Friedrich Tietjen

Friedrich Tietjen (1832 in Westerstede, Oldenburg – 1895 in Berlin) was a German astronomer.^[2]

Asteroids discovered: 1 ^[1]
86 Semele	4 January 1866	MPC

He was director of the Astronomisches Rechen-Institut (ARI) from 1874 until his death in 1895. The Minor Planet Center credits him with the discovery of one minor planet, the 120-kilometer sized asteroid 86 Semele.^[1]

The main-belt asteroid 2158 Tietjen, discovered by Karl Reinmuth at Heidelberg Observatory in 1933, was named in his memory.^[2]

References

^ ^a ^b "Minor Planet Discoverers (by number)". Minor Planet Center. 20 June 2016. Retrieved 15 August 2016.
^ ^a ^b Schmadel, Lutz D. (2007). "(1567) Alikoski". Dictionary of Minor Planet Names – (1567) Alikoski. Springer Berlin Heidelberg. p. 124. doi:10.1007/978-3-540-29925-7_1568. ISBN 978-3-540-00238-3.

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