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 | |
|
|
|
| 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 |
|
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
- JPL neo page, including orbit diagrams
- telnet://ssd.jpl.nasa.gov:6775 telnet for JPL Horizons, easier and more comprehensive than web version
See also: List of asteroids
 |
This article about an asteroid native to the Main Belt is a stub. You can help Wikipedia by expanding it. |
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
