386 Siegena

Siegena (minor planet designation: 386 Siegena) is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material.

386 Siegena
A three-dimensional model of 386 Siegena based on its light curve
Discovery
Discovered byMax Wolf
Discovery date1 March 1894
Designations
(386) Siegena
Pronunciation/ˈsiːɡənə/[1]
Named after
Siegen
1894 AY
Main belt
AdjectivesSiegenian /siːˈɡɛniən/[2]
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc122.08 yr (44590 d)
Aphelion3.38983 AU (507.111 Gm)
Perihelion2.40159 AU (359.273 Gm)
2.89571 AU (433.192 Gm)
Eccentricity0.17064
4.93 yr (1799.8 d)
66.7510°
0° 12m 0.068s / day
Inclination20.2568°
166.886°
219.478°
Physical characteristics
Dimensions165.01±2.7 km[3]
170.35 ± 8.40 km[4]
Mass(8.14 ± 1.58) × 1018 kg[4]
Mean density
3.14 ± 0.76 g/cm3[4]
9.763 h (0.4068 d)
0.0692±0.002
C
7.43

    It was discovered by Max Wolf on March 1, 1894, in Heidelberg.

    References
    1. per "siegenite". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
    2. "Siegenian". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
    3. "386 Siegena (1894 AY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
    4. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.


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