230 Athamantis
 | |
| Discovery | |
|---|---|
| Discovered by | K. de Ball |
| Discovery date | 3 September 1882 |
| Designations | |
| (230) Athamantis | |
| Pronunciation | /æθəˈmæntɪs/ |
Named after | Helle |
| 1949 WG | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 133.58 yr (48791 d) |
| Aphelion | 2.52818 AU (378.210 Gm) |
| Perihelion | 2.23641 AU (334.562 Gm) |
| 2.38229 AU (356.386 Gm) | |
| Eccentricity | 0.06124 |
| 3.68 yr (1343.0 d) | |
Average orbital speed | 19.3 km/s |
| 116.2° | |
| 0° 16m 4.969s / day | |
| Inclination | 9.443° |
| 239.9° | |
| 139.1° | |
| Physical characteristics | |
| 118±2 km[2] 111.332±1.231 km[1] 110.17 ± 4.57 km[3] | |
| Flattening | 0.24[a] |
| Mass | (2.3±1.1)×1018 kg[2] (1.89±0.19)×1018 kg[3] |
Mean density | 2.7±1.3 g/cm3[2] 2.69±0.43 g/cm3[3] |
| 24.0055 h (1.00023 d)[1] 23.99 h[4] | |
| 0.146 (calculated)[2] 0.164±0.029[1] | |
| S | |
| 7.53[1] | |
230 Athamantis is a fairly large main-belt asteroid that was discovered by the German-Austrian astronomer K. de Ball on September 3, 1882, in Bothkamp. It was his only asteroid discovery. The asteroid was named after Athamantis, daughter of Athamas the mythical Greek king of Orchomenus.
Photometric observations of this asteroid gave a light curve with a period of 23.99 hours and a brightness variation of more than 0.20 in magnitude.[4] It has the spectrum of an S-type asteroid. During 1991, the asteroid was observed occulting a star. The resulting chords provided a cross-section diameter estimate of 101.8 km.[5]
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Notes
[edit | edit source]References
[edit | edit source]- ^ a b c d e Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d e P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
- ^ a b c Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). See Table 1.
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 230 Athamantis at AstDyS-2, Asteroids—Dynamic Site
- 230 Athamantis at the JPL Small-Body DatabaseLua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
Lua error in Module:Authority_control at line 153: attempt to index field 'wikibase' (a nil value).
_mathilde.jpg){kind=small} | This article about an S-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |