Observation Star Summary for J W Mason

Total observations:315Number of uploaded data files:1
First observation:JD 2440922.300000\1 Dec 1970 19:12:00 UTLatest observation:JD 2442719.260000\2 Nov 1975 18:14:24 UT
Observation MethodNumber of Observations
Visual315

Summary by Year and Month

Summary by Stars