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Gaia21arc




Other surveys detections
None
Comments
QSO brightens by 0.35 mag in 20 months
ATels
None
AstroNotes
None

TNS ID
AT2021chh

RA - DEC
9.65229   25.39274
00:38:36.55   25:23:33.86
Galactic coords.
119.2848   -37.38814

Alerting date
2021-02-07 07:23:03
Julian date (TCB)
2459252.81
Alerting magnitude
18.49
Historic magnitude
18.92
Historic StdDev
0.10
Class
QSO
Publication date
Feb. 9, 2021, 9:35 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.
2014-08-24 20:23:38 2456894.35 19.00
2015-01-26 07:04:25 2457048.79 18.79
2015-01-26 08:50:59 2457048.87 18.76
2015-02-16 08:50:01 2457069.87 18.74
2015-02-16 13:03:40 2457070.04 18.78
2015-02-16 14:50:13 2457070.12 18.81
2015-11-23 09:26:00 2457349.89 18.81
2015-11-23 11:12:34 2457349.97 18.80
2015-11-23 15:26:13 2457350.14 18.80
2015-11-23 17:12:47 2457350.22 18.80
2015-11-28 23:16:45 2457355.47 18.78
2016-01-07 10:23:22 2457394.93 18.83
2016-02-11 02:02:38 2457429.59 18.91
2016-02-11 03:49:12 2457429.66 18.91
2016-02-11 08:02:50 2457429.84 18.93
2016-02-24 20:09:24 2457443.34 18.90
2016-02-24 21:55:57 2457443.41 18.95
2016-02-25 02:09:36 2457443.59 18.92
2016-02-25 03:56:10 2457443.66 18.87
2016-07-06 20:37:13 2457576.36 18.97
2016-07-06 22:23:47 2457576.43 18.94
2016-08-13 08:02:44 2457613.84 18.87
2016-08-13 09:49:19 2457613.91 18.87
2016-08-26 14:11:32 2457627.09 18.84
2016-11-29 10:22:42 2457721.93 18.96
2016-11-29 12:09:15 2457722.01 18.99
2016-12-14 04:26:38 2457736.69 18.92
2017-05-26 11:21:52 2457899.97 18.76
2017-05-26 13:08:27 2457900.05 18.71
2017-06-13 05:31:48 2457917.73 18.79
2017-06-13 07:18:23 2457917.80 18.76
2017-07-18 00:57:37 2457952.54 18.72
2017-12-08 12:47:12 2458096.03 18.80
2017-12-28 14:29:52 2458116.10 18.80
2018-01-27 12:15:56 2458146.01 18.85
2018-01-27 14:02:30 2458146.09 18.81
2018-06-05 02:17:32 2458274.60 18.71
2018-06-05 06:31:13 2458274.77 18.78
2018-07-29 02:08:12 2458328.59 18.74
2018-12-18 03:38:15 2458470.65 18.82
2019-01-11 21:24:10 2458495.39 18.85
2019-01-12 01:37:48 2458495.57 18.81
2019-02-06 19:24:19 2458521.31 18.81
2019-02-06 21:10:53 2458521.38 18.78
2019-06-15 19:42:10 2458650.32 18.90
2019-06-15 21:28:45 2458650.39 18.88
2019-07-14 19:33:21 2458679.31 18.83
2019-07-14 21:19:56 2458679.39 18.84
2019-08-11 10:09:21 2458706.92 18.85
2019-08-11 11:55:56 2458707.00 18.83
2019-12-17 07:54:39 2458834.83 18.72
2020-01-13 20:58:20 2458862.37 18.72
2020-01-13 22:44:53 2458862.45 18.71
2020-02-05 23:32:10 2458885.48 18.74
2020-06-28 06:48:14 2459028.78 18.63
2020-12-18 13:50:12 2459202.08 18.54
2020-12-18 15:36:46 2459202.15 18.50
2021-02-07 07:23:03 2459252.81 18.49
2021-02-07 09:09:37 2459252.88 18.49
2021-06-16 07:41:09 2459381.82 18.54
2021-06-16 09:27:44 2459381.89 18.47
2021-07-15 19:31:18 2459411.31 18.48
2021-07-15 21:17:53 2459411.39 18.48
2021-08-09 03:15:47 2459435.64 18.47
2022-01-27 10:17:08 2459606.93 18.58
2022-01-27 14:30:46 2459607.10 18.54
2022-02-17 04:17:22 2459627.68 18.56
2022-06-27 10:39:29 2459757.94 18.53
2022-07-31 02:30:17 2459791.60 18.54
2022-07-31 04:16:52 2459791.68 18.59
2022-08-19 02:35:36 2459810.61 18.52
2022-08-19 04:22:11 2459810.68 18.56
2022-11-23 16:51:56 2459907.20 18.47
2022-11-23 18:38:30 2459907.28 18.48
2022-11-23 22:52:09 2459907.45 18.50
2022-11-24 00:38:43 2459907.53 18.53
2022-11-30 12:43:18 2459914.03 18.50
2022-11-30 16:56:57 2459914.21 18.38
2022-11-30 18:43:30 2459914.28 18.48
2023-01-08 04:04:07 2459952.67 18.52
2023-01-08 05:50:41 2459952.74 18.49
2023-02-12 11:15:46 2459987.97 18.51
2023-02-25 03:36:08 2460000.65 18.51
2023-02-25 05:22:42 2460000.72 18.50
2023-02-25 09:36:21 2460000.90 18.49
2023-02-25 11:22:54 2460000.97 18.50
2023-05-22 00:09:41 2460086.51 18.49
2023-05-22 04:23:22 2460086.68 18.49
2023-05-22 06:09:57 2460086.76 18.51
2023-05-22 10:23:38 2460086.93 18.50
2023-05-22 12:10:12 2460087.01 18.50
2023-05-22 16:23:53 2460087.18 18.43
2023-05-22 18:10:28 2460087.26 18.48
2023-05-22 22:24:09 2460087.43 18.52
2023-05-23 00:10:43 2460087.51 18.44
2023-05-23 04:24:24 2460087.68 18.51
2023-05-23 06:10:59 2460087.76 18.50
2023-05-23 10:24:40 2460087.93 18.53
2023-05-23 16:24:55 2460088.18 18.53
2023-05-25 16:26:56 2460090.19 18.52
2023-05-25 22:27:11 2460090.44 18.48
2023-05-26 00:13:45 2460090.51 18.49
2023-05-26 04:27:26 2460090.69 18.45
2023-05-26 10:27:42 2460090.94 18.47
2023-05-26 12:14:16 2460091.01 18.50
2023-05-26 16:27:57 2460091.19 18.51
2023-05-26 18:14:32 2460091.26 18.54
2023-05-26 22:28:13 2460091.44 18.49
2023-05-27 00:14:48 2460091.51 18.49
2023-05-27 06:15:04 2460091.76 18.54
2023-07-08 16:04:50 2460134.17 18.50
2023-07-08 17:51:25 2460134.24 18.51
2023-08-15 15:29:19 2460172.15 18.57
2023-08-27 21:37:51 2460184.40 18.56
2023-08-28 03:38:07 2460184.65 18.56
2023-11-30 23:49:15 2460279.49 18.63
2023-12-01 01:35:49 2460279.57 18.63
2023-12-16 05:52:37 2460294.74 18.63
2023-12-16 07:39:10 2460294.82 18.61
2024-01-18 17:12:16 2460328.22 18.70
2024-01-18 18:58:50 2460328.29 18.64



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