1657 Roemera
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Discovery A | |
---|---|
Discoverer | Paul Wild |
Discovery date | March 6, 1961 |
Alternate designations B |
1961 EA |
Category | Main belt |
Orbital elements C | |
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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
- Catchall Catalog of Minor Planets
- AstDys
- NASA JPL Small-Body Database Browser on 1657 Roemera
- telnet://ssd.jpl.nasa.gov:6775 telnet for JPL Horizons, easier and more comprehensive than web version
See also: List of asteroids