[vsnet-newvar 8121] MASTER OT J172758.09+380021.5 likely superoutburst

Fri Mar 19 05:24:03 JST 2021

 Maeda-san detected MASTER OT J172758.09+380021.5
at mag. 13.9 on 2021 March 17.736 UT, so the
current outburst looks indeed like a superoutburst:
http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-outburst/26859

Clear skies,
Patrick
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     Am Donnerstag, 18. März 2021, 21:16:17 MEZ hat Patrick Schmeer pasc1312-aavso at yahoo.de via vsnet-alert <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  

  MASTER OT J172758.09+380021.5 (UGSU, EI Psc star?)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=359271

ZTF light curve, data, and images (via Lasair):
https://lasair.roe.ac.uk/object/ZTF18aaiytds/

Recent ASAS-SN Sky Patrol light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/f2caca6a-eb04-424d-8268-84272988b2cc

The March 7 outburst was a normal one.
Hopefully the current outburst is the expected superoutburst.

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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    Am Sonntag, 7. März 2021, 13:55:41 MEZ hat Patrick Schmeer pasc1312-aavso at yahoo.de via vsnet-alert <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  

 MASTER OT J172758.09+380021.5  (UGSU, EI Psc star?)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=359271

Recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S
and Kochanek et al. 2017PASP..129j4502K) light curve and data:
https://asas-sn.osu.edu/sky-patrol/coordinate/556f26e9-2c4c-44ab-8762-338fb07acabd

Zwicky Transient Facility (ZTF) light curve and data:
https://lasair.roe.ac.uk/object/ZTF18aaiytds/

The current outburst is expected to be a superoutburst (as
recent superoutbursts were observed 2020 November 8-14
and 2021 January 8-15).

Time-resolved photometry is encouraged.

Clear skies,
Patrick

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