Back 1409 هورخيمير (كويكب) ARZ (11409) Horkheimer CE 11409 Horkheimer Esperanto سیارک ۱۱۴۰۹ Persian (11409) Horkheimer French 11409 Horkheimer Italian (11409) Horkheimer Polish 11409 Horkheimer Portuguese 11409 Horkheimer Romanian 11409 Horkheimer Swedish
| Discovery[1] | |
|---|---|
| Discovered by | LONEOS |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 19 March 1999 |
| Designations | |
| (11409) Horkheimer | |
Named after | Jack Horkheimer[1] (American science communicator) |
| 1999 FD9 · 1988 HY 1990 RH15 | |
| main-belt[1][2] · (outer) Themis[3] | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 29.11 yr (10,632 d) |
| Aphelion | 3.5587 AU |
| Perihelion | 2.8167 AU |
| 3.1877 AU | |
| Eccentricity | 0.1164 |
| 5.69 yr (2,079 d) | |
| 109.84° | |
| 0° 10m 23.52s / day | |
| Inclination | 2.2984° |
| 115.92° | |
| 74.973° | |
| Physical characteristics | |
| 15.355±0.100 km[4] | |
| 0.053±0.005[4] | |
| C (Themis family) | |
| 12.8[1][2] | |
11409 Horkheimer, provisional designation 1999 FD9, is a Themistian asteroid from the outer regions of the asteroid belt, approximately 15 kilometers (9.3 miles) in diameter. It was discovered on 19 March 1999, by astronomers of the Lowell Observatory Near-Earth Object Search at Anderson Mesa Station near Flagstaff, Arizona. The likely C-type asteroid was named for American science communicator Jack Horkheimer.[1]
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