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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).

Vel

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            
========================================================================================================
850002    S      Vel    9h 33m 13.2s  -45o 12' 31"   EA/SD     7.74       5.9336475       A5Ve+K5IIIe     
850010    RR     Vel   10h 22m  4.1s  -42o 21' 34"   EA/SD:   10.7        1.8541803       A               
850016    RX     Vel    9h 27m 32.6s  -51o  4' 15"   EA/SD    10.4        3.11182966      A2              
850050    XY     Vel   11h  4m 58.9s  -55o 39'  5"   EA       11.5        2.51037                         
850052    YY     Vel   10h 32m 10.4s  -56o 14' 57"   EA/D     10.6        4.1636                          
850053    YZ     Vel   10h 37m  5.1s  -56o  2'  2"   EA/D     12.2        5.488342                        
850054    ZZ     Vel   10h 37m 54.1s  -55o 56' 37"   EA/DM     9.93       2.87615         A0V             
850055    AA     Vel   10h 51m 17.0s  -56o 24' 37"   EB/DM     9.68       2.33432         B2              
850057    AC     Vel   10h 46m 18.4s  -56o 49' 46"   EB/DM     8.6        4.5622426       B3III/V+B3III/V 
850064    AK     Vel    8h  5m 53.9s  -46o 36' 57"   EA       13.0        0.6409118                       
850065    AL     Vel    8h 31m 11.3s  -47o 39' 57"   EA/GS/    8.60      96.107           K0III+A3III/V   
850068    AO     Vel    8h 11m 53.9s  -48o 44' 46"   EA/DM     9.35       1.5845993       A1p(Si)V        
850070    AQ     Vel   10h 29m 26.4s  -55o  3' 14"   EA/KE:   11.5        1.042499                        
850071    AR     Vel   10h 40m  3.6s  -56o 44' 27"   EA/D     12.0        3.21275                         
850073    AT     Vel    8h  4m 39.7s  -45o  1' 26"   EA/DM    12.1       11.7971                          
850076    AW     Vel    8h  8m 11.7s  -44o 20' 54"   EA/DM:   11.5        1.99246                         
850078    AY     Vel    8h 20m 17.3s  -43o 52' 57"   EB/DM:    9.46       1.617677        B9IV/V          
850079    AZ     Vel    8h 22m 51.9s  -44o 25' 45"   EA       12.7        0.77577765                      
850081    BC     Vel    8h 43m 20.6s  -44o 39'  1"   EA/D:    11.8        1.1735824       F8              
850083    BE     Vel    8h 50m 16.4s  -48o 59' 20"   EB       12.4        0.6946717                       
850084    BF     Vel    8h 56m 27.0s  -39o 58' 36"   EA/SD    11.4        0.70402                         
850090    BM     Vel    8h 12m  7.8s  -49o  0' 54"   EA/SD    12.9        2.710900                        
850092    BO     Vel    8h 15m 18.7s  -45o 46' 44"   EW/KW    13.8        0.3344076                       
850093    BP     Vel    8h 18m  5.8s  -45o 23' 26"   EW/KW    12.9        0.26498597                      
850097    BT     Vel    8h 35m  1.7s  -48o 41' 54"   EW/KW    14.0        0.3020964                       
850098    BU     Vel    8h 40m  6.3s  -42o 49' 43"   EW       10.49       0.5162856       F0              
850100    BW     Vel    8h 45m 29.9s  -47o 16' 51"   EB       14.0        0.4905399                       
850101    BX     Vel    8h 48m  5.7s  -42o 39' 32"   EA/SD    13.2        1.344807                        
850102    BY     Vel    9h  2m 51.7s  -49o 28' 16"   EA       10.6        3.455370                        
850103    BZ     Vel    9h 14m 20.8s  -49o 46' 19"   EB/KE    10.3        1.262417        A0              
