|Discovery and designation|
|Discovered by||A. Mrkos|
|Discovery date||August 28, 1984|
|Epoch May 14, 2008|
3905 Doppler (1984 QO) is a main-belt binary asteroid discovered on August 28, 1984 by A. Mrkos at Klet and named for Christian Doppler. A moon orbiting the asteroid every 2 days, 2 hours, and 48 minutes was found orbiting the asteroid in 2013. This is a fairly long orbital period for a moon of an asteroid of this size.
- Johnston, Robert. "(3905) Doppler". johnstonsarchive.net. Retrieved 28 May 2015.
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