(11831) Chaple Main-belt Asteroid
Discovered on 28 September 1984 by B. A. Skiff at Anderson Mesa.
Glenn Chaple (b. 1947) is an American popularizer of astronomy. He is best known for his 20-year career as a contributing editor for Astronomy magazine. As a member of the AAVSO he has submitted over 80,000 visual estimates of variable stars. He served as president (2015–2018) of the Amateur Telescope Makers of Boston.Naming citation (WGSBN Bull. 2, #16, 6), IAU / Minor Planet Center, via NASA/JPL
Where Chaple is today
Seen from above the solar system on 2026-10-14: Chaple is 2.98 au from the Sun and 3.25 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11831 |
| Provisional designation | 1984 SF3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.7 km (#4,723 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0490 |
| Rotation period | 32.3 hours |
| Absolute magnitude (H) | 13.86 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.24 – 3.06 au |
| Eccentricity | 0.155 |
| Inclination | 3.19° |
| Closest distance between its orbit and Earth's (MOID) | 1.25 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Glenn
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- (12936) Glennschneider
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- (192626) Glennunderhill
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- (380480) Glennhawley
- (416273) Glennsnyder
All asteroids named after someone called Glenn
Also discovered on 28 September 1984
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- (3154) Grant
- (3155) Lee
- (3706) Sinnott
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- (7393) Luginbuhl
- (8147) Colemanhawkins
- (24643) MacCready
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