Variable Star Plotter

Field photometry for Mrk 421 from the AAVSO Variable Star Database

Data includes all comparison stars within 0.15416666666666667° of RA: 11:04:27.32 [166.11383333°] & Dec: 38:12:31.8 [38.20883333°]

Report this sequence as X41374FWQ in the chart field of your observation report.

AUID	RA	Dec	Label	V	B-V
000-BBR-962	11:04:31.23 [166.13011169°]	38:14:28.9 [38.24136353°]	60	6.000 (—)²²	0.160 (—)
000-BBR-967	11:04:43.86 [166.18275452°]	38:14:46.8 [38.24633408°]	76	7.553 (0.056)¹⁶	0.472 (0.087)
000-BLW-999	11:03:47.51 [165.94795227°]	38:18:24.6 [38.30683517°]	137	13.742 (0.031)²⁹	0.790 (0.147)
000-BLX-001	11:03:56.40 [165.98500061°]	38:18:45.8 [38.31272125°]	141	14.142 (0.049)²⁹	0.617 (0.174)
000-BBR-968	11:04:51.13 [166.21304321°]	38:17:10.6 [38.28627777°]	144	14.373 (0.004)¹⁰	0.646 (0.008)
000-BBR-955	11:04:18.19 [166.07579041°]	38:16:30.4 [38.27511215°]	156	15.560 (0.009)¹⁰	0.629 (0.019)
000-BBR-964	11:04:38.14 [166.15892029°]	38:15:54.9 [38.26525116°]	157	15.726 (0.012)¹⁰	0.991 (0.032)

AUID is the AAVSO Unique Identifier for the star. When reporting a problem, please include this AUID.
Coordinates are in J2000 sexagesimal format, followed by decimal degrees
Search for variable stars in this field via VSX
Label is that star's label when plotted on an AAVSO chart, usually (but not always) its V magnitude rounded to the nearest tenth.

Footnote	Source	Footnote	Source	Footnote	Source
1	Tycho-2	18	SRO	35	Landolt2007
2	GSC 1.2	19	NA	36	Landolt2009
3	GSC 2.2	20	GCPD	37	BSM_S
4	USNO A2.0	21	SDSS	38	UCAC3
5	USNO B1.0	22	BSC	39	UCAC4
6	GCVS 4.2	23	LONEOS	40	BSM-Hamren
7	UCAC2	24	WBVR	41	BSM_Berry
8	2MASS	25	DENIS	42	TMO61
9	AAVSO Charts	26	CMC14	43	VSX
10	CCD Henden	27	RRLyr	44	COKER30
11	Downes	28	BSM_NM	45	BSM_HQ
12	Hipparcos	29	APASS	46	Pan-STARRS
13	HD	30	W28	47	Landolt2013
14	NSV	31	W30	48	Gaia DR2
15	ACP 0.9	32	OC61	49	Gaia DR3
16	TASS	33	SRO50
17	ASAS	34	K35