Global Information385 Ilmatar information
 Orbital diagram | |
| Discovery | |
|---|---|
| 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 | |
Mean diameter | 83.857±0.576 km[1] |
| Mass | (1.039 ± 0.515/0.201)×1018 kg[2] |
Mean density | 3.136 ± 1.555/0.607 g/cm3[2] |
Synodic rotation period | 62.35 h (2.598 d) |
Geometric albedo | 0.242±0.042[1] |
Spectral type | S |
Absolute magnitude (H) | 7.85[1] |
Ilmatar (minor planet designation: 385 Ilmatar) is a large main belt asteroid.
It was discovered by Max Wolf on March 1, 1894, in Heidelberg.[3] It was named after Ilmatar, virgin spirit of the air from the Finnish epic Kalevala. Its mass has been estimated as (1.039 ± 0.515/0.201)×1018 kg.[2] Its rotation is 62.35 hr.
- ^ a b c d Cite error: The named reference
jpldatawas invoked but never defined (see the help page). - ^ a b c Cite error: The named reference
FiengaEtAl2020was invoked but never defined (see the help page). - ^ "Physics and Astronomy > Dictionary of Minor Planet Names > (385) Ilmatar". Springer Reference. Retrieved 20 October 2014.