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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).

Mon

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            
========================================================================================================
550013    RU     Mon    6h 54m 12.3s   -7o 35' 45"   EA/DM    10.33       3.584749        B9p             
550015    RW     Mon    6h 34m 45.9s    8o 49' 32"   EA/SD     9.26       1.90609412      B9V+F8V-G0IV    
550028    TU     Mon    7h 53m 19.8s   -3o  2' 31"   EA/SD     9.0        5.0490291       B5V+A5III:      
550029    TV     Mon    6h 28m 22.7s    5o 12' 57"   EA/SD    12.0        4.179742                        
550034    UU     Mon    6h 59m 45.1s    2o 12' 29"   EA/SD    12.8        1.04981616                      
550035    UV     Mon    7h  3m  0.0s    0o 37' 19"   RR:      12.9        0.4156799                       
550037    UX     Mon    7h 59m 16.4s   -7o 30' 18"   EA+DSC    8.22       5.9045505       A6Vep+G0-G2III-I
550040    VV     Mon    7h  3m 18.3s   -5o 44' 16"   EA/D/R    9.4        6.050829        K0IV+G2         
550042    VX     Mon    6h 31m  0.0s    9o 18' 19"   EA/SD    12.8        1.62967                         
550051    XZ     Mon    6h 53m 36.4s   -4o 13' 21"   EA/SD    13.4        0.87608335                      
550053    YZ     Mon    6h 57m 17.9s   -6o 23' 35"   EA/SD    14.1        2.055264                        
550056    AB     Mon    7h  0m 45.3s   -7o 50' 34"   EA/DS    13.8        9.51849                         
550059    AE     Mon    7h  1m 25.0s   -2o 20' 20"   EA       13.2        3.2287045                       
550067    AN     Mon    6h 59m 36.4s  -10o 37' 22"   EA       11.6        2.4458028                       
550068    AO     Mon    7h  6m 36.3s   -4o 37' 25"   EA/DM     9.6        1.884660        B3+B5           
550070    AQ     Mon    7h 14m 17.7s   -7o 13' 45"   EA/DM    10.5        2.545560        A0              
550071    AR     Mon    7h 20m 48.5s   -5o 15' 36"   EA/GS/    8.62      21.20911         G8III+K0III     
550072    AS     Mon    7h 22m 23.6s   -8o 51' 59"   EA       10.7        1.836486        A               
550073    AT     Mon    7h 24m 29.9s   -7o 33' 30"   EA/D:    10.5        2.02902         F2              
550074    AU     Mon    6h 54m 54.7s   -1o 22' 33"   EA/DS:    8.11      11.1130371       B5ea+F0         
550075    AV     Mon    7h 28m 16.1s   -4o 36' 51"   EA/SD:   10.8        6.947353        A0              
550076    AW     Mon    7h 48m 43.8s  -10o 26' 42"   EA/DS    10.5       20.820           A2ea            
550078    AY     Mon    6h 53m 18.0s    9o  8' 16"   EA/SD    13.3        2.144235                        
550080    BB     Mon    7h  1m 16.5s   -8o 41' 43"   EA/KE    10.6        0.7326988       A0              
550086    BH     Mon    6h 56m 38.7s    9o 19' 24"   EA       14.         2.324668                        
550090    BM     Mon    7h  8m 45.3s    0o 41' 46"   EA/SD    12.2        1.2449426       B1V:            
550092    BO     Mon    7h 59m 50.1s   -3o 28' 37"   EA/SD    10.0        2.2252193       A2              
550093    BP     Mon    6h 56m 55.4s    5o  1' 44"   EA/SD    13.1        2.0568384                       
550097    BT     Mon    6h 43m 47.2s   -2o  1' 13"   NA+EA     4.0  :                     pec(Nova)       
550103    BZ     Mon    6h 37m 38.2s    4o 57' 46"   EA/SD    12.1        3.451804                        
550104    CC     Mon    6h 39m 56.3s    6o 42' 29"   EA/KE:   13.7        1.401385                        
