1685 Toro

Minor Planet
name = 1685 Toro
discoverer = Carl A. Wirtanen
discovery_date = July 17, 1948
designations = 1948 OA
category = Apollo, Mars crosser
epoch = December 1, 2005 (JD 2453705.5)
semimajor = 1.367 AU
perihelion = 0.771 AU
aphelion = 1.963 AU
eccentricity = 0.436
period = 583.957 d
inclination = 9.380 °
asc_node = 274.355°
arg_peri = 127.037°
mean_anomaly = 266.113°
speed =24.217 km/s
dimensions =3 km
mass =
density =
gravity =
escape_velocity =
rotation =10.2 h
spectral_class = S
abs_mag =14.0-14.4
albedo = .31
temperature =

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.

References

* [http://www.hohmanntransfer.com/cgi-bin/get.cgi Catchall Catalog of Minor Planets]
* [http://newton.dm.unipi.it/cgi-bin/neodys/neoibo?objects:Toro NeoDys]
*
* telnet://ssd.jpl.nasa.gov:6775 telnet for JPL Horizons, easier and more comprehensive than web version