AAVSO: American Association of Variable Star Observers

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Showing 22,827 observations for MRK 421 from 214 observers

Star JD Calendar Date Magnitude Error Filter Observer
MRK 421 2458870.39236 2020 Jan. 21.89236 12.8 Vis. WKL Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
12.7 No 5659oah
MARK 421 2458869.514 2020 Jan. 21.01400 13.3 Vis. PYG Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
134+1 No AAVSO 1368BBB
MARK 421 2458866.7333 2020 Jan. 18.23330 13.5 Vis. VTY Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
=E No 243.01 40CM
MRK 421 2458865.37847 2020 Jan. 16.87847 12.9 Vis. WKL Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
12.7 No 5659oah
MRK 421 2458856.88038 2020 Jan. 08.38038 13.002 0.006 V DKS Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
000-BBR-946 (13.310) 000-BBR-968 (14.336) No 14607G ERROR: V-C STDDEV+C POISSON IN QUAD;
MRK 421 2458853.5618 2020 Jan. 05.06180 12.9 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MRK 421 2458852.5396 2020 Jan. 04.03960 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MRK 421 2458849.48611 2019 Dec. 31.98611 12.8 Vis. JTHA Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
128 134 No X24972BC Had to be placed at edge of field at 133x (9mm ES100), to keep glaringly bright 51 UMa out of field.
MRK 421 2458848.6104 2019 Dec. 31.11040 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MARKARIAN 421 2458847.731 2019 Dec. 30.23100 13.1 Vis. TOO Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
No 243.01 SCT200
MRK 421 2458847.5799 2019 Dec. 30.07990 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MRK 421 2458846.6194 2019 Dec. 29.11940 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MRK 421 2458845.6340 2019 Dec. 28.13400 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MRK 421 2458844.6326 2019 Dec. 27.13260 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MARKARIAN 421 2458842.721 2019 Dec. 25.22100 13.0 Vis. TOO Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
No 243.01 SCT200
MRK 421 2458837.68403 2019 Dec. 20.18403 13.1 Vis. WKL Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
12.7 No 5659oah
MRK 421 2458835.6472 2019 Dec. 18.14720 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
MRK 421 2458833.94841 2019 Dec. 16.44841 13.028 0.010 V DKS Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
000-BBR-946 (13.310) 000-BBR-968 (14.325) No 14607G ERROR: V-C STDDEV+C POISSON IN QUAD;
MRK 421 2458832.84526 2019 Dec. 15.34526 13.008 0.008 V DKS Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
000-BBR-946 (13.310) 000-BBR-968 (14.295) No 14607G ERROR: V+C POISSON;
MRK 421 2458827.64583 2019 Dec. 10.14583 12.9 Vis. WKL Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
12.7 No 5659oah
MRK 421 2458822.89769 2019 Dec. 05.39769 12.941 0.013 V DKS Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
000-BBR-946 (13.310) 000-BBR-968 (14.330) No 14607G ERROR: V-C STDDEV+C POISSON IN QUAD;
MARKARIAN 421 2458822.744 2019 Dec. 05.24400 13.3 Vis. TOO Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
No 243.01 SCT200
MARKARIAN 421 2458821.718 2019 Dec. 04.21800 13.3 Vis. TOO Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
No 243.01 SCT200
MARKARIAN 421 2458820.749 2019 Dec. 03.24900 13.1 Vis. TOO Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
No 243.01 SCT200
MRK 421 2458820.6653 2019 Dec. 03.16530 13.0 Vis. GZN Details...
Comp Star Check Star Transformed Chart Comment Codes Notes
127 133 No X16188OM
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