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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).

Lyr

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            
========================================================================================================
520014    RV     Lyr   19h 16m 18.0s   32o 25' 15"   EA/SD    11.5        3.599050        A               
520027    TT     Lyr   19h 27m 36.3s   41o 42'  6"   EA/SD     9.34       5.243727        B2V             
520033    TZ     Lyr   18h 15m 49.7s   41o  6' 38"   EB/D     10.87       0.5288269       F5V             
520039    UZ     Lyr   19h 21m  8.9s   37o 56' 12"   EA/SD     9.9        1.8912727       B9V             
520055    AA     Lyr   19h  5m 48.9s   29o  4' 44"   EB/SD    13.4        1.073329        F               
520062    AH     Lyr   19h 13m  1.1s   27o 16' 38"   EB/SD    12.0        1.0307101                       
520064    AK     Lyr   19h 15m 19.6s   27o  0' 58"   EA/SD    12.8        2.0854648                       
520091    BN     Lyr   19h  4m 21.9s   29o 15' 10"   EA/SD    14.7        2.282287                        
520099    BV     Lyr   19h 17m 42.9s   32o 57' 31"   EA       12.1        1.8296477                       
520105    CD     Lyr   18h 35m 19.9s   28o 52' 54"   EA/SD    14.7        4.832198                        
520129    DF     Lyr   18h 53m 34.3s   28o  4' 20"   EW/D:    13.1        0.577128    :                   
520142    DT     Lyr   19h  3m 22.5s   29o 53' 14"   EA/SD:   14.0        0.787904                        
520143    DU     Lyr   19h  3m 51.1s   30o  8'  5"   EB/D     13.1        0.83700         A               
520148    DZ     Lyr   19h 10m 53.5s   27o  7' 17"   EA/SD    14.7        1.8364125                       
520163    ET     Lyr   19h 22m 16.2s   34o 51' 22"   EA/SD    13.         2.3022064                       
520165    EV     Lyr   19h 26m 36.3s   39o  2' 17"   EA/SD:   13.                                         
520166    EW     Lyr   18h 33m 15.6s   37o 45' 13"   EA/SD    11.2        1.948723        F0              
520167    EX     Lyr   18h 37m 11.6s   26o  9' 20"   RRC      12.0        0.3586324                       
520171    FG     Lyr   18h 56m 19.0s   32o 11' 28"   EA/SD    12.4        2.871825                        
520172    FH     Lyr   19h 11m 29.9s   36o 39' 36"   EA/SD    12.5        1.589240                        
520175    FL     Lyr   19h 12m  4.9s   46o 19' 27"   EA/DM     9.27       2.1781544       G0V             
520178    FO     Lyr   19h 18m  2.6s   27o  1' 14"   EA/SD    13.6        2.6828053                       
520188    FY     Lyr   18h 39m 34.7s   30o  6' 47"   EA/DS    14.1       12.23645                         
520208    GZ     Lyr   19h 10m 31.3s   27o 55'  1"   EA/SD    13.3        1.3294322                       
520216    HP     Lyr   19h 21m 39.1s   39o 56'  8"   EB/GS    10.5      140.75            A6              
520220    HT     Lyr   18h 15m 12.1s   38o 18'  8"   EB       13.2        0.8619849                       
520225    HY     Lyr   18h 17m 44.0s   31o 37' 44"   EB/KE    13.8        0.56        :                   
520233    IP     Lyr   18h 23m 24.4s   33o 11'  7"   EB       13.2        0.4728057                       
520234    IQ     Lyr   18h 23m 48.5s   32o 43' 22"   EA       14.6        1.412782                        
520240    IW     Lyr   18h 28m  1.3s   38o 59' 53"   EA/SD    13.1        0.798509                        
520242    IY     Lyr   18h 29m 40.8s   31o  0'  1"   EW/KE:   13.8        0.6531646                       
520244    KK     Lyr   18h 30m  7.5s   34o 18'  1"   EA/SD    14.4        2.26235                         
520253    KT     Lyr   18h 32m 42.2s   32o 58' 55"   EB       14.7        0.581550                        
