3905 Doppler
3905 Doppler, provisional designation 1984 QO, is a stony asteroid and binary system from the middle region of the asteroid belt, approximately 8 kilometers in diameter.
| Discovery | |
|---|---|
| Discovered by | A. Mrkos |
| Discovery site | Kleť Obs. |
| Discovery date | 28 August 1984 |
| Designations | |
MPC designation | (3905) Doppler |
| Pronunciation | /ˈdɒplər/ |
Named after | Christian Doppler (Austrian physicist) |
Alternative designations | 1984 QO · 1980 RP2 |
Minor planet category | main-belt |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 35.81 yr (13,078 days) |
| Aphelion | 3.2190 AU |
| Perihelion | 1.9001 AU |
Semi-major axis | 2.5596 AU |
| Eccentricity | 0.2577 |
Orbital period (sidereal) | 4.10 yr (1,496 days) |
Mean anomaly | 320.23° |
Mean motion | 0° 14m 26.52s / day |
| Inclination | 14.192° |
Longitude of ascending node | 343.32° |
| 90.823° | |
| Known satellites | 1 |
| Physical characteristics | |
| Dimensions | 8.021±0.047 km |
Synodic rotation period | 50.8±0.1 h |
| 0.228±0.040 | |
| S | |
| 12.6 | |
The asteroid was discovered on 28 August 1984, by Czech astronomer Antonín Mrkos at Kleť Observatory and named after physicist Christian Doppler.
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