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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).

Aur

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            
========================================================================================================
 80003    T      Aur    5h 31m 59.1s   30o 26' 46"   NB+EA     4.1                        pec(Nova)       
 80017    RY     Aur    5h 18m 25.1s   38o 20' 19"   EA       11.7        2.725396        B9              
 80018    RZ     Aur    5h 49m 22.4s   31o 42'  9"   EA       11.9        3.010585        A               
 80024    SX     Aur    5h 11m 42.9s   42o  9' 55"   EB        8.38       1.2100855       B3V+B5V         
 80027    TT     Aur    5h  9m 42.3s   39o 35' 11"   EA        8.40       1.332735        B2Vn            
 80045    WW     Aur    6h 32m 27.2s   32o 27' 18"   EA        5.86       2.52501936      A4m+A5m         
 80049    XX     Aur    5h 47m  9.9s   41o  9' 52"   EB       13.1        5.412322                        
 80054    ZZ     Aur    5h 45m 42.1s   41o  8' 59"   EB       10.75       0.6012172       A7              
 80062    AH     Aur    6h 26m  4.9s   27o 59' 56"   EW       10.18       0.4941067       F7V             
 80064    AK     Aur    6h 39m 18.0s   31o 36' 44"   EA       10.55       4.76            A1              
 80066    AM     Aur    4h 56m 37.0s   32o 12' 11"   EA       10.08      13.61855         A8              
 80069    AP     Aur    7h 23m 50.3s   36o 26' 53"   EB       11.0        0.56937243      A2              
 80071    AR     Aur    5h 18m 18.9s   33o 46'  3"   EA        6.15       4.134651        B9p+B9(Hg-Mn)   
 80081    BC     Aur    5h 46m 16.6s   32o 50' 50"   EA       11.6        5.759759                        
 80083    BE     Aur    4h 59m 40.0s   29o 58' 27"   EA       13.5        2.104454                        
 80084    BF     Aur    5h  5m  3.5s   41o 17' 19"   EB        8.70       1.5832232       B5V+B5V         
 80108    CG     Aur    5h  3m 42.6s   29o 11' 32"   EA       11.73       1.8048556       A7              
 80109    CH     Aur    5h  5m 29.5s   31o 35' 46"   EA       14.8        5.010011                        
 80110    CI     Aur    5h  9m 22.9s   29o 27' 16"   EA       12.40       1.870031                        
 80112    CL     Aur    5h 12m 54.2s   33o 30' 28"   EA       11.7        1.24437505      A0              
 80116    CP     Aur    6h  0m 51.6s   39o 44' 39"   EA       13.2        2.7645                          
 80117    CQ     Aur    6h  3m 53.6s   31o 19' 41"   EA/RS     9.04      10.62251         G8IV+F5V        
 80136    DN     Aur    5h  8m  0.0s   33o 23' 52"   RRC      13.30       0.30846                         
 80137    DO     Aur    5h  9m 13.3s   36o 35' 39"   EA       14.1        0.788655                        
 80153    EI     Aur    5h  3m 14.8s   32o 45' 10"   EA       14.5        1.2266935                       
 80156    EM     Aur    5h 13m 24.4s   37o  5' 59"   EB       11.05       1.821972        A3              
 80158    EO     Aur    5h 18m 21.1s   36o 37' 55"   EA        7.56       4.0656497       B3V+B3V         
 80159    EP     Aur    6h 11m 32.1s   31o 28' 53"   EB       11.16       0.5910094       F8              
 80160    EQ     Aur    6h 50m 27.3s   35o 21' 46"   EA       12.72       3.429388                        
 80164    EU     Aur    4h 40m 35.8s   35o 25' 10"   EA       12.7        3.521025                        
 80171    FG     Aur    4h 55m 46.0s   37o 21'  6"   EA       11.65      13.6456          F7III           
 80177    FN     Aur    5h 39m 46.0s   32o 34'  5"   EA       11.9        8.34312                         
 80178    FO     Aur    5h 43m  4.0s   32o 12' 15"   EA       13.7        0.6100133                       
 80179    FP     Aur    5h 43m 38.8s   30o 53' 32"   EA       11.7        0.9472340       A5              
