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Observation Summary for Variable Star MARKARIAN 501

Total observations:	63		Minimum magnitude:	13.900	Maximum magnitude:	13.000
First observation:	JD 2452020.632000	\	21 Apr 2001 03:10:04.800000 UT	Latest observation:	JD 2459720.503000	\	21 May 2022 00:04:19.200000 UT

Observation Method	Number of Observations
Visual	63

Year	Total	Feb	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov
2022	1	0	0	1	0	0	0	0	0	0
2020	1	0	0	1	0	0	0	0	0	0
2018	4	0	0	1	1	1	1	0	0	0
2017	1	0	0	1	0	0	0	0	0	0
2015	5	0	1	2	0	0	1	1	0	0
2014	2	0	0	0	0	1	1	0	0	0
2013	4	0	1	1	0	0	1	1	0	0
2012	4	0	0	1	0	1	1	1	0	0
2011	3	0	0	1	0	1	0	1	0	0
2010	1	0	0	0	0	0	0	1	0	0
2009	5	0	0	2	0	1	1	1	0	0
2008	7	1	0	0	1	1	1	1	2	0
2007	7	0	0	2	0	0	1	2	1	1
2005	3	0	0	0	0	0	1	2	0	0
2004	1	0	0	0	0	0	0	0	0	1
2003	1	0	0	0	0	0	1	0	0	0
2002	6	0	0	0	0	0	2	3	1	0
2001	7	0	2	3	1	1	0	0	0	0