174 Phaedra

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174 Phaedra
174Phaedra (Lightcurve Inversion).png
A three-dimensional model of 174 Phaedra based on its light curve.
Discovered by J. C. Watson
Discovery date September 2, 1877
Main belt
Orbital characteristics[1]
Aphelion 3.274 AU
Perihelion 2.443 AU
2.859 AU
Eccentricity 0.145
4.83 years
Inclination 12.13°
Physical characteristics
5.75 hours
Albedo 0.149
Spectral type

174 Phaedra is a sizable, rocky main belt asteroid that was discovered by Canadian-American astronomer James Craig Watson on September 2, 1877 and named after Phaedra, the tragic lovelorn queen in Greek mythology.

Lightcurve data obtained from Phaedra indicates a rather irregular or elongated body.

Photometric observations of this asteroid at the Shadowbox Observatory in Carmel, Indiana during 2009 gave a light curve with a period of 4.96 ± 0.01 hours. This is consistent with previous studies in 1977, 1988, and 2008.[2]


  1. ^ Yeomans, Donald K., "174 Phaedra", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30. 
  2. ^ Ruthroff, John C. (July 2009), "Photometric Observations and Lightcurve Analysis of Asteroids 129 Antigone, 174 Phaedra, 232 Russia, 291 Alice, and 343 Ostara", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 36 (3): 121–122, Bibcode:2009MPBu...36..121R.