(12635) Hennylamers Main-belt Asteroid
Discovered on 26 March 1971 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Dutch astrophysicist Henny Lamers (b. 1941) studied the evolution and mass loss of the most massive stars. He also gave many dozens of popular astronomy lectures for a wide variety of audiences, including children.Naming citation (MPC batch dated 2014-01-16), IAU / Minor Planet Center, via NASA/JPL
Where Hennylamers is today
Seen from above the solar system on 2026-10-14: Hennylamers is 3.23 au from the Sun and 3.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12635 |
| Provisional designation | 4220 T-1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 13.84 |
| Orbital period | 5.19 years |
| Semi-major axis | 3.00 au |
| Perihelion – aphelion | 2.71 – 3.29 au |
| Eccentricity | 0.0962 |
| Inclination | 10.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Henny
All asteroids named after someone called Henny
Also discovered on 26 March 1971
- (5195) Kaendler
- (5491) Kaulbach
- (5492) Thoma
- (5698) Nolde
- (6202) Georgemiley
- (6257) Thorvaldsen
- (6351) Neumann
- (6429) Brancusi
- (6674) Cezanne
- (6752) Ashley
- (7367) Giotto
- (7908) Zwingli