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Observation Summary for Variable Star S UMI

Total observations:	7,432		Minimum magnitude:	13.100	Maximum magnitude:	6.600
First observation:	JD 2418982.000000	\	6 Nov 1910 12:00:00.000000 UT	Latest observation:	JD 2460815.661550	\	20 May 2025 03:52:37.920000 UT

Observation Method	Number of Observations
Visual	7,367
CCD	52
CMOS	13

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Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	5	1	0	0	0	4	0	0	0	0	0	0	0
2024	4	0	1	0	0	0	0	0	0	3	0	0	0
2023	6	1	0	0	1	0	1	0	0	0	0	0	3
2022	12	5	0	5	0	0	0	0	0	1	1	0	0
2021	23	4	5	1	3	1	0	0	0	0	4	0	5
2020	42	2	3	4	5	6	2	1	4	1	4	5	5
2019	6	2	1	0	0	1	0	0	0	0	0	0	2
2018	19	1	2	3	1	3	2	2	4	1	0	0	0
2008	3	0	0	0	0	0	0	2	1	0	0	0	0
2006	1	0	0	0	0	0	0	0	0	0	0	0	1
2002	2	0	0	0	0	0	1	1	0	0	0	0	0
2000	5	0	2	0	0	0	0	0	2	0	1	0	0
1998	7	1	0	2	0	0	0	0	0	1	0	1	2
1997	13	0	0	0	0	0	0	0	2	6	3	1	1
1996	4	0	0	0	0	0	0	0	2	0	2	0	0
1974	110	14	12	6	10	8	7	15	11	14	5	4	4
1973	244	13	15	22	8	14	20	10	27	28	32	32	23
1972	101	8	3	9	6	7	4	6	12	5	14	19	8
1971	115	5	7	4	9	12	7	9	10	15	14	15	8
1970	22	0	1	2	1	3	3	3	0	3	0	3	3
1969	36	1	1	3	3	0	4	2	4	7	5	5	1
1968	77	1	1	8	5	4	11	14	12	12	3	4	2
1967	78	2	6	10	8	6	5	5	10	10	9	4	3
1966	77	5	4	6	9	11	7	7	9	5	6	4	4
1965	116	12	3	8	8	8	16	11	14	8	8	8	12
1964	103	6	5	5	7	6	5	4	9	12	15	11	18
1963	103	6	7	14	6	7	3	10	10	6	11	11	12
1962	89	7	6	6	9	8	8	7	8	8	9	5	8
1961	52	0	1	4	4	8	4	1	7	3	9	5	6
1960	29	2	4	4	3	4	4	2	0	1	1	3	1
1959	25	0	1	2	1	0	1	4	0	5	5	2	4
1958	17	2	0	2	3	3	1	1	3	0	1	0	1
1957	20	1	1	4	1	2	2	1	2	1	2	1	2
1956	13	3	0	2	2	2	0	0	1	1	0	1	1
1955	38	2	2	3	4	4	1	5	3	6	4	2	2
1954	19	1	1	2	5	1	0	0	1	1	3	2	2
1953	46	2	6	5	8	6	0	5	3	4	5	1	1
1952	52	4	2	1	8	4	5	6	3	6	7	3	3
1951	48	2	3	3	4	3	4	3	6	5	6	5	4
1950	51	3	7	5	4	2	2	3	9	4	3	5	4
1948	56	4	2	5	8	6	4	2	4	6	7	5	3
1946	91	3	6	7	8	5	6	6	5	8	8	13	16
1945	93	3	9	12	9	7	3	7	11	7	15	4	6
1944	12	1	0	1	2	2	0	0	0	2	1	0	3
1943	26	0	0	1	1	5	4	2	7	3	0	2	1
1941	12	4	5	3	0	0	0	0	0	0	0	0	0
1940	109	13	5	11	11	15	9	8	11	7	8	4	7
1939	183	12	14	19	21	16	14	13	16	13	12	16	17
1938	161	12	11	20	19	11	4	12	13	12	19	14	14
1937	118	13	15	8	8	7	9	6	10	11	9	12	10
1936	105	11	14	8	6	5	6	4	10	7	8	14	12
1935	124	8	13	10	12	6	9	9	12	10	12	12	11
1934	191	21	18	22	18	21	10	14	16	17	10	10	14
1933	241	15	15	29	28	21	12	20	27	21	20	15	18
1932	213	15	17	28	21	19	20	16	20	14	18	9	16
1931	241	16	14	26	20	25	14	10	18	24	32	26	16
1930	198	23	16	17	14	11	15	8	13	19	20	23	19
1929	269	15	14	32	23	20	13	24	19	39	25	20	25
1928	256	25	28	24	18	14	11	21	18	29	23	21	24
1927	244	18	19	19	22	13	12	18	25	29	28	23	18
1926	197	17	10	20	17	15	13	11	14	20	16	23	21
1925	207	16	17	22	21	15	25	15	9	17	17	19	14
1924	200	13	18	25	18	23	18	18	15	14	10	13	15
1923	152	11	7	13	19	14	9	15	12	17	15	8	12
1922	175	11	19	16	11	16	10	14	14	16	24	13	11
1921	236	14	16	25	20	13	16	19	26	32	24	17	14
1920	241	21	24	26	11	17	14	11	20	27	29	25	16
1919	198	15	10	10	10	16	16	12	16	24	30	20	19
1918	141	12	9	12	8	11	6	9	12	15	12	18	17
1917	139	10	13	14	14	8	10	11	7	13	12	12	15
1916	131	12	10	11	12	14	7	9	10	9	16	11	10
1915	123	5	8	5	9	11	10	15	13	14	9	14	10
1914	119	7	9	8	18	15	11	14	10	10	3	8	6
1913	168	14	7	8	6	26	24	15	8	21	14	14	11
1912	138	4	2	11	11	8	12	11	14	12	18	14	21
1911	84	8	3	4	3	10	8	11	11	7	8	2	9
1910	7	0	0	0	0	0	0	0	0	0	0	3	4