(12885) Hannahguan Main-belt Asteroid
Discovered on 17 August 1998 by LINEAR at Socorro.
Hannah Guan (b. 2006) was a finalist in the 2019 Broadcom MASTERS, a math and science competition for middle-school students, for her medicine and health sciences project. She attended the BASIS San Antonio Shavano Campus, San Antonio, Texas.Naming citation (WGSBN Bull. 3, #1, 9), IAU / Minor Planet Center, via NASA/JPL
Where Hannahguan is today
Seen from above the solar system on 2026-10-14: Hannahguan is 2.91 au from the Sun and 2.30 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12885 |
| Provisional designation | 1998 QM34 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.01 km (#6,565 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.109 |
| Rotation period | 3.60 hours |
| Absolute magnitude (H) | 13.98 |
| Orbital period | 4.68 years |
| Semi-major axis | 2.80 au |
| Perihelion – aphelion | 2.39 – 3.21 au |
| Eccentricity | 0.147 |
| Inclination | 8.06° |
| Closest distance between its orbit and Earth's (MOID) | 1.40 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hannah
- (13246) Hannahshu
- (16117) Herbst
- (20069) Monyer
- (21695) Hannahwolf
- (26736) Rojeski
- (27520) Rounds
- (28571) Hannahlarson
- (28742) Hannahsteele
- (29979) Wastyk
- (31399) Susorney
- (31641) Cevasco
- (33834) Hannahkaplan
All asteroids named after someone called Hannah
Also discovered on 17 August 1998
- (9474) Cassadrury
- (9476) Vincenthuang
- (9477) Kefennell
- (10635) Chiragkumar
- (11189) Rabeaton
- (11369) Brazelton
- (11370) Nabrown
- (11371) Camley
- (11372) Aditisingh
- (11373) Carbonaro
- (11737) Gregneat
- (12545) Taniamurphy