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O-C DIAGRAMS AND UP-TO-DATE LINEAR
ELEMENTS OF ECLIPSING BINARIES

When using this database please include a citation to: J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210.

Diagrams are computed for an average ephemerides presented in left-bottom corner of picture.
For small number of data ephemerides for diagram is taken from literature.
Based of last trend on O-C daigrams, an linear ephemerides and current orbital phase is calculated based on YOUR COMPUTER TIME !!!! (If there is enough data after 1960).

Equ

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

From GCVS:
Nr.GCVS STAR  CONST.   RA   (2000)    DEC         Type   V [mag]     P [days]          Spec            
========================================================================================================
350002    S      Equ   20h 57m 12.8s    5o  4' 49"   EA/SD     8.0        3.4360969       B9V+F9III-IV    
350006    W      Equ   21h 15m 52.6s   12o 23' 19"   EA/DM    11.8        4.236855        A7              
350018    RZ     Equ   21h 17m 52.9s    9o 50' 10"   EA/SD    12.0        1.96143                         
350022    SV     Equ   20h 57m 18.9s    5o 48' 52"   EW/KE     9.25       0.881           A0              
350031    TX     Equ   21h 20m 42.1s    5o 41' 43"   EA       11.44       5.4788                          
350039    UZ     Equ   21h 14m 40.5s   12o 50' 52"   EB        9.15       0.486707        F0              
========================================================================================================