 80181    FR     Aur    5h 47m  0.8s   32o 25' 31"   EA       12.7        2.6067796                       
 80185    FV     Aur    5h 49m 42.0s   31o  7'  7"   EA       15.0        2.741598                        
 80186    FW     Aur    5h 52m 10.3s   30o 12' 44"   EA       12.3        2.559973                        
 80188    FY     Aur    5h 55m 12.2s   28o 43' 38"   EA       15.1       32.6379                          
 80189    FZ     Aur    6h  6m 43.6s   31o 55' 20"   EA       13.2        7.132                           
 80192    GI     Aur    6h 11m 36.4s   29o 26' 42"   EA:      11.45       1.2078591       F0              
 80193    GK     Aur    4h 51m  6.8s   46o 51' 10"   EA       13.5       19.857                           
 80194    GL     Aur    4h 52m 51.4s   46o 40' 48"   E        13.5                                        
 80205    GW     Aur    6h  0m 36.8s   32o 41' 17"   EA       12.6        2.49481                         
 80206    GX     Aur    6h 24m 56.4s   38o 39' 56"   EB       11.50       1.143288        A               
 80207    GY     Aur    4h 56m 48.6s   30o 35' 36"   EA       12.7        4.117398                        
 80212    HL     Aur    6h 19m 13.0s   49o 42'  7"   EB       10.80       0.6225051       F4              
 80216    HP     Aur    5h 10m 21.8s   35o 47' 47"   EA       11.16       1.4228191       G0              
 80219    HS     Aur    6h 51m 18.5s   47o 40' 24"   EA       10.16       9.815377        G8V+G8V         
 80221    HU     Aur    4h 39m  4.4s   34o 39' 24"   EA       11.1        1.4080071                       
 80223    HW     Aur    5h  1m 25.2s   39o 48' 12"   EB       12.6        1.1774218                       
 80227    II     Aur    5h  6m 41.7s   34o 40' 55"   EB:      14.7        0.9189079                       
 80228    IK     Aur    5h  8m 13.3s   33o 47' 53"   EA       16.6        4.0522                          
 80230    IM     Aur    5h 15m 29.7s   46o 24' 21"   EA        7.96       1.2472863       B6V             
 80238    IU     Aur    5h 27m 52.4s   34o 46' 58"   EB        8.19       1.81147435      B0p+B1Vp        
 80242    IY     Aur    5h 48m 27.2s   43o  4' 58"   EB        9.27       2.793380        B5:p            
 80243    IZ     Aur    5h 53m 36.5s   52o 25' 57"   EA       13.0        0.7711671                       
 80245    KL     Aur    6h  4m 37.2s   51o 54' 30"   EA       13.3        3.195                           
 80248    KO     Aur    6h  6m 15.2s   48o 22' 13"   EA        9.90       3.9537957                       
 80254    KU     Aur    6h 28m  4.4s   30o 23' 34"   EA       11.7        1.3195742       F5              
 80268    LT     Aur    6h 13m 14.0s   43o 14' 55"   EA       13.7        2.099027                        
 80269    LU     Aur    6h 13m 25.0s   42o  3' 41"   EA       14.3        1.157389                        
 80270    LV     Aur    6h 18m  8.4s   48o  1' 20"   EA       13.4        3.4742474                       
 80272    LX     Aur    6h 28m  2.3s   48o 45' 55"   EA       14.0        2.896902                        
 80273    LY     Aur    5h 29m 42.6s   35o 22' 30"   EB        6.66       4.002494        O9.5+O9.5III    
 80275    MM     Aur    5h 39m 19.9s   28o 59' 30"   EA       15.6        0.7746      :                   
 80276    MN     Aur    5h 40m 57.6s   46o  8' 16"   EA/RS:   10.80       5.580910                        
 80277    MO     Aur    5h 45m 20.6s   31o 54' 32"   EA       12.4        5.266706                        
 80278    MP     Aur    5h 46m 46.2s   31o 42' 41"   EA       14.8        2.060672                        
 80280    MR     Aur    5h 51m 33.7s   31o  6' 52"   EW       15.1        0.6903      :                   
 80282    MT     Aur    5h 57m 26.9s   30o 42'  6"   EA       14.8        1.1912658                       
 80283    MU     Aur    5h 57m 45.4s   29o 35'  8"   EA       13.2        2.202281                        
