[vsnet-alert 25654] ASASSN-21du rapid fading (between Apr. 1 and 4)

[Patrick Schmeer pasc1312-aavso@yahoo.de via vsnet-alert]

ASASSN-21du  (UG)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=2217316

ZTF light curve, data, and images (via Lasair):
https://lasair.roe.ac.uk/object/ZTF21aapvoqy/
ASASSN-21du 20210318.4769 16.47zr ZTF
ASASSN-21du 20210318.5156 16.35zg ZTF
ASASSN-21du 20210322.5049 16.95zr ZTF
ASASSN-21du 20210325.4072 17.14zr ZTF
ASASSN-21du 20210325.4365 17.21zg ZTF
ASASSN-21du 20210329.4442 17.60zr ZTF
ASASSN-21du 20210329.5009 17.60zg ZTF
ASASSN-21du 20210401.4766 17.88zr ZTF
ASASSN-21du 20210401.4968 17.69zg ZTF
ASASSN-21du 20210404.4989 19.88zr ZTF

Recent ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/ee4ccd58-db85-45d9-b6fe-9563fbcb30cf

The long outburst (superoutburst?) started between 2021 April 8 and 13.
Follow-up observations are encouraged.

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
Lasair:
- Smith et al., 2019RNAAS...3...26S
Zwicky Transient Facility (ZTF):
- Masci et al., 2019PASP..131a8003M
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