(757) Portlandia Main-belt Asteroid
Discovered on 30 September 1908 by J. H. Metcalf at Taunton.
Where Portlandia is today
Seen from above the solar system on 2026-10-14: Portlandia is 2.26 au from the Sun and 2.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 757 |
| Provisional designation | A908 TG |
| Orbit class | Main-belt Asteroid |
| Diameter | 32.9 km (#1,232 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.217 |
| Rotation period | 6.58 hours |
| Spectral type | XF |
| Absolute magnitude (H) | 10.06 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.12 – 2.63 au |
| Eccentricity | 0.108 |
| Inclination | 8.17° |
| Closest distance between its orbit and Earth's (MOID) | 1.14 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by J. H. Metcalf
- (525) Adelaide
- (581) Tauntonia
- (599) Luisa
- (600) Musa
- (602) Marianna
- (603) Timandra
- (604) Tekmessa
- (611) Valeria
- (620) Drakonia
- (622) Esther
- (636) Erika
- (637) Chrysothemis
← (756) Lilliana · (758) Mancunia →