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 byW. Lorenz
Discovery siteHeidelberg Obs.
Discovery date12 August 1909
Designations
MPC designation(685) Hermia
1909 HE
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc89.52 yr (32696 d)
Aphelion2.6752 AU (400.20 Gm)
Perihelion1.7969 AU (268.81 Gm)
2.2360 AU (334.50 Gm)
Eccentricity0.19640
3.34 yr (1221.3 d)
4.11590°
0° 17m 41.208s / day
Inclination3.6466°
235.210°
80.876°
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 [3] belonging to the Flora family in the Main Belt. [2] Its diameter is about 11 km and it has an albedo of 0.281.[4]


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.
  3. ^ "Asteroid Taxonomy". PDS Asteroid/Dust Archive. NASA. Archived from the original on 5 August 2009.
  4. ^ "Supplemental IRAS Minor Planet Survey (SIMPS) and IRAS Minor Planet Survey (IMPS)". PDS Asteroid/Dust Archive. NASA. Archived from the original on 17 January 2010.

External links[edit]