[vsnet-alert 25618] CRTS J091245.9-034916 bright outburst (mag. 15.1)

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

 CRTS J091245.9-034916 (UGSU:)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=251692

ZTF light curve, data, and images (via Lasair):
https://lasair.roe.ac.uk/object/ZTF18acsoscj/
CRTSJ091245.9-034916 20210329.151 17.56zg ZTF
CRTSJ091245.9-034916 20210329.243 17.10zr ZTF
CRTSJ091245.9-034916 20210331.152 15.06zr ZTF

Recent ASAS-SN Sky Patrol light curve and data ("contaminated"):
https://asas-sn.osu.edu/sky-patrol/coordinate/8b7f9f2b-d2be-4445-901e-f992816d5b5a

According to ATLAS and ASAS-SN data this dwarf nova may have
been bright already on 2021 March 27. Precursor outburst?

The most recently recorded long outburst was observed from
2020 November 17 to 25.

Time-resolved photometry during the current outburst is 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
- Heinze et al., 2018AJ....156..241H
Lasair:
- Smith et al., 2019RNAAS...3...26S
Zwicky Transient Facility (ZTF):
- Masci et al., 2019PASP..131a8003M
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     Am Freitag, 27. November 2020, 01:10:29 MEZ hat Taichi Kato <tkato at kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  
 
 CRTS J091245.9-034916 (bright) outburst

  Bright peak on Nov. 22.  Fading too rapid for a superoutburst?
  (Suspected SU UMa star)

  YYYYMMDD(UT)  mag  observer
  20201115.4572 18.401zr  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20201122.5236 14.896zg  (Zwicky Transient Facility Lasair (Masci+ 2019))
  20201125.5461 16.081zr  (Zwicky Transient Facility Lasair (Masci+ 2019))