Jansen (Crater)

Jansen
	Apollo 17 Mapping Camera image
Diameter	24 km
Depth	0.6 km
Colongitude	351° at sunrise

Short description: Impact crater

Oblique view from Apollo 15

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

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

↑ "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. https://archive.org/details/isbn_9780936389271.
McDowell, Jonathan (July 15, 2007). "Lunar Nomenclature". Jonathan's Space Report. http://host.planet4589.org/astro/lunar/.
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. doi:10.1007/BF00171763. Bibcode: 1971SSRv...12..136M.
Moore, Patrick (2001). On the Moon. Sterling Publishing Co. ISBN 978-0-304-35469-6. https://archive.org/details/patrickmooreonmo00patr.
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. https://archive.org/details/celestialobjects00webb.
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

LTO-60B2 Jansen — L&PI topographic map
Wood, Chuck (January 15, 2007). "Stereo Jansen". Lunar Photo of the Day. http://www.lpod.org/?m=20070115.

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[1] "Jansen (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.