Jansen (crater)
![]() Apollo 17 Mapping Camera image | |
Coordinates | 13°30′N 28°42′E / 13.5°N 28.7°E |
---|---|
Diameter | 24 km |
Depth | 0.6 km |
Colongitude | 351° at sunrise |
Eponym | Zacharias Janssen |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Posidonius-Agrippa_Si_-_Aldo_Ferruggia.jpg/220px-Posidonius-Agrippa_Si_-_Aldo_Ferruggia.jpg)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/0/05/Jansen_crater_AS15-81-10952.jpg/220px-Jansen_crater_AS15-81-10952.jpg)
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.[1] 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
[edit]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.
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Jansen L
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Oblique view of the ghost crater Jansen R ("pancake" at center) and Jansen D crater (lower right)
References
[edit]- ^ "Jansen (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
- Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097.
- Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4.
- Cocks, Elijah E.; Cocks, Josiah C. (1995). Who's Who on the Moon: A Biographical Dictionary of Lunar Nomenclature. Tudor Publishers. ISBN 978-0-936389-27-1.
- McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24.
- Menzel, D. H.; Minnaert, M.; Levin, B.; Dollfus, A.; Bell, B. (1971). "Report on Lunar Nomenclature by the Working Group of Commission 17 of the IAU". Space Science Reviews. 12 (2): 136–186. Bibcode:1971SSRv...12..136M. doi:10.1007/BF00171763. S2CID 122125855.
- Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6.
- Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3.
- Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4.
- Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3.
- Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6.
- Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1.
External links
[edit]![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
- LTO-60B2 Jansen — L&PI topographic map
- Wood, Chuck (January 15, 2007). "Stereo Jansen". Lunar Photo of the Day. Archived from the original on September 27, 2007. Retrieved 2007-01-15.