685 Hermia

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685 Hermia
685Hermia (Lightcurve Inversion).png
A three-dimensional model of 685 Hermia based on its light curve.
Discovery
Discovered by W. Lorenz
Discovery site Heidelberg
Discovery date 12 August 1909
Designations
1909 HE
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 89.52 yr (32696 d)
Aphelion 2.6752 AU (400.20 Gm)
Perihelion 1.7969 AU (268.81 Gm)
2.2360 AU (334.50 Gm)
Eccentricity 0.19640
3.34 yr (1221.3 d)
4.11590°
0° 17m 41.208s / day
Inclination 3.6466°
235.210°
80.876°
Earth MOID 0.787259 AU (117.7723 Gm)
Jupiter MOID 2.60969 AU (390.404 Gm)
Jupiter Tisserand parameter 3.610
Physical characteristics
Mean radius
5.475±0.45 km
50.40 h (2.100 d)
0.2807±0.050
12.0

685 Hermia is an S-type asteroid[1] belonging to the Flora family in the Main Belt. Its diameter is about 11 km and it has an albedo of 0.281 [2].

References[edit]

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