(21011) Johannaterlinden Main-belt Asteroid
Discovered on 1 September 1988 by H. Debehogne at La Silla.
Johanna Helena Terlinden (1920–1989) was the spouse of the Dutch astronomer Theodore Walraven. She was his lifelong coauthor, and the driving force in the concept and design of a unique spectrophotometer devised by him at the Leiden Southern Station (Hartebeespoort, South Africa).Naming citation (WGSBN Bull. 4, #2, 6), IAU / Minor Planet Center, via NASA/JPL
Where Johannaterlinden is today
Seen from above the solar system on 2026-10-14: Johannaterlinden is 2.41 au from the Sun and 3.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21011 |
| Provisional designation | 1988 RP4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.07 km (#12,559 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.267 |
| Absolute magnitude (H) | 14.22 |
| Orbital period | 3.64 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.08 – 2.65 au |
| Eccentricity | 0.120 |
| Inclination | 5.20° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Johanna
All asteroids named after someone called Johanna
Also discovered on 1 September 1988
More named asteroids discovered by H. Debehogne
- (2364) Seillier
- (2543) Machado
- (2590) Mourao
- (2673) Lossignol
- (2707) Ueferji
- (2814) Vieira
- (2852) Declercq
- (2926) Caldeira
- (3002) Delasalle
- (3138) Ciney
- (3274) Maillen
- (3365) Recogne
← (21010) Kishon · (21014) Daishi →