462 Eriphyla
462 Eriphyla is a Koronian asteroid from the outer regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 22 October 1900. The stony S-type asteroid has a rotation period of 8.7 hours and measures approximately in diameter. It was named after Eriphyle, from Greek mythology.
Orbit and classification
Eriphyla is a core member of the Koronis family, a very large outer asteroid family with nearly co-planar ecliptical orbits. It orbits the Sun in the outer asteroid belt at a distance of 2.6–3.1 AU once every 4 years and 10 months. Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic. The asteroid was first observed as at Nice Observatory on 31 December 1896. The body's observation arc begins at Heidelberg on 11 November 1900, three weeks after its official discovery observation.Naming
This minor planet was named from Greek mythology after Eriphyle, wife of Amphiaraus whom she persuaded to take part in a raiding venture which lead to the tragic war of the Seven against Thebes. The was also mentioned in The Names of the Minor Planets by Paul Herget in 1955.Physical characteristics
In both the Tholen and SMASS classification, Eriphyla is a common stony S-type asteroid.Rotation period
In October 2002, a rotational lightcurve of Eriphyla was obtained from photometric observations by Stephen M. Slivan. Lightcurve analysis gave a well-defined rotation period of hours with a brightness variation of magnitude. Several more lightcurves were published since 1987.A modeled lightcurve using photometric data from the Lowell Photometric Database and from the Wide-field Infrared Survey Explorer was published in 2018. It gave a concurring sidereal period of hours and includes two spin axes at and in ecliptic coordinates.