21064 Yangliwei

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21064 Yangliwei
Discovery A
Discoverer Eric Walter Elst
Discovery date June 6, 1991
Alternate
designations
B
1991 LY1, 1999 VT38
Category Main belt
Orbital elements C
Epoch November 26, 2005 (JD 2453700.5)
Eccentricity (e) 0.123
Semi-major axis (a) 476.390 Gm (3.184 AU)
Perihelion (q) 417.926 Gm (2.794 AU)
Aphelion (Q) 534.854 Gm (3.575 AU)
Orbital period (P) 2075.650 d (5.68 a)
Mean orbital speed 16.63 km/s
Inclination (i) 2.607°
Longitude of the
ascending node
(Ω)
81.551°
Argument of
perihelion
(ω)
160.312°
Mean anomaly (M) 200.741°
Physical characteristics D
Dimensions  ? km
Mass  ?×10? kg
Density  ? g/cm³
Surface gravity  ? m/s²
Escape velocity  ? km/s
Rotation period  ? d
Spectral class  ?
Absolute magnitude 14.1
Albedo (geometric) 0.1?
Mean surface
temperature
~156 K
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21062 Yangliwei is an asteroid named after Chinese astronaut Yang Liwei. It was discovered in 1991 and named in 2005.

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