Arrhenius (lunar crater)
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This crater was named after Swedish chemist Svante Arrhenius by the IAU in 1970.
The outer wall of Arrhenius has been somewhat worn and eroded due to a history of minor impacts, leaving the rim rounded and low. There is a notch in the rim to the north-northwest, and an outward bulge along the southeast face. A small craterlet lies across the southwestern rim. The inner floor is relatively flat and free of features of interest. The midpoint lacks a central peak.
This crater lies within the Mendel-Rydberg Basin, a 630 km wide impact basin of Nectarian age.
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 Arrhenius.
The following craters have been renamed by the IAU.
- Arrhenius P — See Blanchard (crater).