	British Astronomical Association Supporting amateur astronomers since 1890		Home	Login
			Help

Observation Summary for Variable Star X PER

Total observations:	14,937		Minimum magnitude:	6.900	Maximum magnitude:	5.600
First observation:	JD 2439816.400000	\	21 Nov 1967 21:36:00.000000 UT	Latest observation:	JD 2460626.520800	\	12 Nov 2024 00:29:57.120000 UT

Observation Method	Number of Observations
Visual	14,653
Photographic	22
CCD	41
CMOS	49
PEP	172

Back to Basic Summary

Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2024	67	13	9	7	4	0	0	1	5	15	11	2	0
2023	135	31	19	6	10	0	0	0	4	9	15	22	19
2022	176	39	21	31	7	0	0	3	7	13	18	15	22
2021	174	18	28	20	29	1	0	1	4	10	18	30	15
2020	211	19	19	21	13	1	0	5	6	32	38	26	31
2019	203	28	45	16	11	0	0	4	7	19	23	22	28
2018	209	34	35	13	5	2	0	5	11	19	34	23	28
2017	174	31	13	26	8	1	0	3	14	11	19	21	27
2016	249	33	54	41	10	1	0	3	17	12	17	33	28
2015	207	35	36	33	19	1	0	4	10	16	13	20	20
2014	257	37	38	40	15	0	0	12	17	16	21	26	35
2013	269	30	33	28	16	2	0	5	10	26	33	41	45
2012	268	49	39	56	11	0	0	3	7	19	16	32	36
2011	240	34	30	38	21	1	0	0	3	22	24	34	33
2010	224	38	27	32	16	0	0	1	17	19	23	23	28
2009	246	44	25	36	15	1	0	5	9	16	22	34	39
2008	224	29	40	19	12	1	0	3	9	23	31	27	30
2007	302	41	33	40	23	0	0	3	8	20	40	45	49
2006	248	39	39	17	19	0	0	9	6	18	22	49	30
2005	227	40	37	25	9	0	0	1	17	20	11	36	31
2004	249	37	41	24	14	0	0	3	10	17	33	31	39
2003	311	54	43	57	19	1	0	4	22	29	27	25	30
2002	289	51	44	43	30	0	0	3	11	14	25	37	31
2001	318	35	42	43	15	0	0	5	15	22	36	40	65
2000	323	48	53	48	17	1	0	4	17	22	33	43	37
1999	436	58	51	58	40	1	0	5	18	33	49	65	58
1998	442	69	56	44	27	4	2	5	27	34	53	59	62
1997	310	23	36	51	33	1	1	4	27	36	44	22	32
1996	175	9	30	8	13	1	0	9	10	16	21	31	27
1995	367	46	40	65	28	2	0	12	29	37	44	38	26
1994	428	74	50	55	35	0	0	6	16	34	63	37	58
1993	402	53	38	63	16	2	0	9	24	33	49	49	66
1992	443	50	42	31	20	0	0	8	47	41	67	70	67
1991	323	46	19	28	18	1	0	4	20	29	31	69	58
1990	265	47	46	34	21	0	0	7	8	21	22	24	35
1989	324	49	45	50	30	1	0	4	21	19	32	47	26
1988	433	65	67	46	38	0	0	5	15	37	50	62	48
1987	392	63	36	54	27	0	3	7	17	26	49	63	47
1986	487	57	52	75	26	0	1	7	19	46	79	60	65
1985	358	47	62	54	19	0	0	5	16	14	41	48	52
1984	358	53	38	29	32	0	0	6	20	27	63	39	51
1983	237	39	31	18	18	2	1	5	12	18	33	26	34
1982	220	37	31	36	13	0	0	5	7	21	23	22	25
1981	194	22	22	19	18	1	0	4	10	13	34	29	22
1980	192	24	9	23	14	0	0	4	13	14	18	36	37
1979	197	26	22	26	11	0	0	6	9	27	22	28	20
1978	167	19	22	27	8	0	0	3	8	12	24	29	15
1977	174	22	18	27	13	0	0	2	4	15	33	23	17
1976	214	25	25	25	20	0	0	12	18	14	26	32	17
1975	292	57	34	32	18	0	0	5	16	27	31	41	31
1974	329	44	35	25	23	0	0	10	30	26	37	56	43
1973	364	26	53	57	10	0	0	4	13	29	47	70	55
1972	198	21	11	8	8	0	0	2	15	17	35	43	38
1971	175	19	25	17	11	0	0	11	16	1	27	32	16
1970	198	8	19	33	10	0	0	5	5	15	32	33	38
1969	32	4	0	2	2	0	0	0	3	2	6	8	5
1968	5	1	2	1	0	0	0	0	0	0	1	0	0
1967	6	0	0	0	0	0	0	0	0	0	0	1	5