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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).

Crt

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            
========================================================================================================
290005    V      Crt   11h 24m 13.4s  -16o 40' 23"   EA/KE:    9.9        0.7020361       A6              
290009    Z      Crt   11h 26m  0.9s  -22o 28' 59"   EA/SD:   10.5        3.051864                        
290014    RV     Crt   11h 19m 14.7s  -19o 49' 44"   EA        9.2  :     1.170494        F8              
290024    SX     Crt   11h 55m 42.4s  -24o  3' 28"   EA/DM    13.7        1.898945                        
290030    TW     Crt   11h  1m 48.0s  -21o 50' 31"   EA        8.39                                       
290040    VV     Crt   11h 30m 26.1s  -15o 19' 20"   E:/RS:    9.48                                       
290057    AC     Crt   10h 59m 21.8s  -12o 28' 40"   EW        9.7        0.61726         A8              
========================================================================================================