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[vsnet-history 1910] LL And photometry


(1993 Dec. 12)

subject: LL And photometry

0001       LL Andromedae (UG)
0002
0003       00h 41m 51.41s
0004       +26deg 37' 20.8"  (J2000.0)
0500---------------------------------------------------------------------------
0501 YYYY+
0502 MM DD.DDD  MAGN  MS SEQ OBSERVER           NOTES                 SOURCE
0503---------------------------------------------------------------------------
0504
1993 11 05.577 [14.2  mv GS  Moriyama, M.       33-cm refl.           VSOLJ
1993 11 09.010 [15.3  mv GS  Poyner, G.         40-cm refl.           Mail(poy)
1993 11 12.008 [15.3  mv GS  Poyner, G.         40-cm refl.           Mail(poy)
1993 11 12.546 [14.2  mv GS  Moriyama, M.       33-cm refl.           VSOLJ
1993 11 14.914 [15.3  mv GS  Poyner, G.         40-cm refl.           Mail(poy)
1993 11 19.911 [14.9  mv GS  Poyner, G.         40-cm refl.           Mail(poy)
1993 12 06.878 [13.7  mv GS  Schmeer, P.        20.3-cm SCT           Mail(scp)
1993 12 07.567 [14.2  mv GS  Moriyama, M.       33-cm refl.           VSOLJ
1993 12 07.906  14.0  mv GS  Vanmunster, T.     35-cm refl.           Mail(pvc)
1993 12 07.914 [13.7  mv GS  Schmeer, P.        20.3-cm SCT           Mail(scp)
1993 12 07.923  13.9  mv GS  Poyner, G.         40-cm refl.           Mail(poy)
1993 12 07.927  13.9  mv GS  Van Cautern, P.    40-cm refl.           Mail(pvc)
1993 12 07.930  14.0  mv GS  Poyner, G.         40-cm refl.           Mail(poy)
1993 12 08.00   13.9  mv GS *Vanmunster, T.     35-cm refl.           Mail(pvc)
1993 12 08.628 [14.2  mv GS  Moriyama, M.       33-cm refl.           VSOLJ
1993 12 09.367  14.1  V  GS *Kato, T.           60-cm refl.           Mail(kat)
1993 12 09.74   13.9  mv GS *Vanmunster, T.     35-cm refl.           Mail(pvc)
1993 12 09.90   14.1: mv GS *Van Cautern, P.    40-cm refl.           Mail(pvc)
1993 12 10.83   14.3  mv GS *Van Cautern, P.    40-cm refl.           Mail(pvc)
1993 12 10.89   13.9  mv GS *Vanmunster, T.     35-cm refl.           Mail(pvc)
1993 12 11.476  14.2  V  GS *Kato, T.           60-cm refl.           Mail(kat)

   CCD photometry by T. Kato indicated that LL And had declined by 0.087
mag in 2 days.  The decline rate is substantially slower than those of
superoutbursts of SU UMa stars.  However, a short-period modulation with
a period of ~80min was suspected in the light curves taken through thin
clouds.  Reality of this phenomenon awaits further confirmation.
   Is anyone able to indentify the quiescent counterpart in the POSS?

Regards,
Taichi Kato

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