550106    CE     Mon    6h 46m 57.4s    3o  3' 26"   EA/SD    14.1        4.109430                        
550107    CF     Mon    6h 49m 22.0s    0o 23' 47"   EA       13.6        2.6104738                       
550109    CH     Mon    6h 51m 38.1s    5o 56' 13"   EA/SD    13.1        6.922312                        
550111    CK     Mon    6h 53m 46.8s    5o 36' 42"   EA/SD    12.7        2.057022                        
550116    CP     Mon    7h  0m 11.9s    4o  8' 25"   EA/SD    13.0        1.8836801                       
550127    DD     Mon    6h 45m 57.8s    0o 17' 32"   EB/KE    11.1        0.56801193      B5              
550136    DN     Mon    6h 57m 15.8s    4o 56' 15"   EB/KE    13.2        1.201372                        
550140    DR     Mon    6h 33m  1.9s    6o  8'  4"   EA       14.1        3.382750                        
550145    DW     Mon    6h 47m 51.4s   -2o 41' 19"   EA/D     12.9        3.5693492                       
550147    DY     Mon    6h 48m 56.3s   -6o  3' 55"   EA/DS:   15.2        8.6700                          
550152    EH     Mon    6h 52m  8.7s   -7o  3' 53"   EA/SD:   13.8        3.63468913                      
550153    EI     Mon    6h 52m 27.3s   -5o 45' 52"   EA/K:    13.9        0.910743                        
550159    EP     Mon    6h 56m 33.4s   -5o 21' 10"   EA/KE:   10.5        1.1480993       A2              
550162    ES     Mon    6h 59m 48.6s   -7o 25' 11"   EA/DS:   13.0       11.9977                          
550163    ET     Mon    7h  0m 52.9s   -7o 24' 18"   EA       15.2        4.343621                        
550166    EW     Mon    7h  1m 30.5s   -8o  1' 11"   EB/KE    13.8        1.239674                        
550169    EZ     Mon    7h  5m 25.4s   -5o 10' 37"   RR       12.9        0.376165                        
550172    FH     Mon    7h  8m 49.4s   -2o 32'  1"   EA/SD    14.1        1.4250750                       
550177    FN     Mon    7h 13m 46.6s   -9o  9' 47"   EA/SD    13.5        1.454686                        
550179    FP     Mon    7h 15m  8.8s   -9o 57' 48"   EA/SD    13.3        2.09850                         
550182    FS     Mon    7h 24m 42.3s   -5o  9' 15"   EA/D:    10.5        1.905868        F2              
550185    FV     Mon    6h 52m 17.7s    8o 48' 39"   EA/SD    11.5        7.51880         A2              
550186    FW     Mon    7h 57m 38.4s   -7o 11' 22"   EA/SD:    9.4        3.8735903       B5+F2           
550188    FY     Mon    6h 47m  8.6s    3o 15' 33"   EA       13.4       30.933        /                  
550189    FZ     Mon    6h 59m 22.5s   -7o 58'  1"   EA       13.8        3.7025      :                   
550190    GG     Mon    7h  2m 55.4s   -1o 16' 13"   EA       13.0        2.484740                        
550191    GH     Mon    7h  4m 41.4s   -2o 28' 19"   EA       12.8        0.70718676                      
550197    GO     Mon    6h 34m 30.5s    9o 24' 14"   EA/DS    12.5       12.4670                          
550203    GU     Mon    6h 44m 46.9s    0o 13' 18"   EW       11.8        0.89668149                      
550204    GV     Mon    6h 49m 41.6s    0o 28' 12"   EA/SD:   14.2        5.015243                        
550210    HI     Mon    6h 55m 49.1s   -4o  2' 36"   EB/KE     9.3        1.5744326       B1V             
550211    HK     Mon    6h 57m  8.2s   11o 40' 55"   EA/SD    13.8        1.835575                        
550213    HM     Mon    7h  3m  2.9s    0o 13' 49"   EB       13.4        0.40765587                      
550215    HO     Mon    7h 10m 17.0s    0o 25' 29"   EA/SD:   11.4        7.89448         A5              
