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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).

Per

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            
========================================================================================================
630009    Z      Per    2h 40m  3.2s   42o 11' 58"   EA/SD     9.7        3.0563066       A0V+G0IV-V      
630012    RT     Per    3h 23m 40.4s   46o 34' 36"   EA/SD    10.46       0.84940032      F2V             
630014    RV     Per    4h 10m 38.0s   34o 15' 55"   EA/SD    10.3        1.9734926       A2              
630015    RW     Per    4h 20m 16.8s   42o 18' 52"   EA/D      9.68      13.198904        A5IIIe+G0III    
630017    RY     Per    2h 45m 42.1s   48o  8' 38"   EA/SD     8.50       6.8635663       B5Vea+F6IV      
630020    ST     Per    3h  0m  5.7s   39o 11' 25"   EA/SD     9.52       2.648315        A3V+G-K         
630047    WY     Per    3h 38m 24.2s   42o 40' 39"   EA/SD    11.5        3.3271615       A0              
630051    XZ     Per    4h  9m 27.6s   46o 34'  1"   EA/SD    11.4        1.15163412      G1              
630056    AB     Per    3h 37m 45.2s   40o 45' 49"   EA/SD    10.4        7.1602886       A5              
630061    AG     Per    4h  6m 55.8s   33o 26' 47"   EA/DM     6.69       2.02870904      B3Vn+B3         
630077    AX     Per    1h 36m 22.7s   54o 15'  2"   ZAND      9.4      681.6             M3IIIep+A0      
630078    AY     Per    3h 10m 25.1s   50o 55' 54"   EA/DS:    9.8       11.77664         A0              
630080    BB     Per    3h 55m 25.6s   31o 30' 48"   L:       12.8                                        
630083    BE     Per    3h 13m 48.9s   46o 10' 16"   E        14.5                                        
630092    BO     Per    3h  8m  3.5s   53o 38' 27"   EA/D:    12.0        4.580152        B9              
630093    BP     Per    3h 31m  6.7s   49o 24' 47"   EB       11.7        1.978914                        
630095    BR     Per    3h 57m  7.4s   32o  2' 59"   CEP:     13.1        4.001                           
630102    BY     Per    1h 54m 35.6s   54o 48'  0"   EA/SD    13.2        1.152635                        
630104    CC     Per    1h 59m 37.1s   55o 59' 22"   EB/SD    14.0        2.47015                         
630109    CH     Per    2h  4m 34.3s   53o 53' 13"   EA/SD    14.9        1.314649                        
630111    CK     Per    2h  5m  6.7s   56o 10' 25"   EA/SD    15.2        2.37275                         
630113    CM     Per    2h  5m 11.2s   57o 12' 25"   EA/D     12.5       38.6365          A3V             
630115    CO     Per    2h  7m 54.6s   57o 29' 21"   EA/SD    14.8        1.819184                        
630118    CR     Per    2h  9m 52.2s   57o 54' 33"   EA/DS:   12.4       22.681                           
630119    CS     Per    2h 11m 12.5s   58o 42' 48"   EA/DS    13.4       24.2560          G0IV            
630125    CY     Per    2h 15m  1.6s   54o 13'  8"   EA/SD    15.6        3.09835                         
630131    DH     Per    2h 22m  1.5s   53o  8' 34"   EA/SD    14.5        2.84060                         
630133    DK     Per    2h 23m 45.6s   57o 59' 24"   EB/SD    12.3        0.898876                        
630135    DM     Per    2h 25m 58.0s   56o  6' 10"   EA/SD     7.86       2.7277427       B5V             
630141    DS     Per    2h 31m 20.0s   57o 27' 38"   EA/SD    15.1        2.64135                         
630144    DV     Per    2h 32m 36.7s   53o  9' 31"   EB/SD    14.4        0.807137                        
630146    DX     Per    2h 34m 48.4s   56o 17' 52"   EA/SD:   15.2        2.91199                         
