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386 Siegena

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Main-belt asteroid

386 Siegena
Discovery
A three-dimensional model of 386 Siegena based on its light curve
Discovered by	Max Wolf
Discovery date	1 March 1894
Designations
MPC designation	(386) Siegena
Pronunciation	/ˈsiːɡənə/SEE-gə-nə^[1]
Named after	Siegen
Alternative designations	1894 AY
Minor planet category	Main belt
Adjectives	Siegenian/siːˈɡɛniən/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)
Semi-major axis	2.89571 AU (433.192 Gm)
Eccentricity	0.17064
Orbital period (sidereal)	4.93yr (1799.8d)
Mean anomaly	66.7510°
Mean motion	0° 12^m 0.068^s / day
Inclination	20.2568°
Longitude of ascending node	166.886°
Argument of perihelion	219.478°
Physical characteristics
Dimensions	165.01±2.7 km^[3] 170.35 ± 8.40 km^[4]
Mass	(8.14 ± 1.58) × 10¹⁸ kg^[4]
Meandensity	3.14 ± 0.76 g/cm³^[4]
Synodic rotation period	9.763 h (0.4068 d)
Geometric albedo	0.0692±0.002
Spectral type	C
Absolute magnitude (H)	7.43

386 Siegena is a very largemain-belt asteroid. It is classified as aC-type asteroid and is probably composed of primitivecarbonaceous material.

It was discovered byMax Wolf on March 1, 1894, inHeidelberg.

During 1999, the asteroid was observedocculting a star. The resultingchords provided a diameter estimate of 174 km.^[5]

^per"siegenite".Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription orparticipating institution membership required.)
^"Siegenian".Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription orparticipating institution membership required.)
^^a ^b"386 Siegena (1894 AY)".JPL Small-Body Database.NASA/Jet Propulsion Laboratory. Retrieved10 May 2016.
^^a ^b ^cCarry, 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.
^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.

v t e Minor planets navigator
385 Ilmatar 386 Siegena 387 Aquitania

Designation Groups List Moon Meanings of names
Asteroid	Active Aten asteroid Asteroid belt Family Jupiter trojan Near-Earth Spectral types
Distant minor planet	Centaur Neptune trojan Damocloid Trans-Neptunian object Detached Kuiper belt Oort cloud Scattered disc

Other

Authority control databases	JPL SBDB MPC

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