(747) Winchester Main-belt Asteroid
Discovered on 7 March 1913 by J. H. Metcalf at Winchester.
Where Winchester is today
Seen from above the solar system on 2026-10-14: Winchester is 2.50 au from the Sun and 2.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 747 |
| Provisional designation | A913 EK |
| Orbit class | Main-belt Asteroid |
| Diameter | 172 km (#50 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0503 |
| Rotation period | 9.41 hours |
| Spectral type | PC |
| Absolute magnitude (H) | 8.03 |
| Orbital period | 5.19 years |
| Semi-major axis | 3.00 au |
| Perihelion – aphelion | 1.98 – 4.02 au |
| Eccentricity | 0.340 |
| Inclination | 18.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.08 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
← (746) Marlu · (748) Simeisa →