Werner Landgraf

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Werner Landgraf
Werner Landgraf (1991)
Born (1959-07-29) July 29, 1959 (age 64)
Mainz, Germany
NationalityGerman
Awards
  • 3132 Landgraf
Scientific career
FieldsAstrophysics, Cosmology, Fundamental Physics
Thesis Nichtgravitative Kräfte beim Halleyschen Kometen  (1988)
Doctoral advisorHans-Heinrich Voigt

Werner Landgraf (born 29 July 1959, in

astrophysicist and a discoverer of minor planets
.

Life

W. Landgraf studied physics at the University of Siegen in 1977 and was working on his first astronomical projects.[1] His earliest work was very inspired by Brian G. Marsden and Victor Shor. Two years later, he joined the Department of Astrophysics of University of Göttingen. There he presented his thesis The calculation of atmospheric models and line profiles for the analysis of stellar spectra. He graduated from the university in 1983,[2] and then he worked until 1988 on his dissertation Nongravitational forces of Comet Halley.,[3] under supervision by Hans-Heinrich Voigt.

In 1986, W. Landgraf received a teaching position at the University of Siegen. In addition to the main lecture about astronomy and astrophysics, he gave lectures also on solar system objects and their motion, Relativity and Cosmology.[4]

Work

W. Landgraf's work mainly concerns the verification and determination of

near-Earth asteroids, comets, their long term dynamics,[5] and with the observation of small planets and comets.[5]

He also developed a method of eliminating systematic errors in positioning brighter comets that resulted in a more accurate prediction of the

Halley's Comet.[6] A recalculation of the path of Halley's comet to 2317 BC confirmed that the Greeks had already seen the comet on 466 B.C.[7][8][9]

Minor planets discovered: 7 [10]
3683 Baumann
 23 June 1987
4349 Tibúrcio 5 June 1989
4378 Voigt
 14 May 1988
7696 Liebe
 10 May 1988
9938 Kretlow
 14 May 1988
17412 Kroll
 24 May 1988
29148 Palzer
 10 May 1988

He discovered seven minor planets including

9938 Kretlow and 4349 Tibúrcio at ESO's La Silla Observatory in northern Chile.[10][11]

He examined the properties,

curvature-defining geometric extensions. This makes plausible that the dimensions of the world increase proportionally to their elementary units, in a not-localizable manner, very classically and approximately corresponding to a radiation with a wavelength of about the world's size, keeping the biggest part of the world's energy, per each elementary space inclusive at any background or surface one such photon or information and a pressure canceling the gravitational deceleration of expansion [12]

Honours

In 1987, asteroid

3132 Landgraf was named after him.[13]

References

  1. ^ "Siegener Universitäts-Sternwarte" (PDF) (in German).
  2. ^ "1984MitAG..61..119. Page 123". articles.adsabs.harvard.edu.
  3. ^ "Nichtgravitative Kräfte beim Halleyschen Kometen".[permanent dead link]
  4. ^ "Summary: Report of IAU Commission 20". p. 196.
  5. ^ a b "MPC/MPO/MPS Archive". Retrieved 2023-11-05.
  6. ^ "ESLAB Symposium on the Exploration of Halley's Comet". pp. 289–294.
  7. ^ "Halley First Sighting Is 200 Years Older". Retrieved 2023-11-05.
  8. ISBN 979-10-90349-07-0
    .
  9. Bibcode:1985S&W....24...65L
    .
  10. ^ a b "Minor Planet Discoverers (by number)". Minor Planet Center. 23 May 2016. Retrieved 21 June 2016.
  11. ^ "Mitteilungen zur Astronomiegeschichte" (PDF) (in German). Retrieved 2023-11-05.
  12. ^ Welt und Wirkungsprinzip (2.Aufl. 2010) :
    ISBN 979-10-90349-02-5, 979-10-90349-01-8
    (pdf)
  13. ISBN 978-3-540-00238-3
    .

External links
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