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Observation Summary for Variable Star V509 CAS

Total observations:	826		Minimum magnitude:	6.000	Maximum magnitude:	4.800
First observation:	JD 2446613.493000	\	1 Jul 1986 23:49:55.200000 UT	Latest observation:	JD 2460936.451000	\	17 Sep 2025 22:49:26.400000 UT

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	2	1	0	0	0	0	0	0	0	1	0	0	0
2024	11	0	0	0	0	0	0	0	1	0	0	10	0
2023	12	0	1	0	1	0	3	1	1	2	1	1	1
2022	4	3	0	0	0	0	0	0	0	0	0	0	1
2021	3	2	0	0	0	0	0	0	0	0	0	1	0
2020	30	2	3	2	3	4	2	2	2	4	2	2	2
2019	23	0	3	1	1	1	2	1	2	3	3	3	3
2018	23	1	2	3	1	2	3	3	4	3	1	0	0
2017	26	3	3	1	1	1	2	2	2	3	2	4	2
2016	32	2	4	3	4	3	1	3	2	2	3	4	1
2015	38	4	3	1	3	2	4	4	3	3	4	3	4
2014	40	3	5	2	2	3	2	5	4	4	3	3	4
2013	41	4	4	4	3	2	2	4	4	3	3	4	4
2012	81	13	11	9	2	6	1	2	7	10	7	7	6
2011	50	3	1	3	4	2	4	0	3	4	2	11	13
2010	29	3	0	2	3	2	3	3	4	2	3	2	2
2009	33	3	2	1	4	3	4	4	4	2	3	1	2
2008	40	3	3	4	4	3	2	5	3	3	3	3	4
2007	28	2	1	3	2	2	2	2	2	4	3	2	3
2006	38	3	3	3	3	3	2	3	4	4	3	4	3
2005	32	2	2	1	3	3	4	3	4	2	2	3	3
2004	28	2	3	2	2	3	3	3	2	4	1	1	2
2003	37	3	3	3	3	4	3	3	3	3	3	2	4
2002	26	2	1	2	1	1	2	3	2	3	2	4	3
2001	34	3	3	2	2	3	3	3	3	2	4	2	4
2000	22	2	0	1	2	3	1	3	4	2	2	1	1
1999	20	1	1	0	0	0	0	2	4	4	3	4	1
1998	17	0	0	0	0	0	3	2	3	3	1	3	2
1995	5	3	2	0	0	0	0	0	0	0	0	0	0
1988	1	1	0	0	0	0	0	0	0	0	0	0	0
1987	7	1	0	2	0	1	0	0	0	1	2	0	0
1986	13	0	0	0	0	0	0	1	0	2	3	3	4