News, April 2021: we are in the final stages of preparing a new interface to the O-C database with interactive O-C diagrams and other features, which should be released soon. At that point this version will be archived.
TIDAK - TIming DAtabase at Krakow
O-C DIAGRAMS AND UP-TO-DATE LINEAR ELEMENTS
OF ECLIPSING BINARIES
contact: tidak@astro.as.up.krakow.pl
And | Ant | Aps | Aqr | Aql | Ara | Ari | Aur | Boo | Cae | Cam | Cnc | CVn | CMa | CMi | Cap | Car | Cas | Cen | Cep | Cet | Cha | Cir | Com | Col | CrA | CrB | Crv | Crt | Cru | Cyg | Del | Dor | Dra | Equ | Eri | For | Gem | Gru | Her | Hor | Hya | Hyi | Ind | Lac | Leo | LMi | Lep | Lib | Lup | Lyn | Lyr | Men | Mic | Mon | Mus | Nor | Oct | Oph | Ori | Pav | Peg | Per | Phe | Pic | Psc | PsA | Pup | Pyx | Ret | Sge | Sgr | Sco | Scl | Sct | Ser | Sex | Tau | Tel | Tri | TrA | Tuc | UMa | UMi | Vel | Vir | Vol | Vul
The successive columns of tables contain (based on GCVS):
- The GCVS star number:
- The name of a star in constellation order and link to the diagram
- RA and Dec
- Type of variability
- Magnitude in V
- GCVS Period in days
- Spectral type
For a small number of stars the ephemeris for the diagram is taken from the literature.
Based on the last trend on the O-C diagram, a linear ephemeris and current orbital phase is calculated based on YOUR COMPUTER TIME! (If there is enough data after 1960)
The database is described in the paper: "Up-to-date Linear Elements of Close Binaries", J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210. Please include a citation when using the database for your research. This project was partly supported by KBN grant No 2 P03D 006 22.