386 Siegena

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386 Siegena
386Siegena (Lightcurve Inversion).png
A three-dimensional model of 386 Siegena based on its light curve
Discovery
Discovered by Max Wolf
Discovery date1 March 1894
Designations
(386) Siegena
Pronunciation /ˈsɡənə/ SEE-gə-nə [1]
Named after
Siegen
1894 AY
Main belt
Adjectives Siegenian /sˈɡɛniən/ see-GHEN-ee-ən [2]
Orbital characteristics [3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 122.08 yr (44590 d)
Aphelion 3.38983  AU (507.111  Gm)
Perihelion 2.40159 AU (359.273 Gm)
2.89571 AU (433.192 Gm)
Eccentricity 0.17064
4.93 yr (1799.8 d)
66.7510°
0° 12m 0.068s / day
Inclination 20.2568°
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

    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.

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

    During 1999, the asteroid was observed occulting a star. The resulting chords provided a diameter estimate of 174 km. [5]

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    References

    1. per "siegenite" . Oxford English Dictionary (Online ed.). Oxford University Press.(Subscription or participating institution membership required.)
    2. "Siegenian" . Oxford English Dictionary (Online ed.). Oxford University Press.(Subscription or participating institution membership required.)
    3. 1 2 "386 Siegena (1894 AY)". JPL Small-Body Database . NASA/Jet Propulsion Laboratory . Retrieved 10 May 2016.
    4. 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv: 1203.4336 , Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
    5. Shevchenko, Vasilij G.; Tedesco, Edward F. (September 2006), "Asteroid albedos deduced from stellar occultations", Icarus, 184 (1): 211–220, Bibcode:2006Icar..184..211S, doi:10.1016/j.icarus.2006.04.006.