685 Hermia
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 | |
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 | ±0.45 5.475km |
50.40 ± 0.05 h (2.1000 ± 0.0021 d)[2] | |
±0.050 0.2807 | |
12.0 | |
|
685 Hermia is an S-type asteroid belonging to the Flora family in the Main Belt.[2] Its diameter is about 11 km and it has an albedo of 0.281 .
References
- ↑ "685 Hermia (1909 HE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
- 1 2 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
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