Year: 
1961

Mars on 1961 January 11/12 at 23:40-23:50 EST (04:40-04:50 UT) as sketched by Kenneth Chalk. C.M. 231°. 6" refractor at 150-220x. Seeing 6-5 (deteriorated)/10. Transparency 4/5. T = 0°.

Mars 196101120440