	British Astronomical Association Supporting amateur astronomers since 1890		Home	Login
			Help

Observation Summary for Variable Star Z UMA

Total observations:	14,061		Minimum magnitude:	10.000	Maximum magnitude:	5.300
First observation:	JD 2433176.434000	\	16 Sep 1949 22:24:57.600000 UT	Latest observation:	JD 2460446.496530	\	15 May 2024 23:55:00.192000 UT

Observation Method	Number of Observations
Visual	12,562
Photographic	24
DSLR	744
CCD	84
CMOS	647

Back to Basic Summary

Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2024	164	56	43	30	30	5	0	0	0	0	0	0	0
2023	597	57	84	43	61	75	49	40	33	36	33	55	31
2022	599	46	78	115	117	36	37	15	24	17	28	38	48
2021	371	28	48	51	56	32	24	24	15	26	27	21	19
2020	528	25	39	58	72	119	27	31	25	40	23	35	34
2019	354	42	39	35	30	23	18	19	33	33	33	19	30
2018	345	20	31	26	22	37	31	34	31	31	37	24	21
2017	290	29	21	31	22	24	18	21	33	27	20	24	20
2016	313	33	40	30	29	20	15	29	29	21	21	24	22
2015	332	34	31	31	23	28	23	22	21	32	23	37	27
2014	351	37	28	33	50	40	16	29	26	18	25	20	29
2013	311	22	16	28	27	32	24	29	23	23	28	27	32
2012	323	33	27	47	24	42	22	15	21	26	16	26	24
2011	354	20	25	41	46	39	33	25	18	34	24	26	23
2010	242	13	19	24	31	21	17	15	19	20	27	21	15
2009	288	29	23	36	34	29	17	20	19	21	19	23	18
2008	256	24	25	30	27	24	24	15	10	19	20	20	18
2007	219	19	23	29	23	19	11	15	10	16	16	13	25
2006	260	22	22	17	29	25	16	18	27	18	19	26	21
2005	236	21	20	21	22	18	16	12	23	21	18	24	20
2004	234	22	21	27	23	13	14	13	16	22	22	19	22
2003	259	30	30	33	19	18	10	18	26	23	27	10	15
2002	209	18	24	23	22	12	10	13	19	13	18	17	20
2001	214	17	19	20	19	13	12	16	18	15	20	20	25
2000	209	16	22	15	16	20	10	14	20	20	23	13	20
1999	213	17	17	11	20	17	15	16	18	21	25	16	20
1998	277	36	29	19	24	22	16	13	27	20	22	25	24
1997	171	8	12	17	14	14	11	9	17	17	20	17	15
1996	104	1	10	4	7	5	13	12	15	13	12	8	4
1995	222	10	18	26	21	22	16	15	29	19	19	14	13
1994	177	18	10	18	14	10	17	16	18	14	23	7	12
1993	191	18	12	26	20	20	14	14	21	12	14	8	12
1992	221	13	16	18	17	22	8	15	21	20	25	25	21
1991	213	25	18	23	19	11	12	9	23	21	12	22	18
1990	253	26	22	28	23	19	12	21	23	20	23	16	20
1989	264	28	26	33	22	28	17	22	18	21	16	19	14
1988	293	25	31	28	29	30	14	21	29	23	24	17	22
1987	250	19	20	23	29	26	14	13	26	20	18	20	22
1986	272	25	29	36	23	28	17	17	16	25	21	15	20
1985	218	22	18	25	24	16	17	16	16	14	19	13	18
1984	240	18	15	17	29	21	17	20	17	20	26	18	22
1983	203	17	19	22	23	20	16	8	19	13	19	13	14
1982	209	14	15	19	21	20	7	22	27	28	13	8	15
1981	199	19	14	13	20	15	11	16	22	17	24	14	14
1980	194	12	11	21	27	21	8	12	17	22	12	13	18
1979	118	9	8	11	15	16	3	6	10	14	8	7	11
1978	103	21	11	10	11	9	5	1	5	5	5	7	13
1977	120	10	7	13	11	9	6	8	10	14	17	8	7
1976	153	12	13	18	19	16	15	12	14	6	11	12	5
1975	285	26	21	31	22	29	32	19	26	32	16	17	14
1974	348	22	26	23	21	27	19	33	48	50	37	25	17
1973	293	16	23	36	15	16	20	25	45	40	17	17	23
1972	118	6	2	7	18	13	8	12	18	11	8	10	5
1971	244	14	17	20	36	27	10	33	33	11	14	18	11
1970	18	3	2	2	3	4	1	2	0	0	0	0	1
1969	11	0	0	1	1	0	2	1	1	1	0	4	0
1950	2	0	1	0	1	0	0	0	0	0	0	0	0
1949	6	0	0	0	0	0	0	0	0	2	2	1	1