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Gaia21dde




Other surveys detections
None
Comments
Seyfert 1 galaxy SDSS J162119.42+161011.9 brightens by 1 mag in 3 months
ATels
None
AstroNotes
None

TNS ID
AT2021sfp

RA - DEC
245.33091   16.16999
16:21:19.42   16:10:11.96
Galactic coords.
31.50853   40.367

Alerting date
2021-07-04 11:40:35
Julian date (TCB)
2459399.99
Alerting magnitude
18.49
Historic magnitude
19.60
Historic StdDev
0.08
Class
AGN
Publication date
July 6, 2021, 7:56 a.m.
  • See here for an explanation of lightcurves.


Click and scroll down and select one row in the table below to display the corresponding spectrum.


Date JD Average Mag.
2015-01-08 03:21:15 2457030.64 19.59
2015-01-08 09:21:30 2457030.89 19.55
2015-01-08 11:08:05 2457030.96 19.55
2015-02-14 02:57:49 2457067.62 19.61
2015-02-14 04:44:23 2457067.70 19.60
2015-03-21 14:18:24 2457103.10 19.52
2015-03-21 16:04:58 2457103.17 19.56
2015-07-13 23:14:24 2457217.47 19.54
2015-07-14 01:00:58 2457217.54 19.51
2015-09-06 04:38:02 2457271.69 19.57
2015-09-06 06:24:36 2457271.77 19.54
2016-01-02 18:07:03 2457390.25 19.56
2016-01-24 12:13:23 2457412.01 19.60
2016-02-24 23:53:59 2457443.50 19.63
2016-04-03 21:15:46 2457482.39 19.70
2016-04-03 23:02:21 2457482.46 19.62
2016-07-23 12:17:15 2457593.01 19.65
2016-07-23 14:03:49 2457593.09 19.57
2016-08-16 12:09:41 2457617.01 19.75
2016-08-16 13:56:15 2457617.08 19.61
2016-09-16 17:46:58 2457648.24 19.58
2016-09-16 19:33:32 2457648.31 19.56
2017-01-12 13:18:04 2457766.05 19.56
2017-01-12 17:31:45 2457766.23 19.59
2017-02-07 07:15:01 2457791.80 19.49
2017-03-06 18:38:36 2457819.28 19.62
2017-03-06 20:25:11 2457819.35 19.60
2017-04-19 11:36:36 2457862.98 19.65
2017-04-19 13:23:10 2457863.06 19.61
2017-04-19 17:36:51 2457863.23 19.52
2017-04-19 19:23:26 2457863.31 19.61
2017-04-20 01:23:41 2457863.56 19.52
2017-04-20 05:37:21 2457863.73 19.50
2017-04-20 07:23:56 2457863.81 19.53
2017-04-21 13:25:09 2457865.06 19.49
2017-04-21 19:25:24 2457865.31 19.51
2017-04-21 23:39:04 2457865.49 19.49
2017-04-22 01:25:39 2457865.56 19.24
2017-04-22 05:39:19 2457865.74 19.50
2017-04-22 07:25:54 2457865.81 19.57
2017-04-22 11:39:34 2457865.99 19.56
2017-04-22 13:26:09 2457866.06 19.52
2017-08-03 14:44:44 2457969.11 19.55
2017-09-28 02:18:44 2458024.60 19.68
2017-09-28 04:05:17 2458024.67 19.65
2018-01-23 09:51:34 2458141.91 19.62
2018-01-23 14:05:15 2458142.09 19.64
2018-03-17 09:32:13 2458194.90 19.64
2018-06-24 16:45:48 2458294.20 19.75
2018-06-24 18:32:22 2458294.27 19.69
2018-07-04 06:38:19 2458303.78 19.69
2018-07-04 10:51:59 2458303.95 19.77
2018-08-14 17:37:30 2458345.23 19.61
2018-09-15 17:13:51 2458377.22 19.69
2018-10-09 03:28:07 2458400.64 19.70
2018-10-09 05:14:41 2458400.72 19.70
2019-02-03 11:02:33 2458517.96 19.58
2019-07-04 01:29:10 2458668.56 19.67
2019-08-07 20:10:47 2458703.34 19.66
2019-08-07 21:57:21 2458703.41 19.58
2019-09-10 21:41:29 2458737.40 19.62
2019-09-30 22:17:15 2458757.43 19.74
2020-01-03 10:28:41 2458851.94 19.66
2020-01-03 12:15:15 2458852.01 19.68
2020-01-17 22:52:49 2458866.45 19.62
2020-01-18 00:39:24 2458866.53 19.60
2020-02-22 12:49:59 2458902.03 19.46
2020-02-22 14:36:34 2458902.11 19.61
2020-04-16 02:53:35 2458955.62 19.53
2020-04-16 04:40:09 2458955.69 19.56
2020-04-16 08:53:50 2458955.87 19.58
2020-06-23 16:58:46 2459024.21 19.63
2020-06-23 18:45:20 2459024.28 19.59
2020-06-23 22:59:00 2459024.46 19.62
2020-06-24 00:45:34 2459024.53 19.61
2020-07-10 17:19:17 2459041.22 19.61
2020-07-10 19:05:51 2459041.30 19.65
2020-07-10 23:19:30 2459041.47 19.70
2020-08-15 05:36:06 2459076.73 19.71
2020-09-16 17:11:52 2459109.22 19.68
2020-10-09 15:26:59 2459132.14 19.66
2020-10-09 17:13:33 2459132.22 19.63
2021-02-03 23:01:32 2459249.46 19.59
2021-03-08 14:47:10 2459282.12 19.64
2021-03-28 02:49:06 2459301.62 19.53
2021-03-28 04:35:40 2459301.69 19.54
2021-07-04 11:40:35 2459399.99 18.49
2021-07-04 13:27:09 2459400.06 18.49
2021-07-20 05:44:54 2459415.74 18.36
2021-08-26 16:57:14 2459453.21 18.53



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