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Observation Summary for Variable Star TU CVN

Total observations:	7,562		Minimum magnitude:	6.600	Maximum magnitude:	5.200
First observation:	JD 2440230.597000	\	9 Jan 1969 02:19:40.800000 UT	Latest observation:	JD 2460970.358000	\	21 Oct 2025 20:35:31.200000 UT

Observation Method	Number of Observations
Visual	7,373
CCD	30
CMOS	25
PEP	134

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Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	71	6	8	10	8	9	6	6	6	8	4	0	0
2024	79	6	6	13	7	6	9	7	10	2	7	2	4
2023	90	8	8	14	10	8	9	8	8	6	2	4	5
2022	132	14	11	17	12	11	9	8	13	14	9	5	9
2021	99	9	9	8	14	12	8	9	5	10	5	8	2
2020	133	10	12	18	15	20	9	11	9	13	6	6	4
2019	101	9	12	11	10	9	6	9	8	9	8	5	5
2018	127	12	12	10	14	15	11	13	13	12	8	3	4
2017	110	13	11	12	7	12	8	8	11	9	5	7	7
2016	107	13	13	11	11	12	7	9	7	3	6	8	7
2015	104	14	17	14	9	7	6	6	6	7	5	5	8
2014	142	13	15	14	14	11	8	15	14	10	10	8	10
2013	131	8	10	14	13	12	8	14	13	10	10	9	10
2012	135	14	13	22	12	14	5	12	12	10	7	7	7
2011	123	10	10	14	13	13	10	9	9	11	10	7	7
2010	101	9	10	11	10	9	8	8	8	5	9	8	6
2009	138	12	5	15	17	14	10	12	12	11	8	8	14
2008	109	10	9	9	10	8	15	7	3	10	10	9	9
2007	103	10	6	11	11	9	8	8	6	10	10	5	9
2006	120	9	10	8	11	11	10	16	13	7	7	10	8
2005	89	7	5	8	5	9	9	6	12	9	4	6	9
2004	85	7	11	8	5	10	6	6	8	7	9	5	3
2003	108	9	6	15	11	11	6	8	11	9	9	5	8
2002	88	7	6	7	10	12	4	10	9	5	7	6	5
2001	140	11	11	13	15	16	9	9	13	9	13	9	12
2000	174	12	15	27	17	17	8	13	17	16	12	11	9
1999	176	17	15	18	15	11	15	21	15	16	14	8	11
1998	196	26	20	18	20	13	14	14	23	13	13	11	11
1997	170	8	21	25	20	22	9	8	9	11	16	12	9
1996	144	2	16	7	14	11	19	19	16	12	9	8	11
1995	230	14	21	32	23	29	17	22	27	16	12	9	8
1994	212	10	12	21	14	25	24	19	22	24	21	8	12
1993	161	13	15	21	13	19	13	11	16	10	12	6	12
1992	127	12	12	11	14	13	4	15	11	6	8	10	11
1991	145	18	14	21	17	10	7	9	14	14	6	10	5
1990	136	10	14	18	16	17	8	11	7	11	8	6	10
1989	170	18	20	20	15	23	18	15	11	9	9	7	5
1988	210	14	16	22	20	26	20	25	16	15	12	15	9
1987	236	16	18	27	30	28	13	18	23	20	18	13	12
1986	188	12	12	18	17	24	14	16	13	22	19	10	11
1985	178	11	15	21	22	19	9	12	21	12	16	10	10
1984	193	14	11	12	33	23	17	19	18	10	17	10	9
1983	141	13	15	25	20	17	13	10	10	6	4	4	4
1982	210	12	18	40	25	22	13	21	22	21	7	5	4
1981	234	10	15	15	25	27	15	25	38	19	22	11	12
1980	132	10	6	12	18	17	7	12	11	9	11	8	11
1979	86	10	6	10	8	10	5	6	1	7	3	8	12
1978	54	5	3	8	6	9	4	5	5	3	4	2	0
1977	82	5	4	8	11	10	4	10	7	11	8	3	1
1976	120	8	7	11	18	11	8	15	18	4	6	12	2
1975	225	18	13	19	22	24	26	24	27	24	11	10	7
1974	252	21	20	17	24	24	14	28	33	27	19	12	13
1973	172	4	11	22	16	13	17	18	18	13	10	10	20
1972	23	0	0	0	0	0	0	5	7	5	2	2	2
1970	10	1	1	1	1	3	1	1	0	0	0	0	1
1969	10	2	0	3	1	0	2	1	1	0	0	0	0