520274    LZ     Lyr   18h 41m 26.2s   32o 58' 47"   EA/SD    12.0        1.6111788                       
520276    MN     Lyr   18h 42m 38.0s   35o  4' 55"   EB/KE    13.8        0.544076                        
520288    MZ     Lyr   18h 54m 32.9s   26o 52' 34"   EW       13.3        0.9673972                       
520294    NS     Lyr   19h 11m 14.0s   36o 10' 35"   EA/SD    14.0        2.7970                          
520297    NV     Lyr   19h 15m  2.7s   33o 50' 47"   EA/SD    12.8        1.5414264                       
520300    NY     Lyr   19h 16m 36.9s   34o 23' 41"   EW/KW    12.7        0.44079534                      
520307    OT     Lyr   19h  8m 11.6s   29o 13' 58"   EA       13.9        0.471095                        
520315    PQ     Lyr   19h 17m 39.7s   34o 27' 36"   EA/DS    14.8        9.072459                        
520317    PS     Lyr   19h 18m 22.6s   27o 17'  1"   EA/SD    11.3        1.4469824                       
520320    PV     Lyr   19h 19m  2.6s   31o 36' 36"   EA/SD:   12.0        1.1986321                       
520323    PY     Lyr   19h 20m 26.0s   28o 56' 44"   EW/KW    12.5        0.3857582       F0:             
520325    QQ     Lyr   19h 21m  2.0s   31o 44'  0"   EB/SD:   14.5        1.7467022                       
520328    QT     Lyr   19h 22m 20.5s   30o 39'  3"   EB/KE    14.0        1.24607972                      
520329    QU     Lyr   19h 23m 23.8s   34o 44'  7"   EW/KE    12.7        1.22303638                      
520336    V0336  Lyr   18h 27m 47.3s   33o  2' 24"   EA/SD    14.9        1.90513                         
520341    V0341  Lyr   18h 42m 54.8s   38o 45' 15"   EA/SD    14.2        1.414497                        
520359    V0359  Lyr   19h  2m 18.4s   31o  0' 46"   EA/SD    14.5        7.24077                         
520361    V0361  Lyr   19h  2m 28.1s   46o 58' 58"   E        14.3        0.309616                        
520364    V0364  Lyr   19h  9m 40.0s   30o  5' 51"   EA/SD    14.9        3.705837                        
520371    V0371  Lyr   19h 16m 59.0s   26o 58'  3"   E        13.4        3.0          /                  
520373    V0373  Lyr   19h 17m 12.2s   31o 44' 41"   EA/SD    15.5        1.3575237                       
520376    V0376  Lyr   19h 20m 25.4s   31o 39' 30"   EA       14.3        0.766771                        
520382    V0382  Lyr   19h 24m 53.2s   31o  2' 11"   EA/SD    16.3        2.8608674                       
520400    V0400  Lyr   19h 13m 52.7s   38o  6' 56"   RRAB:    13.5        0.3201645                       
520401    V0401  Lyr   19h 14m 15.7s   38o 26' 58"   E        13.6        0.839361    :                   
520403    V0403  Lyr   19h 17m 47.9s   29o 48'  3"   EA/SD:   14.7        1.8771881                       
520404    V0404  Lyr   19h 19m  6.0s   38o 22'  1"   EB/SD:   12.2        0.73094585                      
520406    V0406  Lyr   18h 32m 16.3s   41o 50' 46"   EW/KE    12.5        1.51130                         
520411    V0411  Lyr   19h  6m 27.6s   34o 40' 21"   EW:/KE   13.5        0.5826311                       
520412    V0412  Lyr   19h  6m 48.5s   29o 16' 40"   EA/KE    13.7        0.931469                        
520417    V0417  Lyr   19h  8m 39.1s   30o 43'  9"   EW/KW    14.9        0.300660                        
520423    V0423  Lyr   19h 11m 55.4s   33o 13'  7"   EW/KW    15.0        0.416546                        
520429    V0429  Lyr   19h 13m 37.6s   34o 29' 10"   EA/SD    14.5        1.067594                        
520431    V0431  Lyr   19h 14m  0.4s   33o 35' 38"   EW/KW    14.3        0.446367                        
520449    V0449  Lyr   19h  7m 37.1s   44o  0' 20"   E        12.5                                        
