Comacina (minor planet designation: 489 Comacina) is a minor planet located in the asteroid belt. It is named after Isola Comacina, an island in Lake Como, Italy.
![]() Shape of Comacina from modeled lightcurve | |
Discovery | |
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Discovered by | Luigi Carnera |
Discovery site | Heidelberg |
Discovery date | 2 September 1902 |
Designations | |
MPC designation | (489) Comacina |
Pronunciation | /kɒməˈsaɪnə/[1] |
Named after | Isola Comacina |
Alternative designations | 1902 JM |
Adjectives | Comacinian /kɒməˈsɪniən/ |
Orbital characteristics[2] | |
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° 10m 34.428s / 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 |
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