Table 1.
Archival data, obtained from February 2006 to May 2017, of the source at the AT 2021blu location.
| UT Date | MJD | Filter | Magnitude | Instrumental configuration |
|---|---|---|---|---|
| 2006-02-25 | 54094.15 | B | 23.50 (0.14) | INT + WFC |
| 2006-02-25 | 54094.13 | V | 23.03 (0.26) | INT + WFC |
| 2006-12-25 | 54094.12 | r | 22.98 (0.12) | INT + WFC |
| 2010-03-21 to 2013-02-12 | 55801.07 ( * ) | g | 23.27 (0.21) | PS1 (stack) |
| 2011-03-14 to 2014-02-09 | 56246.25 ( * ) | r | 22.98 (0.18) | PS1 (slack) |
| 2011-05-16 to 2015-01-12 | 56246.96 ( * ) | z | 22.83 (0.27) | PS1 (slack) |
| 2010-12-31 to 2015-01-22 | 56271.52 ( * ) | y | > 21.86 | PS1 (slack) |
| 2011-03-14 to 2015-01-12 | 56582.35 ( * ) | i | 22.86 (0.20) | PS1 (slack) |
| 2016-03-09 | 57456.33 | g | 23.03 (0.34) | Bok + 90prime |
| 2016-02-03 | 57421.37 | r | > 22.73 | Bok + 90prime |
| 2016-02-04 | 57422.40 | r | 22.79 (0.44) | Bok + 90prime |
| 2016-02-04 | 57422.40 | z | 22.51 (0.35) | KPNO4m + Mosaic3 |
| 2016-02-06 | 57424.38 | z | 22.50 (0.33) | KPNO4m + Mosaic3 |
| 2016-02-15 | 57433.38 | r | > 22.70 | Bok + 90prime |
| 2017-03-22 | 57834.34 | z | 22.03 (0.18) | KPNO4m + Mosaic3 |
| 2017-03-25 | 57837.31 | z | 22.06 (0.16) | KPNO4m + Mosaic3 |
| 2017-05-17 | 57890.21 | g | > 22.60 | Bok + 90prime |
Notes. Johnson-Bessell B and V data are in the Vega magnitude scale, while Sloan g, r, i, z and Pan-STARRS y data (Tonry et al. 2012) are in the AB magnitude scale. The Pan-STARRS data were obtained after stacking individal images collected from March 2010 to January 2015. ( * )Average MJD of the stacked image.
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