550216    HP     Mon    7h 10m 30.7s   -5o 33'  0"   EA/SD    13.2        1.454610                        
550218    HR     Mon    7h 12m 32.3s   -1o 10' 31"   EA/SD    14.0        2.8442481                       
550219    HS     Mon    7h 14m 43.2s    0o 14'  3"   EA       13.1        2.77246                         
550220    HT     Mon    7h 17m 36.2s   -6o 16' 54"   EA/SD:   13.8        1.285946                        
550221    HU     Mon    7h 19m 38.7s   -2o  0' 21"   EA/SD:   12.8        5.88148                         
550222    HV     Mon    7h 20m 35.7s   -6o 29'  2"   EA/SD:   13.1        4.54851                         
550224    HX     Mon    7h 36m 47.2s  -10o 49' 41"   EA/SD    13.4        2.710563                        
550225    HY     Mon    7h 44m 51.0s   -7o 32' 49"   EB       11.5        1.56574         F8              
550229    IL     Mon    7h 55m 36.0s   -3o 34' 56"   EA/SD:   10.6        4.02631         A0              
550230    IM     Mon    6h 23m  1.5s   -3o 16' 37"   EB/KE     6.40       1.190243        B5Vp+B7         
550236    IS     Mon    6h 45m 14.2s   10o  5' 47"   EA/SD    11.5        4.04761                         
550238    IU     Mon    6h 55m  6.2s   10o 12' 42"   EA/SD    12.5        5.638605                        
550241    IX     Mon    6h 57m 47.5s   11o 48' 21"   EB/KE    12.6        1.1032704                       
550243    IZ     Mon    7h  0m 44.8s    8o 49'  3"   EB       11.9        0.7798089                       
550251    KR     Mon    7h 56m 23.0s    0o 43' 44"   S:       11.7                        G3V             
550281    MS     Mon    6h 52m 58.6s    0o  6' 12"   EA/DS    14.2       78.0003                          
550282    MT     Mon    6h 55m 58.3s   -3o 20' 59"   EA       14.0        3.536315                        
550286    MX     Mon    7h 12m 33.0s   -4o 27' 14"   EB/KE    11.4        0.68644524      A5              
550287    MY     Mon    7h 15m 50.1s   -4o 29' 45"   EA       14.3        8.6692                          
550289    NN     Mon    7h 19m 26.1s   -1o 26' 34"   EA/SD    12.7        0.912339                        
550294    NS     Mon    6h 36m  8.0s    7o 51' 44"   EW/DW    10.6        0.9399163       G0              
550316    PR     Mon    7h 38m 21.5s  -10o  4' 46"   E        11.0        1.12371     :   A               
550379    V0379  Mon    6h 51m 27.1s   -2o 45' 48"   EA       15.0        3.3745345                       
550380    V0380  Mon    6h 52m  9.2s   -1o 37' 23"   EW/DW    12.4        0.99583300      F5              
550383    V0383  Mon    7h  4m 37.9s   -1o 55' 46"   EW       14.7        0.63468810                      
550384    V0384  Mon    7h  6m 51.5s    0o 41'  2"   EB/KE    12.6        1.1184826                       
550389    V0389  Mon    7h 15m 35.9s   -1o 55' 54"   EB/KE:   14.6        1.0307      :                   
550393    V0393  Mon    6h 35m 10.1s    0o 49' 11"   EB       14.1        4.121715                        
550394    V0394  Mon    6h 36m 49.1s   -3o 52' 18"   EA       12.0        4.2650821                       
550395    V0395  Mon    6h 37m  5.6s    2o 21' 13"   EA       12.7        3.3685757                       
550396    V0396  Mon    6h 38m 36.5s    3o 36' 17"   EW/KW    12.6        0.39634498                      
550397    V0397  Mon    6h 38m 30.7s   -4o 21' 49"   EB       11.7        4.7038566                       
550404    V0404  Mon    6h 39m 29.0s    0o 44' 31"   EA/D     13.1        2.4452053                       
550442    V0442  Mon    6h 42m 19.5s    3o 48' 22"   EA/DM    11.2        1.6670128                       
