	British Astronomical Association Supporting amateur astronomers since 1890		Home	Login
			Help

Observation Summary for Variable Star U MON

Total observations:	11,187		Minimum magnitude:	8.500	Maximum magnitude:	5.200
First observation:	JD 2410997.000000	\	25 Dec 1888 12:00:00.000000 UT	Latest observation:	JD 2460978.593750	\	30 Oct 2025 02:15:00.000000 UT

Observation Method	Number of Observations
Visual	11,187

Back to Basic Summary

Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	91	19	24	27	15	0	0	0	0	3	3	0	0
2024	106	26	25	18	10	0	0	0	0	2	6	5	14
2023	129	27	27	14	23	0	0	0	0	3	7	11	17
2022	126	23	30	26	20	0	0	0	0	3	5	7	12
2021	125	18	29	26	28	4	3	0	0	2	3	4	8
2020	143	24	29	33	19	4	3	0	0	3	8	9	11
2019	148	31	38	34	10	4	3	1	0	2	9	5	11
2018	154	31	46	28	15	2	3	0	0	3	10	6	10
2017	161	37	24	36	22	3	0	0	0	3	6	12	18
2016	187	36	51	42	17	6	2	0	0	2	3	10	18
2015	190	36	42	39	27	5	2	0	0	7	7	5	20
2014	199	38	43	42	22	3	4	0	0	3	10	5	29
2013	174	25	30	31	28	6	3	0	0	1	8	12	30
2012	171	33	33	50	16	6	2	0	0	3	4	7	17
2011	150	26	27	37	21	5	3	0	0	4	5	7	15
2010	184	24	32	42	25	5	5	0	0	4	14	17	16
2009	186	38	33	42	23	7	4	0	0	2	4	13	20
2008	240	44	52	49	20	5	8	0	0	5	12	16	29
2007	225	43	32	51	29	4	5	0	0	5	7	11	38
2006	249	48	55	34	27	6	3	0	0	4	4	31	37
2005	178	36	37	31	23	7	6	0	0	2	3	12	21
2004	199	34	44	48	26	7	4	0	0	3	3	11	19
2003	272	59	63	61	31	6	6	0	0	4	5	14	23
2002	236	38	46	43	41	8	3	0	0	2	9	25	21
2001	236	39	42	43	29	8	7	1	0	4	6	14	43
2000	215	35	52	42	24	8	3	1	0	2	11	15	22
1999	183	31	40	40	17	0	0	0	0	3	11	11	30
1998	247	53	60	45	27	7	7	0	0	0	6	11	31
1997	209	23	36	55	35	6	5	1	1	3	20	8	16
1996	57	6	19	6	9	0	0	0	0	0	4	6	7
1995	281	45	59	87	44	9	4	1	0	4	8	9	11
1994	261	38	42	55	28	9	6	1	0	10	22	17	33
1993	197	34	26	53	20	9	5	0	0	7	8	10	25
1992	195	29	33	32	18	7	2	0	0	1	13	24	36
1991	192	42	38	42	23	3	2	0	0	2	8	12	20
1990	348	65	70	88	52	8	7	0	0	6	10	13	29
1989	304	63	79	69	25	5	0	0	0	2	9	30	22
1988	351	72	86	71	49	6	0	0	0	8	11	18	30
1987	304	52	49	70	45	6	0	0	1	11	21	19	30
1986	286	57	46	68	33	5	0	0	0	4	19	18	36
1985	321	54	70	71	46	8	0	0	0	4	20	21	27
1984	309	52	50	35	51	11	2	0	0	5	27	20	56
1983	342	53	68	70	41	15	1	0	0	7	30	16	41
1982	324	51	58	81	41	4	0	0	2	14	16	21	36
1981	268	47	55	36	33	7	0	0	0	12	24	22	32
1980	185	22	19	32	24	2	0	0	0	5	19	22	40
1979	83	12	16	16	3	0	0	0	0	4	8	10	14
1978	58	9	9	12	2	0	0	0	0	6	5	7	8
1977	52	10	12	17	7	0	0	0	0	0	0	0	6
1976	167	42	34	40	30	0	0	0	0	0	4	10	7
1975	226	62	37	49	21	0	0	0	0	5	8	19	25
1974	249	57	62	43	21	0	0	0	0	7	8	21	30
1973	215	24	53	60	18	1	0	0	0	0	6	21	32
1972	50	9	4	7	4	0	0	0	0	0	2	10	14
1971	33	2	11	10	2	0	0	0	0	0	1	2	5
1970	27	3	10	6	5	0	0	0	0	0	0	0	3
1969	58	11	16	14	11	0	0	0	0	0	1	0	5
1968	17	2	3	4	2	0	0	0	0	1	0	0	5
1967	26	3	4	7	1	0	0	0	0	1	2	0	8
1966	4	2	1	1	0	0	0	0	0	0	0	0	0
1965	22	5	5	11	1	0	0	0	0	0	0	0	0
1964	21	2	5	4	3	3	0	0	0	0	0	1	3
1896	18	4	4	7	3	0	0	0	0	0	0	0	0
1895	3	1	0	0	0	0	0	0	0	0	0	0	2
1892	8	1	2	5	0	0	0	0	0	0	0	0	0
1891	5	0	1	4	0	0	0	0	0	0	0	0	0
1890	3	0	2	1	0	0	0	0	0	0	0	0	0
1889	2	1	1	0	0	0	0	0	0	0	0	0	0
1888	2	0	0	0	0	0	0	0	0	0	0	0	2