630148    DZ     Per    2h 35m 57.2s   56o  8' 46"   EB/KE    14.4        0.7641654                       
630157    EN     Per    2h 42m 50.5s   51o 53' 12"   EA/DS:   13.4       10.24665                         
630160    EQ     Per    2h 55m 58.6s   52o 10' 25"   EA/SD    14.0        1.48579                         
630167    EX     Per    2h 24m 12.4s   52o  9'  9"   EA/DM    12.0        8.47614         A1              
630170    FF     Per    3h 52m 36.6s   47o 28' 53"   EA/SD    15.3        3.465161                        
630172    FH     Per    3h 54m 39.4s   47o  6' 39"   EA/SD    14.6        4.36406                         
630180    FQ     Per    4h 10m 45.0s   45o 29' 43"   EA/SD    13.5        3.976942                        
630186    FW     Per    4h 27m 44.6s   52o 28' 52"   EA/SD:   14.3        0.7912215                       
630187    FX     Per    4h 34m 41.5s   44o 13' 53"   EA/SD    14.1        5.20579                         
630211    HK     Per    4h 36m 24.9s   41o 36' 14"   EA/SD    13.1        2.174614                        
630216    HP     Per    4h 43m 31.2s   39o 42' 46"   EA/DS    14.9       62.6197                          
630219    HS     Per    1h 52m 11.7s   57o  6' 43"   EA       13.0                        A0II-III        
630221    HU     Per    3h 42m 33.2s   39o  6'  4"   EA/DS    10.9       17.2544          A               
630222    HV     Per    3h 45m  4.9s   37o 47' 16"   EA/SD    12.8        2.95343                         
630223    HW     Per    3h 58m 46.1s   44o 44'  6"   EB/KE    13.0        0.634828                        
630225    HY     Per    4h 20m 56.3s   50o 52'  7"   EA       14.8        2.483426                        
630227    II     Per    4h 29m 37.6s   44o 25' 41"   EB/KW    13.5        0.479854                        
630228    IK     Per    4h 29m 27.5s   42o  3' 11"   EB/KE    11.3        0.6760369       A2              
630230    IM     Per    3h 11m 42.3s   52o 12' 42"   E/DM     12.0        2.25422                         
630234    IQ     Per    3h 59m 44.7s   48o  9'  5"   EA/DM     7.72       1.7435701       B8Vp:           
630237    IT     Per    2h 43m 19.9s   43o 43' 25"   EA/SD     9.9        1.533726        A1              
630238    IU     Per    2h 59m 36.4s   43o 55' 19"   EA/SD    10.5        0.8570251       A4              
630243    IZ     Per    1h 32m  5.5s   54o  1'  8"   EA/SD     7.8        3.687673        B8              
630245    KL     Per    2h 41m 16.5s   48o 56' 19"   EA/SD:   11.0        2.223080        A2              
630247    KN     Per    3h 22m 35.6s   41o 19' 55"   RRC      11.2        0.433224        A4-A6           
630250    KQ     Per    3h 53m  3.2s   52o 20' 51"   EA/SD:   12.8        5.37737                         
630251    KR     Per    4h 37m  8.9s   44o 12' 40"   EB/KE    10.4        0.99607883      (OB-)           
630256    KW     Per    2h  0m  0.0s   53o 13' 25"   EB/SD    10.5        0.93125884      A2              
630267    LS     Per    2h 57m  8.8s   37o 53' 41"   EA/SD    11.5        2.915693        A7IV            
630269    LU     Per    3h  0m 55.2s   50o 48' 39"   EA/SD:   14.9                                        
630272    LX     Per    3h 13m 22.4s   48o  6' 31"   EA/AR/    8.10       8.038207        G5IV+G5IV       
630281    MS     Per    4h  1m 12.2s   49o 33' 12"   EB       11.9        2.779526                        
630283    MU     Per    4h  2m 45.1s   52o 12' 17"   IS:      15.5                                        
630290    NO     Per    4h 15m 41.8s   48o 40' 43"   EA:      11.5                                        
630291    NP     Per    4h 14m 57.8s   31o 26' 44"   EA/DM    12.2        4.457161                        
630301    NZ     Per    4h 27m 59.5s   37o 50' 31"   EA/D     11.7        0.9379188       F2              
