1685 Toro
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| Discovery A | |
|---|---|
| Discoverer | Carl A. Wirtanen |
| Discovery date | July 17, 1948 |
| Alternate designations B |
1948 OA |
| Category | Apollo, Mars crosser |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.436 |
| Semi-major axis (a) | 1.367 AU |
| Perihelion (q) | 0.771 AU |
| Aphelion (Q) | 1.963 AU |
| Orbital period (P) | 583.957 d |
| Mean orbital speed | 24.217 km/s |
| Inclination (i) | 9.380 ° |
| Longitude of the ascending node (Ω) |
274.355° |
| Argument of perihelion (ω) |
127.037° |
| Mean anomaly (M) | 266.113° |
| Physical characteristics D | |
| Dimensions | 3 km |
| Mass | |
| Density | |
| Surface gravity | |
| Escape velocity | |
| Rotation period | 10.2 h |
| Spectral class | S |
| Absolute magnitude | 14.0-14.4 |
| Albedo (geometric) | .31 |
| Mean surface temperature |
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1685 Toro is an asteroid discovered by Carl A. Wirtanen in 1948. It orbits the Sun in an 8:5 resonance with Earth, and a 13:5 resonance with Venus.
It was one of the first Apollo asteroids to be discovered. It is named after the maiden name of Samuel Herrick's wife.
[edit] References
- Catchall Catalog of Minor Planets
- NeoDys
- NASA JPL Small-Body Database Browser on 1685 Toro
- telnet://ssd.jpl.nasa.gov:6775 telnet for JPL Horizons, easier and more comprehensive than web version
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