Arend-Roland

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#581803
Paul Leyland
Participant

This the JPL ephemeris of Comet C/1956 R1 (Arend-Roland) for the night of 1957-05-19/20

 1957-May-19 21:00 A   07 03 54.81 +63 27 41.3
 1957-May-19 21:10 A   07 03 57.35 +63 27 39.2
 1957-May-19 21:20 A   07 03 59.89 +63 27 37.1
 1957-May-19 21:30     07 04 02.43 +63 27 35.0
 1957-May-19 21:40     07 04 04.97 +63 27 32.9
 1957-May-19 21:50     07 04 07.50 +63 27 30.8
 1957-May-19 22:00     07 04 10.05 +63 27 28.7
 1957-May-19 22:10     07 04 12.59 +63 27 26.5
 1957-May-19 22:20     07 04 15.13 +63 27 24.4
 1957-May-19 22:30     07 04 17.67 +63 27 22.3
 1957-May-19 22:40     07 04 20.21 +63 27 20.1
 1957-May-19 22:50     07 04 22.76 +63 27 18.0
 1957-May-19 23:00     07 04 25.30 +63 27 15.9

The crude position I gave earlier suggests that mid-exposure was close to 21:35 UT.

Lars: do you have precise postions for the other plates? If so, please post them and I’ll happily do the detective work.  If not. it will take me a little time.