Image processing and analysis by Martin Nicholson and Hannah Varley and with thanks to the American Association of Variable Star Observers.
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RR CRB
Link to VSX entry.
RR CRB is listed as a SRB type variable star with a period of 60.8 days. My observations show a magnitude range of 7.43 - 7.72, rather narrower than the quoted values of 8.4 - 10.1 p. It was about 42 days between successive minima.
RS CRB
Link to VSX entry.
RS CRB is listed as a SRA type variable star with a period of 332.2 days. My data suggests a much shorter period.
NEEDS FURTHER INVESTIGATION IN 2008 SEASON
RU CRB
Link to VSX entry.
RU CRB is listed as a SRA variable star with a period of 436 days but the positionally matching variable star ASAS 153537+2545.2 is listed with a period of 48 days - this matches my results rather more closely although still some way from my estimated period of about 60 days.
NEEDS FURTHER INVESTIGATION IN 2008 SEASON
ST CRB
Link to VSX entry.
ST CRB is listed as a LB variable star.
SY CRB
Link to VSX entry.
ST CRB is listed as a LB variable star.
Y CRB
Link to VSX entry.
Y CRB is listed as a SRB variable star with a period of 300 days.
Martin Nicholson - Daventry, United Kingdom.
This page was last updated on October 10th 2007.