550445    V0445  Mon    6h 43m  8.4s   -1o 46' 43"   EB/D     10.9        3.1310574                       
550448    V0448  Mon    6h 47m 45.0s    1o 22' 18"   EB/KE     9.4        1.1184666       A2              
550449    V0449  Mon    6h 47m 56.4s    2o 47' 56"   EA/SD:   14.2        2.33922832                      
550450    V0450  Mon    6h 49m 19.3s    0o 19' 51"   EB/DM    12.1        2.5970025       B5:             
550451    V0451  Mon    6h 49m 38.6s    1o 16'  3"   EB/DM    14.4        1.8320840                       
550452    V0452  Mon    6h 49m 55.9s   -4o 10' 21"   EA/KE:   12.6        1.5383032                       
550453    V0453  Mon    6h 50m 39.0s   -2o 22'  7"   EW       11.1        0.68702530                      
550454    V0454  Mon    6h 53m 56.1s    1o 35'  9"   EA/D     12.0        2.2475862                       
550455    V0455  Mon    6h 55m  0.9s    0o  7' 19"   EW       14.5        0.68162112                      
550456    V0456  Mon    6h 56m  4.7s    1o 22' 21"   EA/SD    13.6        1.5732993                       
550457    V0457  Mon    6h 56m 55.4s   -1o 54' 50"   EA       13.6        0.95095414                      
550458    V0458  Mon    6h 57m 49.3s    2o 11' 53"   EW/KW    13.3        0.49521352                      
550459    V0459  Mon    6h 58m 20.0s    1o 19'  0"   EB       14.5        2.8206121                       
550460    V0460  Mon    7h  0m 16.6s    2o  2' 12"   EB/KE    10.5        1.3975793                       
550461    V0461  Mon    7h  3m 10.6s    2o 33' 17"   EA/SD:   15.3        5.047058                        
550462    V0462  Mon    7h  4m 30.2s    3o 23' 39"   EA       15.3        3.4869059                       
550463    V0463  Mon    7h  5m 32.7s    2o 56'  8"   EA       14.3        1.1238384                       
550464    V0464  Mon    7h  5m 43.7s   -3o  9' 34"   EB       12.1        1.1264091                       
550465    V0465  Mon    7h  8m  9.3s    0o  3' 57"   DCEP     10.17       2.713176        G0              
550479    V0479  Mon    6h 30m 44.8s    9o 45' 25"   IN:      13.7                                        
550494    V0494  Mon    6h 36m 44.3s   -2o 51' 45"   EA       11.6        0.8388121                       
550496    V0496  Mon    6h 37m 44.7s    3o 18'  1"   EB       12.5        0.6607649                       
550498    V0498  Mon    6h 39m 44.3s    1o 57' 45"   EA       10.3        1.2363909                       
550501    V0501  Mon    6h 40m 41.7s   -1o  6' 40"   EA/D     12.7        7.021171                        
550502    V0502  Mon    6h 43m 26.2s   -2o 29' 50"   EB:/DS   12.2       27.43        :                   
550505    V0505  Mon    6h 45m 50.0s    2o 29' 57"   EB/GS/    7.15      53.7805          B5eaIb+B5       
550506    V0506  Mon    6h 46m 36.5s   -3o 50' 12"   EA       13.3       32.000        /                  
550507    V0507  Mon    6h 46m 58.8s    1o 19' 34"   EA/KE:   13.7        1.0790233                       
550509    V0509  Mon    6h 47m 10.7s   -1o  2' 15"   EA/SD:   15.1        4.917424                        
550513    V0513  Mon    6h 47m 45.9s    1o  6' 40"   EA/SD    14.7        3.4341399                       
550514    V0514  Mon    6h 49m 18.6s    0o  3' 32"   EW       12.8        0.55737224                      
550515    V0515  Mon    6h 49m 21.1s   -2o  6' 49"   EA       12.3        0.87397300                      
550521    V0521  Mon    6h 55m 53.6s    0o 14' 24"   EA/DM    10.0        2.9706633       A0              
550524    V0524  Mon    6h 59m  1.2s    2o 12' 51"   EW/KW    14.4        0.28361714                      
