Rolling Hills Observatory

RR Lyrae Ephemeris Generator

Enter the date and location for the ephemeris:

Year:
Month:
Day:
Time zone:

Longitude (east positive):
Latitude (north positive):

Select maximum sun elevation (degrees):
(Nautical twilight = -12, astronomical twilight = -18):

Select program(s):

Select the mode:

Select filters:
Maximum declination: Minimum declination:
Maximum magnitude: Minimum magnitude:

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