | |
Agathe was named after the youngest daughter of Austrian astronomer Theodor von Oppolzer (1841–1886), professor of astronomy in Vienna.[2]
References
- "JPL Small-Body Database Browser: 228 Agathe" (2015-06-18 last obs.). Jet Propulsion Laboratory. Retrieved 12 May 2016.
- Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (228) Agathe. Springer Berlin Heidelberg. p. 35. doi:10.1007/978-3-540-29925-7_229. ISBN 978-3-540-29925-7.
- Cooney, Walter R., Jr. (March 2005), "Lightcurve results for minor planets 228 Agathe, 297 Caecilia, 744 Aguntina 1062 Ljuba, 1605 Milankovitch, and 3125 Hay", The Minor Planet Bulletin, 32 (1): 15–16, Bibcode:2005MPBu...32...15C.
External links
- Dictionary of Minor Planet Names, Google books
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- 228 Agathe at AstDyS-2, Asteroids—Dynamic Site
- 228 Agathe at the JPL Small-Body Database
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