Balmer
LRO image
Coordinates20°06′N 70°36′E / 20.1°N 70.6°E / 20.1; 70.6
Diameter112 km
DepthNone
Colongitude288° at sunrise
EponymJohann J. Balmer

Balmer is the lava-flooded remains of a lunar impact crater. Only the heavily worn southern and eastern sections of the crater still survive; the remainder being overlaid by a lava flow that joins to the nearby mare. Balmer lies to the east-southeast of the crater Vendelinus.

Balmer was considered a Constellation Region of Interest.[1] Light plains deposits overly mare basalt, as evidenced by multiple dark-halo craters.[2]

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 Balmer.

Balmer Latitude Longitude Diameter
M 20.7° S 71.5° E 5 km
N 19.9° S 69.9° E 8 km
P 20.4° S 67.7° E 13 km
Q 18.7° S 70.5° E 7 km
R 18.7° S 69.1° E 4 km
S 18.4° S 67.6° E 6 km

References

  1. ↑ Two-toned Impact Crater in Balmer Basin: A Reflection of the Target?, Lunar Reconnaissance Orbiter Camera article, 26 March 2010.
  2. ↑ Hawke, B. R., J. J. Gillis, T. A. Giguere, D. T. Blewett, D. J. Lawrence, P. G. Lucey, G. A. Smith, P. D. Supdis, G. J. Taylor (2005) Remote sensing and geologic studies of the Balmer-Kapteyn region of the Moon, Journal of Geophysical Research, 110. doi:10.1029/2004JE00283.
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