Jump to content

386 Siegena

From Wikipedia, the free encyclopedia

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/ˈsɡənə/ SEE-gə-nə[1]
Named after
Siegen
1894 AY
Main belt
AdjectivesSiegenian /sˈɡɛniən/ see-GHEN-ee-ən[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

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]

References

[edit]
  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. ^ a b "386 Siegena (1894 AY)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
  4. ^ a b c 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.
[edit]