385 Ilmatar

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385 Ilmatar
Orbita asteroida 385.png
Orbital diagram
Discovery
Discovered by Max Wolf
Discovery date1 March 1894
Designations
(385) Ilmatar
Named after
Ilmatar
1894 AX
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)
2.85112 AU (426.521 Gm)
Eccentricity 0.12236
4.81 yr (1758.4 d)
166.647°
0° 12m 17.024s / day
Inclination 13.5514°
345.021°
187.911°
Physical characteristics
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]
62.35  h (2.598  d)
0.242±0.042 [1]
S
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.

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    References

    1. 1 2 3 4 "385 Ilmatar (1894 AX)". JPL Small-Body Database . NASA/Jet Propulsion Laboratory . Retrieved 10 May 2016.
    2. 1 2 3 Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society. 492 (1): 589–602. doi: 10.1093/mnras/stz3407 .
    3. "Physics and Astronomy > Dictionary of Minor Planet Names > (385) Ilmatar". Springer Reference. Retrieved 20 October 2014.