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 Obs.
Discovery date 12 August 1909
Designations
MPC designation (685) Hermia
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 ± 0.05 h (2.1000 ± 0.0021 d)[2]
0.2807±0.050
12.0

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

References[edit]

  1. ^ "685 Hermia (1909 HE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016. 
  2. ^ a b Kryszczynska, A.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy & Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. A72. 

External links[edit]