(174) Phaedra Main-belt Asteroid
Discovered on 2 September 1877 by J. C. Watson at Ann Arbor.
👶 Phaedra as a baby name🐶 Phaedra as a dog name
Where Phaedra is today
Seen from above the solar system on 2026-10-14: Phaedra is 2.45 au from the Sun and 2.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 174 |
| Provisional designation | A877 RA |
| Orbit class | Main-belt Asteroid |
| Diameter | 64.8 km (#528 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.169 |
| Rotation period | 5.74 hours |
| Spectral type | S |
| Absolute magnitude (H) | 8.39 |
| Orbital period | 4.83 years |
| Semi-major axis | 2.86 au |
| Perihelion – aphelion | 2.44 – 3.27 au |
| Eccentricity | 0.146 |
| Inclination | 12.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.46 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by J. C. Watson
- (79) Eurynome
- (93) Minerva
- (94) Aurora
- (100) Hekate
- (101) Helena
- (103) Hera
- (104) Klymene
- (105) Artemis
- (106) Dione
- (115) Thyra
- (119) Althaea
- (121) Hermione
← (173) Ino · (175) Andromache →