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Observation Summary for Variable Star GK PER

Total observations:	16,979		Minimum magnitude:	16.143	Maximum magnitude:	7.800
First observation:	JD 2439370.395800	\	1 Sep 1966 21:29:57.120000 UT	Latest observation:	JD 2460978.701300	\	30 Oct 2025 04:49:52.320000 UT

Observation Method	Number of Observations
Visual	10,776
Photographic	20
CCD	5,386
CMOS	797

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Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	727	91	95	200	87	0	0	45	53	88	68	0	0
2024	320	39	34	25	5	0	0	2	15	20	26	21	133
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