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[vsnet-newvar 728] New variable star GSC5074-545 (HassfortherV19)

New variable Star discovered on stardial-CCD-images (HassfortherV19):

2000 171949.79 -051359.1 HassfortherV19 9.0-(11.5 I Mira 236d

HassfortherV19
(2000) 17h19m49.788s  -5d 13.9854 (from GSC)
= GSC 5074-545
= IRAS 17171-0510

Checking 198 Stardial-images (123 detections) from 1996 to 2000 showed GSC 
5074-545 to be a Mira-star.
In the system of stardial (between R and I, but more I) the range is 9.0 to 
smaller then 11.5.
The period is about 236 days.
The last maxima was around 2451670.

Comp star = GSC 5074-152 (BT=10.749 VT=10.161, V=10,10 B-V=0,54), adopted I = 
8,97 (calibrated with TASS).
Check Star = GSC 5074-549 (BT=10.613 VT=10.109, V=10,06 B-V=0,474), adopted I 
= 9,39 (calibrated with TASS).

Lightcurve, map, color-picture (from POSS1 and POSS2, red and blue):
http://members.aol.com/bela1998/hassfortherv19.htm

Positve observations (in I)
50574,841     10,539 
50583,81641   11,13  
50584,81368   10,8195
50586,80822   10,5   
50588,80275   10,841 
50589,80002   10,926 
50603,76179   10,445 
50604,75906   10,504 
50608,74815   10,5905
50609,74542   10,7125
50614,73176   11,293 
50616,72631   10,3585
50623,70719   11,1695
50624,70446    9,948 
50626,69899   10,0315
50627,69627   10,659 
50630,68808   10,874 
50631,68535   10,614 
50632,68262   10,2005
50634,67715   10,054 
50635,67442   9,9895 
50640,66078   10,0545
50641,65804   10,225 
50643,65258   10,265 
50645,64712   10,1965
50654,62255   9,8545 
50656,61708   10,0585
50657,61435   9,946  
50659,60889   9,856  
50660,60617   9,8435 
50663,59797   9,9925 
50666,58978   10,0685
50901,94539   9,959  
50904,93721   9,9115 
50908,92628   9,8345 
50911,91809   9,833  
50914,90991   9,547  
50916,90444   9,9845 
50921,89079   9,616  
50923,88532   9,9635 
50927,87441   10,1525
50930,86622   9,9125 
50938,84438   10,161 
50939,84164   9,835  
50950,81161   9,975  
50951,80888   10,8015
50952,80615   10,5275
50954,80068   10,258 
50955,79795   10,1375
50961,78157   10,802 
50963,77611   10,4985
50965,77065   10,942 
50967,76519   10,861 
51324,7877    10,849 
51325,78497   11,081 
51326,78223   11,8395
51334,76039   10,563 
51335,75766   10,661 
51336,75493   10,445 
51338,74947   11,0015
51344,73309   10,989 
51346,72763   10,2185
51347,7249    10,209 
51349,71943   10,6255
51362,68394   9,8415 
51363,6812    9,85   
51364,67847   9,8455 
51365,67575   10,174 
51366,67302   9,816  
51367,67029   9,8435 
51370,66209   9,6715 
51371,65936   9,6765 
51372,65663   9,7025 
51373,6539    9,9555 
51374,65117   9,719  
51375,64844   9,541  
51376,64572   9,982  
51378,64025   9,789  
51389,61023   9,717  
51390,60749   9,367  
51392,60203   9,936  
51394,59656   9,885  
51395,59383   9,58   
51632,94399   9,961  
51639,92487   9,9655 
51640,92215   9,7135 
51643,91396   9,958  
51646,90576   9,9865 
51647,90303   10,17  
51648,9003    9,889  
51649,89757   10,223 
51650,89484   10,02  
51659,87027   9,834  
51660,86753   9,8235 
51662,86208   9,843  
51664,85662   9,832  
51666,85116   9,739  
51667,84843   9,685  
51669,84296   9,639  
51670,84023   10,037 
51675,82659   9,9415 
51678,81839   10,0975
51679,81566   9,985  
51680,81293   10,305 
51688,79109   9,8095 
51690,78562   9,7365 
51694,7747    10,191 
51696,76925   10,376 
51697,76652   9,9915 
51698,76378   9,6465 
51699,76105   10,1335
51701,75559   9,7125 
51702,75286   10,028 
51704,7474    10,2135
51705,74466   9,9765 
51717,71191   10,349 
51718,70918   10,06  
51725,69006   11,495 
51726,68733   10,584 
51732,67095   10,823 
51733,66823   10,671 
51741,64638   11     
51742,64365   10,6015

Bela Hassforther, 29.12.2000

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