630311    OX     Per    4h 46m 18.0s   36o 57' 24"   EA/SD    14.7        3.05621                         
630312    OY     Per    1h 34m 53.8s   53o 39' 31"   EA/SD:   15.0                                        
630317    PS     Per    2h 39m 33.3s   45o 38'  6"   EA/SD:   13.0        0.7021775       F5p             
630327    QS     Per    3h  5m  1.4s   36o 24' 45"   EA/SD    15.5        2.338103                        
630328    QT     Per    3h  6m  9.8s   47o 17'  1"   EW/KE    14.2        0.852                           
630329    QU     Per    3h  5m 54.7s   40o 41' 13"   EA/SD    12.2        2.400936        A2Ve            
630330    QV     Per    3h  9m 31.7s   38o 21' 15"   EA/SD    14.8        1.2590555                       
630331    QW     Per    3h 12m 43.0s   38o 57' 58"   EA/SD    14.6        0.8256865                       
630332    QX     Per    3h 15m 11.5s   39o 34' 48"   EA/SD    15.6        4.849327                        
630337    V0337  Per    3h 31m 10.5s   34o 29' 21"   EA/SD    12.8        1.88608         A               
630339    V0339  Per    3h 50m  8.0s   33o 48' 37"   EA/SD    15.7        1.099031                        
630340    V0340  Per    3h 54m 12.9s   35o  2' 20"   EA/SD:   12.8        4.37102                         
630364    V0364  Per    2h 44m  0.8s   36o 17' 29"   EW/KW:   14.6        0.3394669                       
630365    V0365  Per    2h 43m 58.3s   40o 50' 58"   EA       14.2        3.024338                        
630366    V0366  Per    2h 44m 10.6s   36o 35' 12"   EA/SD    13.7        1.4219831                       
630379    V0379  Per    3h 57m 57.4s   31o 22' 37"   EA       13.5                                        
630427    V0427  Per    2h 59m 31.2s   39o 26' 44"   EA/SD:   11.6        2.810055                        
630432    V0432  Per    3h 10m 10.8s   42o 52'  9"   EW/KW    11.0        0.321517                        
630434    V0434  Per    3h 21m 36.0s   40o 19' 23"   EW/KE:   14.4        0.536098                        
630436    V0436  Per    1h 51m 59.3s   55o  8' 51"   EA/D      5.49      25.9359          B1.5V           
630449    V0449  Per    2h 57m 33.5s   35o 14'  1"   EA/KE    12.7        0.946204                        
630450    V0450  Per    2h 59m 15.3s   41o 45' 23"   EA       13.0        0.948666                        
630457    V0457  Per    3h 11m 14.1s   36o 59' 26"   EA/SD    14.4        1.1702843                       
630462    V0462  Per    3h 26m 31.3s   35o 45'  0"   EB/KE    13.7        1.155933                        
630476    V0476  Per    2h 39m 21.1s   43o 37'  0"   EW       14.6                                        
630482    V0482  Per    4h 15m 41.3s   47o 25' 20"   EA/DM:   10.6                                        
630505    V0505  Per    2h 21m 13.0s   54o 30' 36"   EA/DM     6.87                                       
630511    V0511  Per    3h 26m 25.5s   40o 27' 31"   EA/DM     8.1                                        
630514    V0514  Per    3h 19m 38.9s   50o  6' 53"   E        11.4                                        
630570    V0570  Per    3h  9m 34.9s   48o 37' 29"   EB:       8.15                                       
630572    V0572  Per    3h 15m 48.7s   50o 57' 21"   EA        6.50                                       
630578    V0578  Per    3h 34m  9.8s   46o 50' 57"   EB        8.94                                       
630579    V0579  Per    3h 39m 12.2s   41o 16' 58"   RRC:      7.87                                       
630592    V0592  Per    4h 44m 33.0s   39o 52' 32"   EB        8.30                                       
630600    V0600  Per    3h 19m  1.4s   32o 41' 16"   EB        7.62                                       
