_Comacina.png) Shape of Comacina from modeled lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Luigi Carnera |
| Discovery site | Heidelberg |
| Discovery date | 2 September 1902 |
| Designations | |
| MPC designation | (489) Comacina |
| Pronunciation | /kɒməˈsaɪnə/ |
| Named after | Isola Comacina |
| Alternative designations | 1902 JM |
| Adjectives | Comacinian /kɒməˈsɪniən/ |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 105.09 yr (38384 d) |
| Aphelion | 3.2927 AU (492.58 Gm) |
| Perihelion | 3.0089 AU (450.13 Gm) |
| Semi-major axis | 3.1508 AU (471.35 Gm) |
| Eccentricity | 0.045031 |
| Orbital period (sidereal) | 5.59 yr (2042.8 d) |
| Mean anomaly | 282.24° |
| Mean motion | 0° 10 34.428 / day |
| Inclination | 13.000° |
| Longitude of ascending node | 166.898° |
| Argument of perihelion | 12.215° |
| Physical characteristics | |
| Mean radius | 69.695±1.5 km |
| Synodic rotation period | 9.02 h (0.376 d) |
| Geometric albedo | 0.0427±0.002 |
| Absolute magnitude (H) | 8.32 |
489 Comacina is a minor planet located in the asteroid belt. It is named after Isola Comacina, an island in Lake Como, Italy.
References
- Noah Webster (1884) A Practical Dictionary of the English Language
- "489 Comacina (1902 JM)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.
External links
- 489 Comacina at AstDyS-2, Asteroids—Dynamic Site
- 489 Comacina at the JPL Small-Body Database
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