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Observation Summary for Variable Star NGC4151

Total observations:	3,295		Minimum magnitude:	12.900	Maximum magnitude:	10.900
First observation:	JD 2443557.708000	\	18 Feb 1978 04:59:31.200000 UT	Latest observation:	JD 2460828.486000	\	1 Jun 2025 23:39:50.400000 UT

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	15	2	2	3	3	4	1	0	0	0	0	0	0
2024	19	2	2	3	5	3	1	1	0	0	0	0	2
2023	19	3	2	2	3	3	2	1	0	0	0	2	1
2022	19	3	2	2	3	4	2	0	0	0	0	2	1
2021	18	2	2	3	6	3	2	0	0	0	0	0	0
2020	42	3	4	8	11	12	1	0	0	0	0	1	2
2019	38	3	3	9	7	10	3	0	0	0	0	1	2
2018	36	2	5	5	7	12	3	0	0	0	0	0	2
2017	43	2	2	9	11	8	4	3	0	0	0	2	2
2016	53	2	7	15	10	10	3	2	0	0	0	1	3
2015	65	3	6	8	19	12	9	4	1	0	0	1	2
2014	45	2	3	8	9	14	4	2	0	0	0	1	2
2013	51	2	3	8	10	15	6	3	0	0	0	1	3
2012	56	3	6	20	7	12	3	2	0	0	0	1	2
2011	39	1	5	5	8	8	5	3	2	0	0	0	2
2010	67	3	5	14	15	12	8	3	2	0	2	2	1
2009	81	10	4	10	13	13	9	8	3	1	3	4	3
2008	78	6	9	12	10	12	8	7	3	3	1	2	5
2007	53	2	4	7	16	12	6	3	3	0	0	0	0
2006	75	1	3	19	29	9	3	5	3	0	0	2	1
2005	56	3	7	6	14	12	6	1	2	1	0	1	3
2004	57	3	6	7	8	10	10	7	2	1	0	2	1
2003	80	5	8	23	21	5	7	7	2	0	0	1	1
2002	105	6	13	15	22	15	12	9	6	3	2	1	1
2001	71	3	6	14	17	11	5	6	3	1	1	2	2
2000	100	6	17	15	18	13	11	5	4	3	2	3	3
1999	118	3	10	22	17	16	11	17	14	3	1	2	2
1998	86	5	11	13	19	13	8	5	5	1	1	2	3
1997	78	5	7	17	7	16	8	6	4	2	2	1	3
1996	44	1	6	3	10	8	5	2	2	2	1	2	2
1995	103	9	12	30	19	13	5	3	3	2	3	3	1
1994	81	5	6	15	16	12	8	6	5	1	3	1	3
1993	119	6	7	19	14	26	22	14	3	1	1	1	5
1992	33	1	5	6	6	6	3	2	2	1	0	0	1
1991	60	6	7	8	10	5	6	5	7	1	2	1	2
1990	94	9	13	18	14	10	6	12	5	0	1	3	3
1989	84	6	10	13	5	16	10	10	8	0	1	1	4
1988	135	13	18	18	15	17	13	13	11	6	4	4	3
1987	189	15	13	28	24	22	13	19	23	13	9	6	4
1986	177	18	15	24	18	21	22	16	9	13	8	5	8
1985	148	12	20	22	25	15	9	12	11	7	7	4	4
1984	138	10	7	10	33	8	16	16	12	8	10	2	6
1983	139	3	16	21	19	12	17	13	16	5	5	3	9
1982	68	5	7	10	14	10	2	4	3	2	4	6	1
1981	18	0	0	1	4	3	3	1	3	0	0	1	2
1978	2	0	1	1	0	0	0	0	0	0	0	0	0