630615    V0615  Per    2h 19m  1.7s   57o  7' 19"   EA       12.98                                       
630618    V0618  Per    2h 19m 11.7s   57o  6' 40"   EA       14.60                                       
630680    V0680  Per    2h 41m 41.0s   35o 42' 55"   EW       13.55       0.3739783                       
630723    V0723  Per    1h 53m 59.7s   53o 28'  5"   EB       12.24       0.7961                          
630725    V0725  Per    2h 10m 27.0s   48o 46' 41"   EA        9.97       8.8695          A0              
630728    V0728  Per    2h 43m 52.2s   46o  3' 44"   EA       12.07       1.8771          A8              
630731    V0731  Per    3h 15m 48.2s   44o  3' 57"   EA       12.2        7.2778                          
630732    V0732  Per    3h 23m 19.2s   51o 23' 30"   EA       11.32       4.50655         B9              
630736    V0736  Per    3h 39m 41.4s   37o 47' 32"   EA        9.73       3.76674         A4IV            
630737    V0737  Per    3h 40m 20.2s   33o  4'  7"   EW       12.65       0.366556                        
630740    V0740  Per    4h  4m 49.3s   33o 57' 25"   EW       11.22       0.373042                        
630751    V0751  Per    1h 30m 53.1s   53o 25' 38"   EA       11.46       5.9613                          
630871    V0871  Per    2h 44m 15.9s   56o 40' 56"   EA       10.92       3.0240          B               
630873    V0873  Per    2h 47m  8.2s   41o 22' 32"   EW       10.8        0.2949039       K0V             
630877    V0877  Per    2h 57m 10.0s   53o 18'  2"   EA       13.91       1.1110                          
630881    V0881  Per    2h 59m 53.1s   38o  1' 48"   EW       10.71       0.387374        K0IV            
630884    V0884  Per    3h  6m 20.5s   48o 33' 12"   EA       10.73      12.807                           
630885    V0885  Per    3h  6m 21.7s   54o 47'  2"   EW       13.1        0.30386                         
630887    V0887  Per    3h  9m 18.8s   43o 44' 54"   EA        9.91       1.53444                         
630888    V0888  Per    3h  9m 37.6s   50o 53' 31"   EA       11.38       5.4957          A3              
630890    V0890  Per    3h 12m 54.7s   50o 29' 35"   EA       12.00      24.146                           
630899    V0899  Per    3h 38m 45.0s   40o 14' 13"   EA       12.88       8.5267                          
630901    V0901  Per    3h 41m 57.1s   39o  7' 30"   EA       10.55       3.2554          G5              
630912    V0912  Per    3h 44m 32.2s   39o 59' 35"   EA/RS    12.23       0.577545        K4V             
630947    V0947  Per    4h  3m 41.0s   32o 27'  6"   EW       13.45       0.29768                         
630951    V0951  Per    4h 10m 36.3s   34o  2' 58"   EW       12.70       0.27048                         
630958    V0958  Per    4h 31m 28.4s   32o 52' 13"   EA       11.77       4.9002          A7              
630959    V0959  Per    4h 35m  4.8s   37o 28' 21"   EA       10.11       0.990715        F0              
630960    V0960  Per    4h 37m 15.3s   33o 48' 49"   EA       11.66       4.5265                          
630963    V0963  Per    4h 45m 35.6s   52o 22' 35"   EB       13.2        0.4621                          
630964    V0964  Per    4h 49m 31.1s   51o 31' 11"   EW       12.50       0.4173                          
630980    V0980  Per    2h 34m 53.8s   57o 56' 26"   EB       15.17       0.514411                        
631047    V1047  Per    4h 28m 39.6s   48o 35' 55"   EA        9.75       1.9105          B5              
639002    bet    Per    3h  8m 10.1s   40o 57' 20"   EA/SD     2.12       2.8673043       B8V             
========================================================================================================