550527    V0527  Mon    7h  2m  5.6s   -1o 54' 23"   EA       12.2        0.8245743                       
550528    V0528  Mon    7h  2m 36.3s    1o 59' 59"   EA/SD:   12.8        1.4237651                       
550530    V0530  Mon    7h  3m 15.8s    3o 14' 54"   EW       12.4        0.52552935                      
550532    V0532  Mon    7h  4m 30.6s    0o 21'  5"   EW:/KW   12.2        0.46698470                      
550536    V0536  Mon    7h 13m 55.6s   -2o 54' 30"   E         9.1       31.035        /  B4V             
550560    V0560  Mon    6h 46m 28.8s    0o 15' 35"   EA       13.9        2.0728192                       
550578    V0578  Mon    6h 32m  0.6s    4o 52' 41"   E         8.54       2.420           B0V+B0V         
550634    V0634  Mon    7h 17m 10.1s   -1o 44' 19"   E        12.0        2.1141                          
550635    V0635  Mon    8h  1m 44.5s   -8o 35' 35"   EA/DM     7.6        1.807805        F5+A2           
550639    V0639  Mon    6h 37m 20.1s   11o 36' 32"   EA/SD    16.0        2.66                            
550680    V0680  Mon    6h 59m 30.7s    9o 19'  0"   RR        9.6                                        
550681    V0681  Mon    7h 52m 22.0s   -1o 17' 25"   EA/SD    13.                                         
550684    V0684  Mon    6h 40m 38.4s    9o 47' 16"   EA/DM     8.44                                       
550710    V0710  Mon    7h 46m 51.8s   -4o 41' 37"   EW/KW    14.57                                       
550714    V0714  Mon    6h 29m 12.4s    4o 44' 40"   EW       11.5                                        
550730    V0730  Mon    6h 34m 40.6s   -8o 36' 29"   EA:       8.85                                       
550753    V0753  Mon    7h 10m 57.9s   -3o 52' 43"   EB:       8.30                                       
550788    V0788  Mon    7h 24m 59.3s    0o 24' 44"   EW:      13.1                                        
550842    V0842  Mon    6h 48m 43.5s    5o  2'  1"   EB        9.74                                       
550843    V0843  Mon    6h 58m 10.9s   10o 13' 58"   EW       12.4                                        
550864    V0864  Mon    7h 15m  8.4s   -4o 44' 21"   EW        9.9        0.358427        G0              
550868    V0868  Mon    7h 39m  4.8s   -2o 39'  6"   EB        8.9        0.63772                         
550871    V0871  Mon    8h  6m 17.3s   -4o 26' 47"   EA        8.84       4.33593         A3/5m           
550880    V0880  Mon    6h 55m 37.7s   -9o 29' 23"   EW        8.21       0.372457        G0              
550881    V0881  Mon    6h 57m 33.6s    5o  6' 42"   EA       11.48       1.69841         A               
550900    V0900  Mon    6h 57m 22.2s   -8o 23' 18"   FU        9.8                                        
550906    V0906  Mon    6h 37m 19.7s    7o 26' 24"   EA       10.62       3.06895         A2              
550910    V0910  Mon    6h 40m 13.7s    4o  9' 40"   EA       10.89       2.95379         F8              
550922    V0922  Mon    6h 58m 29.9s    8o 41' 17"   EA       10.87       2.087092        A5+A2           
550925    V0925  Mon    7h  1m  5.1s   -3o 58' 16"   EA        8.30       5.95575         B9              
550935    V0935  Mon    7h 17m 10.2s   -1o 32' 14"   EA        9.7        5.99381         A0              
550936    V0936  Mon    7h 19m 10.4s   -1o 23'  5"   EW       13.7        0.368962                        
550953    V0953  Mon    8h  7m 37.2s    0o 26' 14"   EW:      13.8        0.426940                        
========================================================================================================