(176) Iduna Main-belt Asteroid
Discovered on 14 October 1877 by C. H. F. Peters at Clinton.
Where Iduna is today
Seen from above the solar system on 2026-10-14: Iduna is 3.29 au from the Sun and 3.88 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 176 |
| Provisional designation | A877 TB |
| Orbit class | Main-belt Asteroid |
| Diameter | 107 km (#209 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0650 |
| Rotation period | 11.3 hours |
| Spectral type | G |
| Absolute magnitude (H) | 8.41 |
| Orbital period | 5.68 years |
| Semi-major axis | 3.18 au |
| Perihelion – aphelion | 2.63 – 3.73 au |
| Eccentricity | 0.173 |
| Inclination | 22.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.64 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
← (175) Andromache · (177) Irma →