Jansen (crater) explained
Jansen is a lunar impact crater in the north part of the Mare Tranquillitatis. The diameter is 24 km. It was named after 17th century Dutch optician Zacharias Janssen. It is located to the east-southeast of the crater Plinius. The rim of Jansen is low and narrow, with a notch along the western edge. The interior is relatively level, which may indicate it has been covered by lava. To the south-southwest a small but prominent crater lies on the crater floor, halfway between the center and the rim.
To the northwest of the rim is a rille named Rima Jansen, and to the east are wrinkle ridges in the mare surface. A low ridge runs from near the southeast rim in a southeasterly direction.
Satellite craters
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Jansen.
Jansen | Latitude | Longitude | Diameter |
---|
D | 15.7° N | 28.4° E | 7 km |
E | 14.5° N | 27.8° E | 7 km |
G | 9.3° N | 26.0° E | 6 km |
H | 11.4° N | 28.4° E | 7 km |
K | 11.5° N | 29.7° E | 6 km |
L | 14.7° N | 30.1° E | 7 km |
R | 15.2° N | 28.8° E | 25 km |
T | 11.4° N | 33.5° E | 5 km |
U | 11.9° N | 32.3° E | 4 km |
W | 10.2° N | 29.5° E | 3 km |
Y | 13.4° N | 28.6° E | 4 km | |
The following craters have been renamed by the IAU.
References
- Book: Andersson . L. E. . Whitaker . E. A. . Ewen Whitaker . 1982 . NASA Catalogue of Lunar Nomenclature . NASA RP-1097 .
- Book: Bussey . B. . Ben Bussey . Spudis . P. . Paul Spudis . 2004 . The Clementine Atlas of the Moon . . New York . 978-0-521-81528-4 .
- Book: Cocks . Elijah E. . Cocks . Josiah C. . 1995 . Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature . Tudor Publishers . 978-0-936389-27-1 .
- Web site: McDowell . Jonathan . July 15, 2007 . Lunar Nomenclature . . 2007-10-24 .
- Menzel. D. H.. Minnaert. M.. Levin. B.. Dollfus. A.. Bell. B.. Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU. 10.1007/BF00171763. Space Science Reviews. 12. 2. 136–186. 1971. 1971SSRv...12..136M. 122125855.
- Book: Moore
, Patrick
. Patrick Moore . 2001 . On the Moon . . 978-0-304-35469-6 .
- Book: Price
, Fred W.
. 1988 . The Moon Observer's Handbook . Cambridge University Press . 978-0-521-33500-3 .
- Book: Rükl
, Antonín
. Antonín Rükl . 1990 . Atlas of the Moon . . 978-0-913135-17-4 .
- Book: Webb
, Rev. T. W.
. Thomas William Webb . 1962 . Celestial Objects for Common Telescopes . 6th revised . Dover . 978-0-486-20917-3 .
- Book: Whitaker
, Ewen A.
. Ewen Whitaker . 1999 . Mapping and Naming the Moon . Cambridge University Press . 978-0-521-62248-6 .
- Book: Wlasuk
, Peter T.
. 2000 . Observing the Moon . Springer . 978-1-85233-193-1 .
External links
- LTO-60B2 Jansen - L&PI topographic map
- Web site: Wood . Chuck . January 15, 2007 . Stereo Jansen . Lunar Photo of the Day . 2007-01-15 . dead . https://web.archive.org/web/20070927004315/http://www.lpod.org/?m=20070115 . September 27, 2007 .