Gaia21cpb = AT 2021nwn (N:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=2222716
Gaia Photometric Science Alerts ("bright red transient near Galactic plane"):
http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia21cpb/
Gaia21cpb 20210512.4040 15.69G Gaia
Gaia21cpb 20210528.4086 15.74G Gaia
Gaia21cpb 20210528.5848 15.81G Gaia
Transient Name Server:
https://www.wis-tns.org/object/2021nwn
First detected by ATLAS on 2021 May 9.5298 UT (cyan magnitude 18.1) and May 11.5562 UT (orange magnitude 15.6).
At mag. 16.28 (orange) on May 29.6138 UT.
Complete ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/57935692-34e9-4452-a420-870fe43ecd4d
Spectroscopy and multiband photometry are urgently required.
Clear skies,
Patrick
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References:
All-Sky Automated Survey for Supernovae (ASAS-SN) Sky Patrol:
- Shappee et al., 2014ApJ...788...48S
- Kochanek et al., 2017PASP..129j4502K
Asteroid Terrestrial-impact Last Alert System (ATLAS):
- Tonry et al., 2018PASP..130f4505T