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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).

Tau

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            
========================================================================================================
780015    RW     Tau    4h  3m 54.3s   28o  7' 34"   EA/SD     7.98       2.7688356       B8Ve+K0IV       
780018    RZ     Tau    4h 36m 37.7s   18o 45' 18"   EW/KW    10.08       0.4156747       A7V+A7V         
780022    SV     Tau    5h 52m  8.2s   28o  6' 40"   EA/SD     9.68       2.1669051       B9+A0           
780032    TY     Tau    4h 34m 43.3s   15o 15' 54"   EA       11.5        1.0773555       K0V             
780047    WY     Tau    5h 56m 26.1s   26o 18' 40"   EW/KE    11.14       0.6927584       B9              
780057    AC     Tau    4h 37m  6.4s    1o 41' 31"   EA/SD    10.3        2.043356        F0              
780062    AH     Tau    3h 47m 12.0s   25o  7'  0"   EW/KW    11.25       0.3326754       G1p             
780065    AL     Tau    5h 33m 54.9s   26o  1'  2"   EA       12.9        0.930658        F0-F8           
780066    AM     Tau    5h 52m 21.4s   16o 17'  1"   EA/SD:   10.4        2.043926        B8              
780067    AN     Tau    3h 56m 11.4s   29o 31' 23"   EB/DM    10.3        1.61464         A3              
780069    AP     Tau    4h 54m 44.7s   26o 55' 27"   EA       14.0        0.9719728                       
780070    AQ     Tau    4h 55m 58.0s   27o 53' 28"   EA/SD:   12.0        1.215904        A-F             
780072    AS     Tau    5h 14m 28.5s   27o 43' 25"   EA/SD    12.4        3.483328                        
780091    BN     Tau    4h 15m 44.9s   30o 40'  8"   EA/SD    12.7        4.25426                         
780099    BV     Tau    5h 38m 34.7s   22o 54' 45"   EB/KE:   11.7        0.93044         B9:             
780104    CC     Tau    4h 42m 54.0s    1o 59' 14"   E        13.5                                        
780105    CD     Tau    5h 17m 31.1s   20o  7' 55"   EA/D      6.77       3.435137        F7V+F5IV        
780107    CF     Tau    4h  5m 10.1s   22o 29' 48"   EA/D     10.03       2.75589         G0              
780118    CR     Tau    5h 51m 28.9s   24o  3' 31"   EA       12.5        0.681346                        
780120    CT     Tau    5h 58m 50.1s   27o  4' 42"   EW/KE    10.34       0.6668303       B2n             
780121    CU     Tau    3h 47m 36.9s   25o 23' 16"   EW/KW    11.5        0.41222         G0              
780142    DT     Tau    5h 28m 47.2s   16o  8' 32"   EA/SD    15.0        1.88225                         
780157    EN     Tau    5h 56m 43.5s   25o 14' 18"   EA/SD:   11.4        1.239029        G0-G2           
780158    EO     Tau    6h  0m 17.3s   23o 54' 39"   EA       13.6        3.9874                          
780160    EQ     Tau    3h 48m 13.4s   22o 18' 51"   EW/KW    10.5        0.34134848      G2              
780163    ET     Tau    5h 37m 40.9s   27o 16' 17"   EA/SD     9.1        5.996879        B8              
780166    EW     Tau    5h 51m 35.2s   16o  1' 57"   EA/D     11.7        5.26934         A-F             
780199    GQ     Tau    5h 41m 34.9s   25o 59' 53"   EA/SD:   11.2        1.5317673       B9              
780200    GR     Tau    4h  1m  3.2s   20o 24' 50"   EB/SD:   10.26       0.4298525       A4-5V+K5V       
780205    GW     Tau    4h 30m  9.5s   25o 32' 27"   EB/KE    11.2        0.6413291       A3              
780213    HM     Tau    4h 32m 46.1s   30o 31'  0"   EA/D     15.2        2.589595                        
780221    HU     Tau    4h 38m 15.8s   20o 41'  5"   EA/SD:    5.85       2.0562997       B8V             
780225    HY     Tau    5h 43m 22.4s   19o 24'  5"   EA       12.4        3.01682                         
780229    IL     Tau    4h  7m 13.9s   29o 18' 32"   EA/SD    12.4        5.36062                         
780239    IV     Tau    4h 39m 32.6s   28o 24' 33"   EA/SD    14.4        0.979811                        
780407    V0407  Tau    4h 10m 58.4s   26o 18' 22"   EA/SD    13.5        2.051133                        
780424    V0424  Tau    5h 54m 52.1s   26o 48' 23"   EA       15.0        2.33368                         
780471    V0471  Tau    3h 50m 25.0s   17o 14' 47"   EA/D/R    9.40       0.52118301      K0Vea+DA        
780618    V0618  Tau    3h 43m  5.0s   25o 44' 35"   UV       15.9                                        
