[vsnet-alert 25882] RX J2133.7+5107: another fading episode (2021 April 18 - May 5)

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

 RX J2133.7+5107 (NLDQ)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=133468

Another (longer) dip was observed from 2021 April 18 to May 5:
https://asas-sn.osu.edu/sky-patrol/coordinate/e2c8f710-e470-46be-8b51-38b965d79886
https://lasair.roe.ac.uk/object/ZTF18aayxqoc/
 
Regards,
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 Freitag, 13. November 2020, 09:16:29 MEZ hat Patrick Schmeer <pasc1312-aavso at yahoo.de> Folgendes geschrieben:  
 
  RX J2133.7+5107 (NLDQ)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=133468

Yes, a fading was recorded 2020 April 26-29:
https://asas-sn.osu.edu/light_curves/255a4636-5b31-4158-bcce-43610a59953a
https://lasair.roe.ac.uk/object/ZTF18aayxqoc/

Unfortunately I noticed it only on 2020 May 3, but
nevertheless I informed some IP observers about it.

Such (brief) dips have been observed in a few other
intermediate polars, too (e.g. DO Dra).

Long (and deep) fadings have been observed in the
intermediate polar V1223 Sgr:
http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/22506
http://ooruri.kusastro.kyoto-u.ac.jp/mailarchive/vsnet-alert/23998

Regards,
Patrick
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     Am Freitag, 13. November 2020, 08:08:16 MEZ hat Taichi Kato <tkato at kusastro.kyoto-u.ac.jp> Folgendes geschrieben:  
 
 RX J2133.7+5107: fading episode in 2020 Apr.

ASAS-SN data:
https://asas-sn.osu.edu/light_curves/0a7dad9d-c746-4641-90c0-8729e2a9d8aa

  There was a short fading episode to <16.9g around
2020 Apr. 28.  The episode would be too short to be
regarded as a VY Scl star.