Jansen (crater)

Not to be confused with Janssen (lunar crater).

Jansen

Apollo 17 Mapping Camera image
Diameter	23 km
Depth	0.6 km
Colongitude	351° at sunrise
Eponym	Zacharias Janssen

Oblique view from Apollo 15

Jansen is a lunar crater in the north part of the Mare Tranquillitatis. 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.

• Jansen B — See Carrel.
• Jansen C — See Beketov.
• Jansen F — See Cajal.

• 
  Jansen L
• 
  Oblique view of the ghost crater Jansen R ("pancake" at center) and Jansen D crater (lower right)

References

• Wood, Chuck (January 15, 2007). "Stereo Jansen". Lunar Photo of the Day. Archived from the original on September 27, 2007. Retrieved 2007-01-15. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)

• Andersson, L. E.; Whitaker, E. A. (1982). NASA Catalogue of Lunar Nomenclature. NASA RP-1097. {{cite book}}: Invalid |ref=harv (help)
• Blue, Jennifer (July 25, 2007). "Gazetteer of Planetary Nomenclature". USGS. Retrieved 2007-08-05. {{cite web}}: Invalid |ref=harv (help)
• Bussey, B.; Spudis, P. (2004). The Clementine Atlas of the Moon. New York: Cambridge University Press. ISBN 978-0-521-81528-4. {{cite book}}: Invalid |ref=harv (help)
• 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. {{cite book}}: Invalid |ref=harv (help)
• McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. Retrieved 2007-10-24. {{cite web}}: Invalid |ref=harv (help)
• 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. {{cite journal}}: Invalid |ref=harv (help)
• Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6. {{cite book}}: Invalid |ref=harv (help)
• Price, Fred W. (1988). The Moon Observer's Handbook. Cambridge University Press. ISBN 978-0-521-33500-3. {{cite book}}: Invalid |ref=harv (help)
• Rükl, Antonín (1990). Atlas of the Moon. Kalmbach Books. ISBN 978-0-913135-17-4. {{cite book}}: Invalid |ref=harv (help)
• Webb, Rev. T. W. (1962). Celestial Objects for Common Telescopes (6th revised ed.). Dover. ISBN 978-0-486-20917-3. {{cite book}}: Invalid |ref=harv (help)
• Whitaker, Ewen A. (1999). Mapping and Naming the Moon. Cambridge University Press. ISBN 978-0-521-62248-6. {{cite book}}: Invalid |ref=harv (help)
• Wlasuk, Peter T. (2000). Observing the Moon. Springer. ISBN 978-1-85233-193-1. {{cite book}}: Invalid |ref=harv (help)