850108    CG     Vel   10h 39m 21.9s  -42o 50' 49"   EA/SD    10.6        3.685                           
850112    CL     Vel   10h 54m 25.4s  -56o 35' 31"   EA/SD    13.3        0.8577303                       
850118    CR     Vel    9h 28m 36.7s  -51o  5' 50"   EA/SD:   13.8        1.4411689                       
850122    CV     Vel    9h  0m 38.0s  -51o 33' 20"   EA/DM     6.69       6.889494        B2.5V+B2.5V     
850123    CW     Vel    9h  2m 21.3s  -52o 50' 29"   EA/SD    10.10       2.360927        B5III/IV        
850126    CZ     Vel    9h 10m 44.5s  -50o 42' 41"   EA/D     10.8        5.19287                         
850129    DF     Vel    9h 15m 29.5s  -50o 11' 24"   EA/SD    13.3        0.7644785                       
850131    DH     Vel    9h 17m 10.2s  -45o 32' 50"   EB/KE    13.5        1.286856                        
850134    DL     Vel    9h 18m  5.5s  -46o  4' 31"   EA       11.8        0.56355802                      
850136    DN     Vel    9h 19m 37.7s  -45o 40' 48"   EA/GS/    9.57      12.8977          A0III/IV        
850137    DO     Vel    9h 21m 41.8s  -51o 48' 33"   EA/SD    12.8        3.277127                        
850139    DQ     Vel    9h 30m 34.2s  -50o 11' 54"   EA       10.7        6.08337                         
850141    DS     Vel    9h 34m 27.1s  -52o 32' 23"   EW       10.5        0.721565                        
850143    DU     Vel    9h 45m 42.1s  -49o 13' 30"   EA       10.8        1.552563                        
850146    DX     Vel    9h 51m 46.0s  -50o 53' 24"   EA/SD:   10.2        1.117296        A5              
850148    DZ     Vel    9h 54m 36.6s  -49o 59' 56"   EA/D     10.5        2.81044         G0              
850155    EL     Vel    8h 30m 50.3s  -40o  4' 22"   EA/D     11.0        2.758420                        
850158    EO     Vel    8h 39m  3.3s  -43o 43' 56"   EA/DM    11.37       5.32966         A0              
850160    EQ     Vel    8h 43m 46.6s  -45o  5' 12"   EA/SD    11.0        1.0802672       B7              
850163    ET     Vel    9h  9m  2.5s  -46o 37' 50"   EA/D     11.9        3.080858                        
850164    EU     Vel    9h 13m  3.6s  -44o 56' 57"   EW/KW    13.5        0.3743755                       
850165    EV     Vel    9h 13m 53.3s  -50o 54' 35"   EA/SD:   12.6        4.543668                        
850168    EY     Vel    9h 20m 46.5s  -51o 42' 45"   EA       12.5        4.07908                         
850176    FM     Vel    9h 47m 42.3s  -53o 28' 11"   EW/KW    12.2        0.3895262                       
850180    FQ     Vel    9h 57m 43.7s  -50o 13' 40"   EA/SD:   12.7        3.58324                         
850183    FT     Vel    8h 42m 30.6s  -51o 25' 12"   EB/SD:   10.1        1.05975                         
850184    FU     Vel    9h 33m 50.6s  -55o 55'  6"   EA/SD:   10.3        2.446805        A0              
850185    FV     Vel    9h 46m  6.2s  -44o  8' 22"   EA       10.82       1.521100                        
850186    FW     Vel   10h 45m 25.9s  -52o 24' 20"   EA/DM     9.5        2.384082        A2              
850187    FX     Vel    8h 32m 35.8s  -37o 59'  2"   EB/KE     9.70       1.052565        Be              
850190    GG     Vel    9h 12m 49.8s  -43o 29' 16"   EA        8.72       1.4752160       A0V             
850202    GT     Vel    9h 10m 37.7s  -43o  4' 56"   EA        9.7                        A2/3III/IV      
850231    IN     Vel    9h 37m 13.0s  -42o  1' 15"   RS:       8.84                       K2IIIp          
