	British Astronomical Association Supporting amateur astronomers since 1890		Home	Login
			Help

Observation Summary for Variable Star GK PER

Total observations:	16,084		Minimum magnitude:	16.143	Maximum magnitude:	7.800
First observation:	JD 2439370.395800	\	1 Sep 1966 21:29:57.120000 UT	Latest observation:	JD 2460626.501400	\	12 Nov 2024 00:02:00.960000 UT

Observation Method	Number of Observations
Visual	10,617
Photographic	20
CCD	5,378
CMOS	69

Back to Basic Summary

Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2024	152	37	33	25	5	0	0	1	12	19	17	3	0
2023	1,333	338	863	9	20	0	2	1	13	24	15	30	18
2022	321	63	38	58	12	0	2	10	26	15	36	25	36
2021	196	15	25	27	15	0	0	1	6	19	45	23	20
2020	234	40	25	38	12	0	0	11	13	28	23	22	22
2019	230	40	47	31	2	0	0	2	13	25	22	16	32
2018	856	27	34	13	4	0	0	7	414	256	48	31	22
2017	180	37	13	33	8	0	0	2	8	17	19	20	23
2016	242	28	41	38	9	0	0	3	23	24	18	31	27
2015	433	27	30	186	53	4	0	3	12	28	53	19	18
2014	426	26	29	40	12	0	0	5	11	14	242	20	27
2013	213	19	19	34	29	0	0	5	11	18	25	23	30
2012	214	35	22	39	10	0	0	5	10	24	13	28	28
2011	158	23	14	25	16	0	2	2	4	18	20	19	15
2010	1,949	50	21	1,457	311	2	1	5	22	17	29	18	16
2009	271	33	18	61	22	1	0	8	23	16	20	29	40
2008	248	30	52	25	6	0	0	3	7	33	45	22	25
2007	730	42	547	29	18	0	0	4	8	12	19	23	28
2006	171	21	28	19	8	0	0	7	6	7	22	34	19
2005	390	111	30	20	12	0	0	1	11	13	4	147	41
2004	678	31	20	13	8	0	1	2	6	16	166	197	218
2003	229	43	36	44	12	0	0	6	17	15	20	15	21
2002	183	25	34	33	31	1	0	4	5	9	12	19	10
2001	177	31	27	22	11	0	1	7	13	8	14	15	28
2000	419	60	70	54	17	1	0	8	33	31	41	51	53
1999	409	49	56	60	40	2	0	9	19	22	55	43	54
1998	286	44	34	22	9	2	1	8	25	24	36	40	41
1997	249	20	26	27	13	8	4	15	21	34	41	17	23
1996	255	14	57	27	30	1	1	15	15	20	25	25	25
1995	338	46	31	61	13	0	2	12	27	38	44	43	21
1994	249	38	29	26	16	0	1	9	16	19	41	16	38
1993	164	19	10	32	3	0	2	7	14	16	26	15	20
1992	207	25	29	17	11	0	1	18	17	12	26	25	26
1991	210	38	23	19	12	0	3	3	20	19	21	24	28
1990	249	38	34	41	17	1	0	13	13	12	26	25	29
1989	320	41	36	34	12	1	0	8	40	33	38	55	22
1988	458	54	59	32	37	2	0	25	44	61	59	52	33
1987	389	47	25	45	24	3	0	10	52	55	55	45	28
1986	235	16	15	23	12	2	0	7	6	16	34	41	63
1985	99	12	16	14	12	0	2	5	5	7	10	10	6
1984	160	25	15	8	14	0	2	4	7	11	28	21	25
1983	177	23	21	24	15	1	0	4	21	10	19	18	21
1982	181	18	17	39	11	0	1	2	10	15	19	21	28
1981	193	20	30	24	26	1	0	9	19	19	15	19	11
1980	150	14	10	12	5	0	1	4	11	17	27	29	20
1979	131	15	15	12	4	0	2	4	10	14	20	17	18
1978	106	10	7	11	2	0	0	3	9	19	11	21	13
1977	11	0	0	0	0	0	0	0	0	2	5	1	3
1976	7	0	0	4	2	0	0	0	0	0	0	1	0
1975	44	7	18	7	0	0	0	0	1	1	2	6	2
1974	22	3	3	0	0	0	0	1	3	3	0	7	2
1968	36	3	4	5	2	0	0	1	2	5	6	3	5
1967	91	11	17	12	3	0	1	3	7	3	10	8	16
1966	25	0	0	0	0	0	0	0	0	10	2	3	10