	British Astronomical Association Supporting amateur astronomers since 1890		Home	Login
			Help

Observation Summary for Variable Star MARKARIAN 421

Total observations:	6,936		Minimum magnitude:	14.900	Maximum magnitude:	8.400
First observation:	JD 2443172.740000	\	29 Jan 1977 05:45:36.000000 UT	Latest observation:	JD 2460870.452100	\	13 Jul 2025 22:51:01.440000 UT

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	120	17	12	24	29	23	8	7	0	0	0	0	0
2024	103	13	11	16	18	17	17	2	0	0	3	1	5
2023	146	16	15	13	20	26	46	2	0	0	1	3	4
2022	157	12	16	30	42	19	13	7	0	0	6	5	7
2021	109	7	13	18	38	22	10	0	0	0	0	1	0
2020	184	11	21	31	47	57	7	1	0	0	2	3	4
2019	142	18	27	27	20	23	7	4	0	0	5	5	6
2018	147	8	32	15	21	34	14	0	1	0	7	6	9
2017	126	7	7	35	26	23	7	2	0	3	4	7	5
2016	146	8	31	36	23	25	7	5	0	0	1	5	5
2015	204	15	26	26	53	35	21	2	4	4	6	4	8
2014	185	19	24	37	33	30	9	6	2	2	7	4	12
2013	207	8	14	17	58	43	23	9	3	3	3	7	19
2012	198	22	17	58	23	35	7	4	4	6	5	7	10
2011	135	5	13	21	38	30	11	1	0	1	5	4	6
2010	163	3	13	26	39	30	22	4	1	1	9	9	6
2009	171	17	8	29	37	34	18	6	2	1	3	6	10
2008	212	22	46	32	28	25	26	8	4	3	8	3	7
2007	217	22	24	35	59	43	12	3	3	1	5	4	6
2006	191	15	21	40	56	18	13	10	0	3	3	6	6
2005	130	18	20	11	26	26	12	1	1	0	0	7	8
2004	159	19	23	25	32	27	18	2	0	0	3	4	6
2003	250	32	38	70	50	28	10	10	0	1	1	5	5
2002	227	14	34	28	75	36	13	8	2	1	6	4	6
2001	222	17	26	36	47	53	15	8	0	0	2	4	14
2000	284	31	51	51	55	42	18	10	0	1	7	13	5
1999	299	30	35	41	40	50	38	25	5	1	8	6	20
1998	180	19	28	24	42	34	10	5	0	0	3	10	5
1997	245	19	30	44	34	56	13	14	8	2	7	8	10
1996	159	1	28	7	27	29	22	14	0	0	6	12	13
1995	196	31	24	50	29	25	8	5	0	1	6	10	7
1994	166	16	33	25	31	22	14	2	0	0	5	5	13
1993	189	19	18	36	23	33	27	9	2	1	4	7	10
1992	141	5	12	20	28	37	12	9	0	0	6	2	10
1991	63	11	7	10	14	7	5	0	0	0	1	2	6
1990	110	16	20	26	22	15	3	0	0	0	0	3	5
1989	134	16	24	28	13	22	11	9	1	0	1	2	7
1988	177	17	28	23	26	20	25	22	3	0	3	5	5
1987	108	9	6	14	23	20	7	8	2	1	7	6	5
1986	51	5	4	12	8	9	5	3	0	0	1	1	3
1985	39	5	10	11	8	1	2	0	0	0	0	1	1
1984	40	7	4	5	14	3	3	0	1	0	1	1	1
1983	43	2	9	9	9	5	5	1	0	1	0	1	1
1982	51	3	2	13	19	9	2	0	0	0	0	2	1
1981	9	0	0	0	4	3	1	0	0	0	0	1	0
1977	1	1	0	0	0	0	0	0	0	0	0	0	0