(11265) Hasselmann Main-belt Asteroid
Discovered on 2 March 1981 by S. J. Bus at Siding Spring.
Pedro Henrique Aragão Hasselmann (b. 1987) completed his PhD at Observatório Nacional do Rio de Janeiro researching the photometric properties and phase functions of asteroids.Naming citation (MPC batch dated 2017-03-12), IAU / Minor Planet Center, via NASA/JPL
Where Hasselmann is today
Seen from above the solar system on 2026-10-14: Hasselmann is 2.65 au from the Sun and 1.86 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11265 |
| Provisional designation | 1981 EU34 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.85 km (#17,187 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.325 |
| Absolute magnitude (H) | 15.87 |
| Orbital period | 3.64 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.06 – 2.67 au |
| Eccentricity | 0.128 |
| Inclination | 1.28° |
| Closest distance between its orbit and Earth's (MOID) | 1.07 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Pedro
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- (4617) Zadunaisky
- (10694) Lacerda
- (13082) Gutierrez
- (17041) Castagna
- (20227) Bernardinelli
- (24048) Pedroduque
- (31648) Pedrosada
- (32599) Pedromachado
- (35623) Pedrodavid
- (249539) Pedrosevilla
- (554239) Montseypedro
All asteroids named after someone called Pedro
Also discovered on 2 March 1981
- (2884) Reddish
- (2919) Dali
- (2980) Cameron
- (2981) Chagall
- (2990) Trimberger
- (3000) Leonardo
- (3121) Tamines
- (3122) Florence
- (3207) Spinrad
- (3252) Johnny
- (3304) Pearce
- (3524) Schulz