(21369) Gertfinger Main-belt Asteroid
Discovered on 8 July 1997 by ODAS at Caussols.
Gert Finger works at the European Southern Observatory. He has been a leader in the use of infrared sensors in the highest quality infrared instrumentation. His world-class detector characterization laboratory routinely achieves “lowest noise” figures.Naming citation (20051215/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Gertfinger is today
Seen from above the solar system on 2026-10-14: Gertfinger is 2.73 au from the Sun and 2.25 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21369 |
| Provisional designation | 1997 NO4 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 101 hours |
| Absolute magnitude (H) | 13.75 |
| Orbital period | 5.30 years |
| Semi-major axis | 3.04 au |
| Perihelion – aphelion | 2.71 – 3.36 au |
| Eccentricity | 0.107 |
| Inclination | 12.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.74 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Gert
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