Johannes Franz Hartmann | |
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| Born | (1865-01-11)11 January 1865 |
| Died | 13 September 1936(1936-09-13) (aged 71) |
| Citizenship | German |
| Alma mater | University of Leipzig |
| Known for | Discoveringinterstellar medium |
| Scientific career | |
| Fields | Astronomy |
| Institutions | Astrophysical Observatory Potsdam |
| Doctoral advisor | Heinrich Bruns |
| 965 Angelica | 4 November 1921 | MPC |
| 1029 La Plata | 28 April 1924 | MPC |
| 1254 Erfordia | 10 May 1932 | MPC |
Johannes Franz Hartmann (11 January 1865 – 13 September 1936) was a Germanphysicist andastronomer. In 1904, while studying thespectroscopy ofDelta Orionis he noticed that most of the spectrum had a shift, except thecalcium lines, which he interpreted as indicating the presence ofinterstellar medium.[2][3]
He was the director of theLa Plata Astronomical Observatory, Argentina, from November 1922 to May 1934, and was also known under the nameJuan Hartmann. He oriented the work of the observatory towardsastrophysics and discovered the threeasteroids of the main-belt,965 Angelica,1029 La Plata and1254 Erfordia at La Plata between 1921 and 1932.[1]
His doctorate was from theUniversity of Leipzig in 1891 on lunar eclipses.[4]
The lunar craterHartmann on thefar side of the Moon was named in his honor. Note, however, that the asteroid3341 Hartmann was named afterWilliam K. Hartmann and is unrelated to him.[5]
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