780723    V0723  Tau    5h  6m 46.2s   28o 35' 23"   EA/SD    14.5        2.825489                        
780781    V0781  Tau    5h 50m 13.1s   26o 57' 43"   EW/KW     8.9        0.3449100       G0              
780818    V0818  Tau    4h 17m 38.9s   16o 56' 52"   E/RS      8.30                                       
781022    V1022  Tau    4h  7m 27.4s   27o 51'  6"   EW/KW    14.45                                       
781061    V1061  Tau    4h 58m 52.8s   24o 29' 45"   EB/KE     7.95                                       
781094    V1094  Tau    4h 12m  3.6s   21o 56' 51"   EA        8.95                                       
781112    V1112  Tau    4h 34m 24.8s    8o 22'  2"   EW       13.1                                        
781121    V1121  Tau    3h 24m 15.5s    1o 21' 24"   EB:       8.46                                       
781123    V1123  Tau    3h 34m 58.5s   17o 42' 38"   EW        9.87                                       
781128    V1128  Tau    3h 49m 27.8s   12o 54' 44"   EW        9.65                                       
781130    V1130  Tau    3h 50m 41.9s    1o 33' 50"   EB        6.65                                       
781154    V1154  Tau    5h  5m 37.7s   23o  3' 40"   E:        6.71                                       
781188    V1188  Tau    3h 45m 36.0s   24o 30'  1"   EW       11.85                                       
781220    V1220  Tau    3h 28m  9.6s   -1o 18'  5"   EB       11.9        1.06425                         
781222    V1222  Tau    3h 28m 25.8s    9o  4' 24"   EW       13.28       0.29172                         
781223    V1223  Tau    3h 29m 14.7s    9o 11' 20"   EW       12.13       0.44713                         
781229    V1229  Tau    3h 47m 29.4s   24o 17' 18"   EA        6.84       2.461134        A0V             
781230    V1230  Tau    3h 53m  6.0s   10o 26' 45"   EW       14.28       0.35240                         
781234    V1234  Tau    4h 29m 25.0s    9o  5' 30"   EW       12.6        0.38786                         
781236    V1236  Tau    5h 16m 28.8s   26o  7' 39"   EA       18.1        1.29395         K+L             
781237    V1237  Tau    5h 26m 21.1s   24o 49' 51"   EW       14.03       0.287449        G               
781239    V1239  Tau    5h 50m 25.9s   26o 56' 51"   EA:      10.66       1.084820                        
781241    V1241  Tau    3h 24m 23.3s    0o 42' 15"   EA/SD     9.38       0.82327038      A7+F6V:         
781242    V1242  Tau    3h 41m 26.7s   30o  4'  9"   EA       13.92       1.84755                         
781249    V1249  Tau    4h 36m 48.2s    6o 57'  6"   EA       13.32       1.188245                        
781250    V1250  Tau    4h 38m 25.8s   23o 53' 43"   EA       12.55       2.044093                        
781260    V1260  Tau    5h 39m  3.9s   25o 36' 10"   EA       10.15       5.43077         A3m             
781268    V1268  Tau    3h 40m 38.8s   28o 46' 24"   EA        7.42       8.161235        A1V             
781284    V1284  Tau    3h 51m 26.2s   17o 15' 35"   EW       14.55       0.350461                        
781287    V1287  Tau    3h 53m  7.4s   25o 32'  7"   EA        8.53      13.0620          A0              
781295    V1295  Tau    4h  2m 59.3s   27o 18' 55"   EA       11.27       2.09160         G5              
781332    V1332  Tau    4h 43m 41.3s   22o 53' 38"   EW:      11.58       0.2718255                       
781352    V1352  Tau    4h 56m 31.3s   24o 26' 48"   EA       12.60       6.9098                          
781355    V1355  Tau    5h  2m  6.8s   24o 27' 40"   EW       13.6        0.24467     :                   
781356    V1356  Tau    5h  4m 44.2s   22o 17'  8"   EA       10.86      12.8075          F8              
781367    V1367  Tau    5h 30m 19.1s   23o 51' 27"   EW       10.81       0.347678                        
781369    V1369  Tau    5h 32m 24.0s   21o 41' 11"   EA       12.35       1.35567                         
781370    V1370  Tau    5h 32m 48.8s   19o  2'  4"   EW       10.9        0.295523                        
781374    V1374  Tau    5h 48m  3.9s   28o 30' 47"   EB/RS    13.6        0.2508621       M3Ve            
781409    V1409  Tau    5h 32m 22.3s   25o 21'  8"   EW       10.15       0.307363        G7              
789011    lam    Tau    4h  0m 40.8s   12o 29' 25"   EA/DM     3.37       3.9529478       B3V+A4IV        
========================================================================================================