(287) Nephthys Main-belt Asteroid
Discovered on 25 August 1889 by C. H. F. Peters at Clinton.
Where Nephthys is today
Seen from above the solar system on 2026-10-14: Nephthys is 2.33 au from the Sun and 1.87 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 287 |
| Provisional designation | A889 QA |
| Orbit class | Main-belt Asteroid |
| Diameter | 59.6 km (#592 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.238 |
| Rotation period | 7.61 hours |
| Spectral type | S |
| Absolute magnitude (H) | 8.25 |
| Orbital period | 3.61 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 2.30 – 2.41 au |
| Eccentricity | 0.0238 |
| Inclination | 10.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.29 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by C. H. F. Peters
- (72) Feronia
- (75) Eurydike
- (77) Frigga
- (85) Io
- (88) Thisbe
- (92) Undina
- (98) Ianthe
- (102) Miriam
- (109) Felicitas
- (111) Ate
- (112) Iphigenia
- (114) Kassandra
← (286) Iclea · (288) Glauke →