850234    IQ     Vel   10h  4m 12.7s  -40o 46' 26"   EA/SD    12.81       3.9262974       A2-5            
850268    LT     Vel    8h 48m 13.9s  -44o 52' 22"   EB        9.95                                       
850295    NT     Vel    8h 34m 24.4s  -54o 40'  3"   EA        8.33                                       
850299    NX     Vel    8h 39m  9.5s  -40o 25'  9"   E         7.25                                       
850315    PQ     Vel    9h  5m 23.4s  -42o 10'  2"   EA        7.66                                       
850318    PT     Vel    9h 10m 57.7s  -43o 16'  3"   EA        7.05                                       
850340    V0340  Vel   10h 18m 12.0s  -50o 49' 25"   E:        7.89                                       
850356    V0356  Vel   10h 47m 55.5s  -52o 14' 46"   EB        6.73                                       
850403    V0403  Vel    8h 46m 29.1s  -40o 49' 28"   EA        9.63       7.2027          A0              
850404    V0404  Vel    8h 59m 14.9s  -48o 49' 49"   EA        9.37      11.4248          B0IVnp          
850405    V0405  Vel    9h  4m 38.4s  -41o  3' 53"   EA        8.89      10.31168         G3V             
850406    V0406  Vel    9h  7m 23.3s  -52o 29' 57"   EA        9.40       2.0340          B8V             
850407    V0407  Vel    9h 25m  2.3s  -55o 29' 20"   EB        9.62       1.438215        A2              
850409    V0409  Vel    9h 39m 22.9s  -54o 24' 56"   EA       12.45       2.78678                         
850414    V0414  Vel   10h  3m  9.5s  -47o 24'  3"   EA       13.7        4.414288                        
850428    V0428  Vel   10h 28m 31.6s  -49o 28' 12"   EA:      11.03       0.85496                         
850431    V0431  Vel   10h 41m 40.7s  -51o 38' 43"   EA       12.72       3.76173                         
850432    V0432  Vel   10h 42m  6.5s  -42o 52' 41"   EA        9.04       1.46857         F2V             
850440    V0440  Vel   10h 54m 43.6s  -45o 36' 10"   EA        9.47       2.354858        A7III           
850451    V0451  Vel    8h 34m  8.1s  -44o 32' 41"   EB        7.46       7.8553          B2V             
850454    V0454  Vel    8h 38m  9.0s  -40o  4' 52"   EA        7.55       1.13492         B3V             
850461    V0461  Vel    8h 42m 43.7s  -45o 33' 18"   EA+BE     8.26       1.50941         B2:Vn           
850469    V0469  Vel    8h 45m 15.6s  -53o 51' 28"   EA        9.47       1.031615        A2/3mA7-A8      
850479    V0479  Vel    9h  4m 51.4s  -37o 48'  9"   EA        9.14       2.18882         A2IV            
850483    V0483  Vel    9h 11m 42.3s  -46o 53' 10"   EA        8.23       2.61362         A4V             
850484    V0484  Vel    9h 12m 24.9s  -38o  3'  7"   EA        9.87       2.60431         B9.5V           
850496    V0496  Vel    9h 50m 47.6s  -44o 41' 29"   EA        9.15       2.45506         A0V             
850497    V0497  Vel    9h 51m 31.9s  -49o 31' 24"   EA        9.52      12.43617         A3/5IV          
850501    V0501  Vel    9h 56m 12.8s  -48o 10' 29"   EA        9.55       2.01571         A1V             
850503    V0503  Vel   10h  6m 53.7s  -40o 53' 23"   EA        8.93       3.45291         A1IV            
850516    V0516  Vel   10h 33m 59.5s  -47o 31' 50"   EA        8.48       2.86839         A0V             
859004    del    Vel    8h 44m 42.2s  -54o 42' 32"   EA        1.96                                       
========================================================================================================