	British Astronomical Association Supporting amateur astronomers since 1890		Home	Login
			Help

Observation Summary for Variable Star TZ PER

Total observations:	18,734		Minimum magnitude:	15.700	Maximum magnitude:	10.300
First observation:	JD 2436578.305500	\	9 Jan 1959 19:19:55.200000 UT	Latest observation:	JD 2460978.453500	\	29 Oct 2025 22:53:02.400000 UT

Observation Method	Number of Observations
Visual	18,182
CCD	547
DSLR	5

Back to Basic Summary

Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	90	15	14	26	8	0	0	3	12	9	3	0	0
2024	103	15	10	11	1	0	0	4	19	12	18	9	4
2023	139	26	19	8	5	0	1	4	18	16	14	16	12
2022	229	38	35	30	5	0	2	12	31	17	26	17	16
2021	167	14	24	18	18	0	0	2	11	20	27	18	15
2020	185	33	19	24	10	2	8	9	7	29	17	12	15
2019	234	29	38	32	3	0	1	7	26	37	29	11	21
2018	279	27	53	14	7	4	6	15	27	32	45	29	20
2017	196	34	16	32	9	1	2	5	21	14	26	19	17
2016	297	30	40	54	10	1	0	11	31	30	29	33	28
2015	252	30	35	31	21	3	2	7	20	42	24	23	14
2014	273	28	27	33	14	2	1	15	26	27	32	27	41
2013	212	21	20	14	18	3	3	13	10	28	31	22	29
2012	364	45	26	34	11	9	1	9	18	21	11	94	85
2011	190	28	17	17	14	5	6	8	11	22	21	22	19
2010	308	42	26	45	36	10	7	4	28	23	38	27	22
2009	324	35	21	37	30	18	7	21	33	26	23	31	42
2008	291	38	46	22	12	7	13	12	12	38	50	21	20
2007	307	39	27	25	19	11	5	10	29	35	34	35	38
2006	424	26	27	16	8	2	7	19	16	17	40	225	21
2005	288	36	76	19	16	5	5	5	27	30	10	29	30
2004	300	33	26	14	13	3	5	5	22	39	89	21	30
2003	411	62	58	54	23	1	1	12	31	49	47	32	41
2002	234	31	31	22	25	8	2	9	17	25	18	31	15
2001	284	42	30	25	16	7	2	11	28	18	28	33	44
2000	525	64	71	54	21	8	5	19	56	52	55	58	62
1999	530	57	54	44	22	4	21	35	37	60	77	49	70
1998	413	54	39	20	20	8	7	12	52	40	53	64	44
1997	331	27	32	36	20	18	9	24	27	38	48	26	26
1996	291	12	33	3	12	7	9	33	30	34	35	43	40
1995	467	63	39	66	18	6	5	38	72	43	52	42	23
1994	366	48	38	31	19	3	10	25	33	37	48	20	54
1993	297	28	18	35	5	3	5	21	29	35	44	30	44
1992	261	27	31	16	11	1	3	16	26	22	34	38	36
1991	306	50	22	20	13	3	9	10	35	35	32	39	38
1990	386	49	38	42	25	10	2	28	28	30	45	45	44
1989	460	61	52	38	17	8	9	20	58	36	62	74	25
1988	623	72	77	38	46	21	13	16	47	92	78	71	52
1987	612	57	35	59	36	29	12	33	71	76	79	71	54
1986	498	35	33	42	34	18	22	24	28	58	70	60	74
1985	267	22	28	26	25	6	8	22	34	21	29	24	22
1984	342	45	27	13	38	3	21	29	28	29	41	28	40
1983	397	44	56	40	28	6	9	16	38	31	50	33	46
1982	384	22	24	52	22	3	6	19	38	66	33	46	53
1981	322	37	40	15	23	9	11	16	33	62	35	26	15
1980	424	32	28	31	34	31	9	15	25	56	57	59	47
1979	321	30	33	30	10	13	7	14	35	59	36	30	24
1978	159	25	8	20	7	3	3	4	15	15	17	28	14
1977	172	6	13	14	18	8	4	7	25	33	19	12	13
1976	318	36	13	32	29	4	12	32	60	22	17	38	23
1975	356	51	24	33	14	7	9	9	31	46	57	41	34
1974	433	39	37	35	27	20	15	33	47	56	34	53	37
1973	544	26	52	63	18	4	16	19	45	65	88	86	62
1972	309	16	33	36	16	0	6	14	39	27	42	52	28
1971	407	24	39	25	13	7	7	32	46	68	76	53	17
1970	255	10	21	12	3	6	1	21	30	40	33	41	37
1969	181	13	7	7	4	1	5	8	21	18	37	47	13
1968	178	8	9	15	5	6	18	13	30	34	12	14	14
1967	27	0	0	1	0	0	0	0	0	0	5	9	12
1966	1	1	0	0	0	0	0	0	0	0	0	0	0
1965	7	3	0	2	0	0	0	0	0	1	0	0	1
1964	9	0	0	0	0	0	0	1	1	4	1	0	2
1963	3	0	1	0	1	0	0	0	0	0	1	0	0
1962	22	3	1	2	0	0	0	0	0	4	9	2	1
1961	19	0	2	6	0	0	0	0	2	1	5	2	1
1960	18	4	7	4	2	0	0	0	0	0	0	1	0
1959	112	10	8	12	7	9	1	9	7	19	14	7	9