(11766) Fredseares Main-belt Asteroid
Discovered on 17 October 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Frederick H. Seares (1873-1964) was an American astronomer who standardized the stellar magnitude system and extended it using photography at Mt. Wilson Observatory. He measured and interpreted color indices of stars.Naming citation (20071124/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Fredseares is today
Seen from above the solar system on 2026-10-14: Fredseares is 3.08 au from the Sun and 3.54 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11766 |
| Provisional designation | 9073 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 14.5 km (#3,259 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0500 |
| Absolute magnitude (H) | 13.19 |
| Orbital period | 5.58 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 2.66 – 3.63 au |
| Eccentricity | 0.154 |
| Inclination | 4.91° |
| Closest distance between its orbit and Earth's (MOID) | 1.66 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Frederick
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- (9151) Kettnergriswold
- (9273) Schloerb
- (9677) Gowlandhopkins
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- (39566) Carllewis
- (43293) Banting
- (45595) Inman
- (74509) Gillett
- (95449) Frederickgregory
- (152641) Fredreed
- (164405) Fennell
All asteroids named after someone called Frederick
Also discovered on 17 October 1960
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- (2412) Wil
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- (3279) Solon
- (3604) Berkhuijsen
- (3734) Waland
- (4355) Memphis
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- (4907) Zoser
- (5012) Eurymedon