[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]

[vsnet-alert 310] S 10932 - improved elements and 4-mag minima

S 10932 Com

The current outburst of this star led us to (re)analyse CCD
observations made at Sonneberg Observatory with a 60-cm-Cassegrain
telescope from 1994-May-11 to 1996-Jan-04. 

Eclipsing times published in "Wenzel, Richter, Luthardt, Schwartz:
IBVS 4182" are now improved. We have listed all eclipsing times based
on CCD measurements and in addition four minima from the Sonneberg Sky
Patrol (SSP):

Instr.	HJD 2400000+	E	O-C (d)

SSP	41798.443	-88329  +0.000261
SSP	45814.407	-42189  -0.000097
SSP	46910.398	-29597  -0.000064
SSP	47265.515	-25517  -0.000849
CCD	49484.39297	-24     +0.000238
CCD	49484.48022	-23     +0.000449
CCD	49486.48240	0       +0.000740     
CCD	49488.39654	22      +0.000029
CCD	49488.48385	23      +0.000301
CCD	49511.46160	287     -0.000159
CCD	49748.46836	3010    +0.000295
CCD	49758.47767	3125    +0.000158
CCD	49771.44638	3274    +0.000106
CCD	49771.53334	3275    +0.000027
CCD	49787.37358	3457    -0.000772
CCD	49787.46124	3458    -0.000150
CCD	49787.54842	3459    -0.000009
CCD	49787.63531	3460    -0.000158
CCD	49788.41972:	3469	+0.000904:
CCD	49788.50576	3470    -0.000094
CCD	49788.59273	3471    -0.000163
CCD	50087.57025	6906    -0.000484
CCD	50087.65795	6907    +0.000178

Using these minima times (except uncertain minimum 3469), which are
distributed over more than 20 years, and the eclipsing times published
in "vsnet-alert 308" and "309" by Taichi Kato & Ouda team we could
derive the following ephemerides: 

	Min (HJD) = J.D. 2449486.48166 + 0.0870386727 * E

Our observations of 96-Jan-04/05 (E 6906 and E 6907) show the ecplises with
an amplitude of about 4.4 mag (R band)!

Peter Kroll and Gerold A. Richter		96-Jan-09
Sonneberg Observatory, Germany
(pk@sophia.stw.tu-ilmenau.de)

VSNET Home Page

Return to Daisaku Nogami

vsnet-adm@kusastro.kyoto-u.ac.jp