[vsnet-alert 21415] V742 Lyr: fade started on 15 Aug. 2017 (ASAS-SN)

Fri Sep 8 16:55:20 JST 2017

V742 Lyrae  (RCB)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=49778

The current fade began already on
2017 August 15.
ASAS-SN Sky Patrol observations:
LYRV742 20170809.375 12.22V ASN
LYRV742 20170810.404 12.20V ASN	
LYRV742 20170812.415 12.23V ASN 
LYRV742 20170813.337 12.23V ASN
LYRV742 20170815.374 12.29V ASN
LYRV742 20170816.357 12.36V ASN
LYRV742 20170817.377 12.40V ASN
LYRV742 20170818.277 12.45V ASN
LYRV742 20170820.256 12.55V ASN
LYRV742 20170823.354 12.68V ASN
LYRV742 20170824.302 12.74V ASN
LYRV742 20170826.340 12.86V ASN
LYRV742 20170830.251 13.17V ASN
LYRV742 20170901.272 13.37V ASN
LYRV742 20170904.268 13.67V ASN
LYRV742 20170905.353 13.83V ASN
LYRV742 20170906.356 13.85V ASN
LYRV742 20170907.338 13.97V ASN

Clear skies,
Patrick
----------------------------
vsnet-alert 21412 (Taichi Kato):

V742 Lyr fading

>From [baavss-alert] V742 Lyr (Gary Poyner)

> The RCB star V742 Lyr (NSV 11154) is fading...
>
> Aug 28.935 12.5 vis
> Aug 30.997 12.5 vis
>
> Sep 07.047 14.01V COAST telescope
>
> AAVSO IDB indicates that the fade begun
> on Aug 31.93 at 13.35V (T. Karlsson).
>
> The last fade occurred in March 2015.
>
> V742 Lyr was identified as an RCB star
> as recently as 2011...

Thomas Karlsson and Hiraga-san already
detected the start of fading on Aug. 23-24.

YYYYMMDD(UT) mag      observer
20170810.028 123     (Gary Poyner)
20170811.601 122V    (Masayuki Moriyama)
20170811.649 124c    (Mitsutaka Hiraga)
20170812.919 123     (Eddy Muyllaert)
20170815.894 123     (Eddy Muyllaert)
20170815.962 124     (Gary Poyner)
20170816.965 124V    (Thomas Karlsson)
20170818.904 124     (Eddy Muyllaert)
20170819.885 123     (Eddy Muyllaert)
20170821.487 12.64cG (Makoto Watanabe)
20170823.942 124     (Gary Poyner)
20170823.986 127V    (Thomas Karlsson)
20170824.542 128c    (Mitsutaka Hiraga)
20170824.949 124     (Eddy Muyllaert)
20170826.553 129c    (Mitsutaka Hiraga)
20170826.932 125     (Gary Poyner)
20170826.955 123     (Eddy Muyllaert)
20170827.938 124     (Eddy Muyllaert)
20170828.603 131c    (Mitsutaka Hiraga)
20170828.935 125     (Gary Poyner)
20170830.923 125     (Gary Poyner)
20170831.549 134c    (Mitsutaka Hiraga)
20170831.876 124     (Eddy Muyllaert)
20170831.928 13.35V  (Thomas Karlsson)
20170902.896 124     (Eddy Muyllaert)
20170907.047 14.01V  (Gary Poyner)