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Discovery
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| Discovered by | Max Wolf |
| Discovery date | March 1, 1894 |
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Designations
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| Named after | Ilmatar |
| Alternate name(s) | 1894 AX |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 480.308 Gm (3.211 AU) |
| Perihelion | 372.044 Gm (2.487 AU) |
| Semi-major axis | 426.176 Gm (2.849 AU) |
| Eccentricity | 0.127 |
| Orbital period | 1756.245 d (4.81 a) |
| Average orbital speed | 17.65 km/s |
| Mean anomaly | 25.258° |
| Inclination | 13.567° |
| Longitude of ascending node | 345.256° |
| Argument of perihelion | 188.316° |
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Physical characteristics
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| Dimensions | 92.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 62.35 hr |
| Albedo | unknown |
| Temperature | unknown |
| Spectral type | S |
| Absolute magnitude (H) | 7.49 |
385 Ilmatar is a large Main Belt asteroid.
It was discovered by Max Wolf on March 1, 1894, in Heidelberg.
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