(21392) Helibrochier Main-belt Asteroid
Discovered on 20 March 1998 by LINEAR at Socorro.
Helio Brochier (b. 1954), a 2003 Intel International Science and Engineering Fair Excellence in Teaching Award finalist, is a teacher at the Fundacao Escola Tecnica Liberato Salzano Viera Da Cunha, Montenegro, Rio Grande Do Sul, Brasil.Naming citation (20041226/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Helibrochier is today
Seen from above the solar system on 2026-10-14: Helibrochier is 2.44 au from the Sun and 3.01 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21392 |
| Provisional designation | 1998 FH32 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 13.7 hours |
| Absolute magnitude (H) | 15.13 |
| Orbital period | 3.44 years |
| Semi-major axis | 2.28 au |
| Perihelion – aphelion | 2.04 – 2.53 au |
| Eccentricity | 0.107 |
| Inclination | 6.33° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 20 March 1998
- (8744) Cilla
- (8745) Delaney
- (8954) Baral
- (9126) Samcoulson
- (9243) Alag
- (9454) Ardeishar
- (11169) Alkon
- (11170) Bradenmilford
- (11173) Jayanderson
- (11174) Carandrews
- (11176) Batth
- (11685) Adamcurry