(11681) Ortner Main-belt Asteroid
Discovered on 1 March 1998 by ODAS at Caussols.
Johannes Ortner (b. 1933) is founder and unique director of the Summer School Alpbach. Held annually since 1975, Alpbach provides in-depth teaching on all aspects of space science and technology for European students, culminating in the design of innovative space-mission proposals.Naming citation (20081113/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ortner is today
Seen from above the solar system on 2026-10-14: Ortner is 2.14 au from the Sun and 2.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11681 |
| Provisional designation | 1998 EP6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.91 km (#12,976 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.349 |
| Rotation period | 5.00 hours |
| Absolute magnitude (H) | 14.0 |
| Orbital period | 3.24 years |
| Semi-major axis | 2.19 au |
| Perihelion – aphelion | 1.96 – 2.41 au |
| Eccentricity | 0.103 |
| Inclination | 2.01° |
| Closest distance between its orbit and Earth's (MOID) | 0.966 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Johannes
- (5703) Hevelius
- (7343) Ockeghem
- (10506) Rydberg
- (11245) Hansderijk
- (12134) Hansfriedeman
- (12617) Angelusilesius
- (13332) Benkhoff
- (14541) Sacrobosco
- (15955) Johannesgmunden
- (18032) Geiss
- (26355) Grueber
- (32606) Markkanen
All asteroids named after someone called Johannes
Also discovered on 1 March 1998
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- (11363) Vives
- (12059) du Chatelet
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- (17770) Baume
- (17771) Elsheimer
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- (19400) Emileclaus
- (20246) Frappa
- (20249) Bincheng
- (20250) Burdanov
- (20251) Carminegiordano