Outburst of AG Dra


(vsnet-alert 465)

AAVSO NEWS FLASH No. 37 (July 16) tells the yellow symbiotic variable AG Dra is undergoing an outburst as indicated by the following AAVSO photoelectric and visual observations:

Photoelectric observations by Franco Montagni and Maurizio Maesano (Italy)

 Date           Time     --------- Magnitudes ----------

06 March 1996 22:36 UT   B=10.61  V=9.54
04 May        21:35 UT   B=11.00  V=9.73
07 June       22:30 UT   B=10.59  V=9.58 
08 June       22:40 UT   B=10.43  V=9.45
16 June       21-22 UT   B=10.35  V=9.28  R=8.58  I=8.00
17 June       22-23 UT   B=10.51  V=9.41  R=8.67  I=8.04
20 June       23-24 UT   B=10.31  V=9.27  R=8.58  I=7.94
30 June       22-23 UT   B=10.00  V=9.05  R=8.35  I=7.73 
04 July       22-23 UT   B=10.17  V=9.20  R=8.45  I=7.87
06 July       22-23 UT   B= 9.94  V=9.04  R=8.35  I=7.79

30-cm and 50-cm telescopes, ST-6 CCD

visual observations:

                    AAVSO Observer                           AAVSO Observer  
    UT        Mag.     Initials              UT        Mag.     Initials      

JUN 02.3174   10.1       SQN             JUN 15.9       9.6       FRF
JUN 04.2076    9.8       HSG             JUN 16.2688    9.7       HSG
JUN 04.935     9.7       DPA             JUN 17.1931    9.7       HSG
JUN 05.1757    9.7       HSG             JUN 20.2090    9.7       HSG
JUN 05.2681    9.6       SQN             JUN 22.1993    9.7       HSG
JUN 06.2667    9.6       SQN             JUN 22.2799    9.7       SQN
JUN 07.1965    9.8       HSG             JUN 23.3701    9.7       SQN
JUN 07.2507    9.6       SQN             JUN 25.1729    9.7       HSG
JUN 07.896     9.7       DPA             JUN 30.217     9.3       BEB
JUN 09.175     9.9       MKJ             JUN 30.2632    9.7       SQN
JUN 09.2569    9.6       SQN             JUN 30.2875    9.6       HSG
JUN 11.1583    9.7       HSG             JUL 02.158     9.3       BEB
JUN 11.2681    9.7       SQN             JUL 03.2306    9.3       BEB
JUN 14.2958    9.8       HSG             JUL 04.8889    9.5       KIS
JUN 14.3007    9.7       SQN             JUL 06.1049    9.4       BRJ
JUN 14.9       9.7       FRF             JUL 11.0924    9.4       BRJ
JUN 14.927     9.6       SKP             JUL 12.0951    9.4       MKJ

Mattei also tells the charts are available at the AAVSO anonymous ftp: (in ftp://ftp.aavso.org/pub/charts/).

We will be providing a real-time light curve on the VSNET Home Page, through which the latest compilation of reported observations can be also retrieved. Please keep a close eye on the object, report your observations to vsnet-obs, and related updates on the VSNET WWW pages. Older light curve is also presented at the same location.

Regards,
Taichi Kato (VSNET sub-manager)

VSNET real-time light-curve


Link to AAVSO NEWS FLASH No. 37

Compiled observations from vsnet-obs

Light curves of symbiotic stars


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