O-C Database

 

Current total number of extrema: 146467

 

Structure of the datafiles

 

Generally, the structure of the *.xls datafiles is:

Column A - The name of the variable star

Column B - The J.D. of Min / Max

Column C - Note (if there are any)

Column D / E- The Reference/s and the page (if available).

Column E – The type of the observation ( vis , pg , pe, CDD etc.) If  the type of the observation is not available, this cell is blank.

Column F - The name of the Author/s of the observations, or the name of the Editor/s of the paper, or the name of who have obtained the extrema from the photographic plates.

Sometime the Author/s of the observations of long period variable stars wrote, in addition, the J.D. of the minimum of light of the variable star. In some datafiles this is indicated in the column "note" .

Column G - The year of publication of the paper.

 

The datafiles available are

 

----- Datafile from the INFORMATION BULLETIN OF VARIABLE STARS from nb. 1 (1961) to nb. 6100 (2014). The file contains 76680 J.D. of extrema (2350 Kb) - DOWNLOAD IBVS.ZIP     

----- Datafile from the MITTEILUNGEN der Bruno H. Burgel - Sternwarte Hartha from nb. 1 (1968) to nb. 22 (1989) after this number the publication was stopped. The file contains 4331 J.D. of extreme (104 Kb) - DOWNLOAD MITHARTHA.zip

----- Datafile from the MITTEILUNGEN UBER VERANDERLICHE STERNE - Sonneberg - from band 1 (1942) to band 12 (1991). The file contains 30517 J.D. of extrema (958 Kb) - DOWNLOAD MVS.zip

NEW NEW NEW

Thanks to Massimiliano Martignoni I learned that the MVS are published again since the 2013. Here the new file with 1072 new extrema.

 

----- Datafile from the VEROFFENTLICHUNGEN DER STERNWARTE IN SONNEBERG from band 1 (1947) to band 10 (1990). After this number the publication was stopped. The file contains 25176 J.D. of extrema (698 Kb) - DOWNLOAD VSS.zip

----- Datafile from the RICERCHE ASTRONOMICHE publication of the Vatican Observatory. From Vatican Variable 1 (1950) to Vatican Variable 490 (1973). Some variables are missing and they are VV 26 , 27 , 28 and from VV 68 to VV 77 . The file contains 4449 J.D. of extrema (141 Kb) - DOWNLOAD RICERCHE ASTRONOMICHE.zip

----- Datafile from the CONTRIBUTIONS OF THE NICHOLAS COPERNICUS OBSERVATORY AND PLANETARIUM IN BRNO No 32 collecting 2512 minima of Eclipsing Binaries observed in the years 1994 - 2000 - DOWNLOAD CONTRIBUTION32.zip (66 Kb)

----  Datafile from the HARTHAER BEOBACHTUNGS-ZIRKULAR (HBZ) Herausgegeben von der Bruno H.Burgel-Sternwarte Hartha  from Nr. 1 (1959) to Nr. 120 (1999). The file contains 1370 J. D. Of extrema of variable stars.   DOWNLOAD HBZ.zip (43 Kb)

 

 Please report to me any errors or inaccuracies in the datafiles for the appropriate corrections.

 

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