Balmer (crater)

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The crater area in a Selenochromatic format Image (Si). More infos here : https://www.gawh.it/main/selenocromatica Hulmboldt Si.jpg
The crater area in a Selenochromatic format Image (Si). More infos here : https://www.gawh.it/main/selenocromatica
Balmer
BalmerCrater LRO.jpg
LRO image
Coordinates 20°06′N70°36′E / 20.1°N 70.6°E / 20.1; 70.6
Diameter 112 km
Depth None
Colongitude 288° at sunrise
Eponym Johann 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.

Contents

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.

BalmerLatitudeLongitudeDiameter
M20.7° S71.5° E5 km
N19.9° S69.9° E8 km
P20.4° S67.7° E13 km
Q18.7° S70.5° E7 km
R18.7° S69.1° E4 km
S18.4° S67.6° E6 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.