[vsnet-alert 9751] Re: V1017 Sgr rising

[Berto Monard]

Hi,

I would like to stress that my last reported observation of V1017 Sgr is not an isolated one. Therefore herewith the whole set of observations from Bronberg, as was reported sometime earlier. I am presently not subscribed to many lists of interest and our internet flow seems to be unreliable, so you are welcome to forward this posting or its content to other variable star lists.

V1017 Sgr is one of about 200 stars that are periodically monitored at the Bronberg Observatory / CBA Pretoria. They are considered symbiotic stars or suspects of the kind. The observations were made with 12" LX200 resp RCX400 telescopes and a CCD camera ST-7 with V filter. 

The comparison star used is at position 18 32 14.095  -29 23 47.13 . The accepted V magnitude is 12.0. The true value of this star is possibly closer to 12.06V. I have checked its constancy!

SGRV1017		3466.63	2453466.63		13.75	CCD-V		MLF
SGRV1017		3498.57	2453498.57		13.80	CCD-V		MLF
SGRV1017		3506.60	2453506.60		13.90	CCD-V		MLF
SGRV1017		3524.61	2453524.61		13.75	CCD-V		MLF
SGRV1017		3561.46	2453561.46		13.76	CCD-V		MLF
SGRV1017		3594.29	2453594.29		13.70	CCD-V		MLF
SGRV1017		3629.20	2453629.20		13.70	CCD-V		MLF
SGRV1017		3827.55	2453827.55		13.77	CCD-V		MLF
SGRV1017		3908.58	2453908.58		13.80	CCD-V		MLF
SGRV1017		3975.35	2453975.35		13.86	CCD-V		MLF
SGRV1017		4004.36	2454004.36		13.98	CCD-V		MLF
SGRV1017		4062.24	2454062.24		13.90	CCD-V		MLF
SGRV1017		4160.60	2454160.60		13.91	CCD-V		MLF
SGRV1017		4204.64	2454204.64		13.83	CCD-V		MLF
SGRV1017		4237.58	2454237.58		13.89	CCD-V		MLF
SGRV1017		4319.31	2454319.31		13.76	CCD-V		MLF
SGRV1017		4368.28	2454368.28		13.31	CCD-V		MLF
SGRV1017		4395.25	2454395.25		12.70	CCD-V		MLF
SGRV1017		4414.22	2454414.22		12.28	CCD-V		MLF
SGRV1017		4417.23	2454417.23		12.22	CCD-V		MLF
SGRV1017		4432.23	2454432.23		11.79	CCD-V		MLF

I really wished I could fill in some more points now. Observatories near the equator or just North of it must be able to still do so...


Best regards,

Berto Monard
Bronberg Observatory / CBA Pretoria

>>> Ohshima <ohshima at kusastro.kyoto-u.ac.jp> 06/12/2007 08:59 >>>
recent V1017 Sgr observaion

V1017 Sgr is reported to rise.
This star underwent an outburst in 1991-1992.
Recent observation is following;

  20060728.635  13.33:V (Hiroyuki Maehara)
  20060803.616  13.26V  (Hiroyuki Maehara)
  20070430.160  12.97V  (Daniel Mendicini)
  20070508.742  13.52:V (Hiroyuki Maehara)
  20070603.696  13.14V  (Hiroyuki Maehara)
  20070902.445  13.30V  (Hiroyuki Maehara)
  20071028.385  <122  (Kenji Hirosawa)
  20071110.465   130  (Rod Stubbings)
  20071127.730  118V  (Berto Monard)