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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).

CrB

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            
========================================================================================================
270004    U      CrB   15h 18m 11.4s   31o 38' 49"   EA/SD     7.66       3.45220133      B6V+F8III-IV    
270012    RT     CrB   15h 38m  3.0s   29o 29' 14"   EA/AR:   10.20       5.1171590       G0              
270015    RW     CrB   15h 39m 15.2s   29o 37' 20"   EA/SD:   10.22       0.7264114       F2V             
270028    TU     CrB   16h  9m 44.3s   39o 34' 32"   EA/SD:   12.8        1.6136929                       
270030    TW     CrB   16h  6m 50.7s   27o 16' 35"   EB/KE    10.5        0.58887327                      
270037    UX     CrB   16h 16m 54.3s   31o  7' 21"   EA       13.12                                       
270052    YY     CrB   15h 50m 32.4s   37o 50'  8"   EW        8.64                                       
270066    AM     CrB   16h 10m 50.4s   37o 28' 57"   EA       12.8                                        
270071    AR     CrB   15h 59m 18.6s   27o 52' 15"   EW       10.84       0.397352                        
270072    AS     CrB   16h  0m 14.5s   35o 12' 32"   EW       11.34       0.380658                        
270075    AV     CrB   16h 14m 58.6s   30o 16' 36"   EW       11.87       0.308193                        
270076    AW     CrB   16h 15m 20.2s   35o 42' 26"   DSCT:    11.08       0.180465                        
270078    AY     CrB   15h 22m 35.8s   31o  8'  3"   EW       13.5        0.46046                         
270082    BD     CrB   15h 31m 22.4s   35o 52' 54"   EW       14.2        0.356866                        
270095    BR     CrB   15h 53m  4.3s   36o 18' 45"   EW        9.88       0.76695         F0              
270101    BX     CrB   16h  2m 29.6s   37o 33' 30"   EW       12.25       0.35884                         
279001    alf    CrB   15h 34m 41.3s   26o 42' 53"   EA/DM     2.21      17.359907        A0V+G5V         
========================================================================================================