Ilmatar (minor planet designation: 385 Ilmatar) is a large Main Belt asteroid.
Discovery | |
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Discovered by | Max Wolf |
Discovery date | 1 March 1894 |
Designations | |
MPC designation | (385) Ilmatar |
Named after | Ilmatar |
Alternative designations | 1894 AX |
Minor planet category | Main belt |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 122.12 yr (44604 d) |
Aphelion | 3.19998 AU (478.710 Gm) |
Perihelion | 2.50226 AU (374.333 Gm) |
Semi-major axis | 2.85112 AU (426.521 Gm) |
Eccentricity | 0.12236 |
Orbital period (sidereal) | 4.81 yr (1758.4 d) |
Mean anomaly | 166.647° |
Mean motion | 0° 12m 17.024s / day |
Inclination | 13.5514° |
Longitude of ascending node | 345.021° |
Argument of perihelion | 187.911° |
Physical characteristics | |
Dimensions | 91.53±1.6 km |
Synodic rotation period | 62.35 h (2.598 d) |
Geometric albedo | 0.2129±0.008 |
Spectral type | S |
Absolute magnitude (H) | 7.49 |
It was discovered by Max Wolf on March 1, 1894, in Heidelberg.[2] It was named after Ilmatar, virgin spirit of the air. Its mass is unknown. Its rotation is 62.35 hr.
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