1657 Roemera

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1657 Roemera
Discovery A
Discoverer Paul Wild
Discovery date March 6, 1961
Alternate
designations
B
1961 EA
Category Main belt
Orbital elements C
Epoch December 1, 2005 (JD2453705.5 )
Eccentricity (e) 0.235
Semi-major axis (a) 2.349 AU
Perihelion (q) 1.798 AU
Aphelion (Q) 2.900 AU
Orbital period (P) 1314.921 d
Mean orbital speed 19.163 km/s
Inclination (i) 23.405 °
Longitude of the
ascending node
(Ω)
105.451°
Argument of
perihelion
(ω)
53.935°
Mean anomaly (M) 157.949°
Physical characteristics D
Dimensions  ? km
Mass
Density
Surface gravity
Escape velocity
Rotation period 4.5 h
Spectral class S
Absolute magnitude 16.9
Albedo (geometric)
Mean surface
temperature
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The minor planet 1657 Roemera was discovered in 1961 by Paul Wild, and named for Elizabeth Roemer, an American astronomer.































[edit] References

See also: List of asteroids