520461    V0461  Lyr   19h 27m 55.3s   41o 33' 35"   EA/SD:   14.0        3.72315                         
520466    V0466  Lyr   18h 18m 46.9s   32o  4'  6"   E:/SD:   13.2                                        
520477    V0477  Lyr   18h 31m 18.5s   26o 56' 12"   EA/PN    14.3        0.4717294                       
520481    V0481  Lyr   18h 47m 46.4s   43o 43' 43"   E        12.8                                        
520507    V0507  Lyr   18h 40m 48.5s   28o  1' 38"   EW       14.21                                       
520512    V0512  Lyr   19h  6m 22.8s   45o 41' 55"   EA       13.2                                        
520542    V0542  Lyr   18h 58m  1.9s   38o 15' 58"   EA        5.83                                       
520563    V0563  Lyr   18h 45m  6.6s   40o 11' 12"   EW       10.96                                       
520569    V0569  Lyr   18h 15m 21.9s   39o  5' 46"   EA       11.9                                        
520571    V0571  Lyr   18h 21m  2.0s   44o 38' 43"   EA       11.7                                        
520572    V0572  Lyr   18h 21m 38.3s   42o 10'  8"   EA       10.6                                        
520573    V0573  Lyr   18h 23m  1.3s   40o  8' 35"   EW       10.8                                        
520574    V0574  Lyr   18h 27m 12.2s   36o 14' 37"   EW       12.01                                       
520576    V0576  Lyr   18h 39m  7.8s   41o 56' 54"   EB       12.3                                        
520577    V0577  Lyr   18h 42m 41.4s   45o 29'  3"   EW       14.5                                        
520579    V0579  Lyr   18h 50m 52.3s   43o 40' 12"   EW       12.77                                       
520580    V0580  Lyr   18h 51m 10.4s   35o 35' 57"   EW       12.79                                       
520581    V0581  Lyr   18h 53m 43.5s   37o 23' 35"   EW       12.7                                        
520582    V0582  Lyr   18h 55m 38.2s   40o 58' 57"   EW       13.44                                       
520583    V0583  Lyr   19h  5m 33.8s   39o 20'  4"   EA       12.8                                        
520589    V0589  Lyr   19h 25m 31.8s   42o 51' 13"   EW       11.6                                        
520591    V0591  Lyr   18h 24m 36.8s   38o 17' 34"   EW       13.28       0.300395                        
520592    V0592  Lyr   18h 30m 53.7s   34o  8' 10"   EW       12.41       0.355682                        
520594    V0594  Lyr   18h 45m 21.8s   45o 53' 29"   EW:      14.         0.256002                        
520596    V0596  Lyr   18h 46m 55.1s   45o  0' 52"   EW       12.09       0.299632                        
520635    V0635  Lyr   18h 15m 11.1s   32o 29' 27"   EA/SD    14.4        3.221214                        
520648    V0648  Lyr   18h 23m 45.5s   41o  5' 48"   EW       13.70       0.3687526                       
520649    V0649  Lyr   18h 24m 26.9s   45o 39'  1"   EW       14.06       0.292258                        
520653    V0653  Lyr   18h 30m 16.5s   41o  5'  8"   EW       11.21       0.468816                        
520656    V0656  Lyr   18h 30m 31.5s   33o 55' 29"   EW       13.2        0.40981                         
520658    V0658  Lyr   18h 33m 36.1s   46o 35' 42"   EW       11.25       0.330259                        
520664    V0664  Lyr   18h 38m 24.5s   42o 36' 32"   EW       12.77       0.34089                         
520740    V0740  Lyr   18h 36m 41.1s   27o 55' 23"   EW       11.0        0.328717                        
520745    V0745  Lyr   18h 54m 22.2s   36o 51'  8"   EA        8.77       4.30216         B9-A0           
529002    bet    Lyr   18h 50m  4.8s   33o 21' 46"   EB        3.25      12.913834        B8II-IIIep      
========================================================================================================