 80289    NN     Aur    5h 35m 13.8s   31o 48' 40"   EA       11.97       2.1760786                       
 80295    NT     Aur    5h  9m  5.3s   29o 40' 19"   EA       15.2        3.577832                        
 80313    OZ     Aur    5h  2m 52.0s   32o 29' 50"   EB       13.5        0.9537                          
 80322    PX     Aur    5h 43m 27.8s   42o 22' 43"   EA       15.5        1.492839                        
 80328    QT     Aur    6h 16m 27.6s   39o 53' 24"   EA       13.3        1.0895041                       
 80354    V0354  Aur    5h 36m 49.6s   41o 27' 58"   EA       15.0        2.45179                         
 80355    V0355  Aur    5h 39m 41.3s   42o  7' 14"   EA       11.14      17.6445                          
 80363    V0363  Aur    5h 33m 33.5s   36o 59' 33"   E+NL     14.23       0.32124179      pec(e)          
 80364    V0364  Aur    5h 30m 27.5s   46o 20' 15"   EA       12.2        0.6990248                       
 80365    V0365  Aur    5h 36m  7.0s   48o 56' 52"   EA       13.8        1.020948                        
 80371    V0371  Aur    5h 52m 20.2s   43o 36' 55"   EA       15.5        1.210833                        
 80379    V0379  Aur    6h 21m 30.2s   41o 51'  1"   EA       13.6        1.3510226                       
 80402    V0402  Aur    5h  2m 14.7s   31o 15' 49"   EW        8.84       0.6034956       F2              
 80404    V0404  Aur    5h 57m 13.5s   43o 28' 17"   EB       12.2        0.7543173                       
 80410    V0410  Aur    5h  1m 10.8s   34o 30' 27"   EW       10.10       0.3663612       G0              
 80417    V0417  Aur    5h 13m 31.8s   35o 39' 11"   EA        7.92       1.86553         A0              
 80424    V0424  Aur    5h 24m  0.8s   32o 37' 32"   EB        8.31       1.8370          B9              
 80425    V0425  Aur    5h 24m 30.5s   41o 49' 38"   EB        7.62       1.568583        B5              
 80426    V0426  Aur    5h 28m 12.3s   35o 25' 52"   EB       10.55       1.419094        B3V             
 80432    V0432  Aur    5h 37m 32.5s   37o  5' 12"   EA        7.98       3.08175         G0              
 80449    V0449  Aur    6h  8m 19.0s   45o 33' 16"   EB        7.46       0.70366366      A0              
 80455    V0455  Aur    6h 28m 54.9s   52o  7' 33"   EA        7.33       3.14578         F2              
 80459    V0459  Aur    6h 35m 37.6s   32o 34' 37"   EB        7.68       1.062637        B8              
 80462    V0462  Aur    6h 56m 36.6s   46o 32' 19"   EB:       8.13       1.75680         A0              
 80468    V0468  Aur    4h 56m 11.6s   44o 46' 39"   EB       12.4        0.91279                         
 80495    V0495  Aur    6h 47m 33.7s   47o 10' 15"   EA       12.72       1.046374                        
 80523    V0523  Aur    7h 24m  3.5s   41o 26'  2"   EW       13.4        0.3304376                       
 80534    V0534  Aur    6h 26m 23.9s   27o 56' 44"   EA       10.40       4.2836529                       
 80535    V0535  Aur    6h 32m 46.2s   46o 23' 33"   EW       12.70       0.3847486                       
 80542    V0542  Aur    5h 52m 33.0s   32o 32' 41"   EW       16.07       0.4224                          
 80543    V0543  Aur    5h 52m 39.1s   32o 36' 31"   EW       17.83       0.3579                          
 80544    V0544  Aur    5h 52m 53.2s   32o 33'  2"   EW       16.17       0.5585                          
 80551    V0551  Aur    6h  2m 38.1s   49o 53'  2"   EA+DSC   14.43       1.17320         F               
 80555    V0555  Aur    0h  0m  0.0s    0o  0'  0"                                                        
 80560    V0560  Aur    4h 56m 42.8s   39o 17' 24"   EA        9.07       1.528311        A0              
 80562    V0562  Aur    5h 18m 55.3s   29o 38' 21"   EW       12.87       0.52878                         
 80565    V0565  Aur    5h 37m 42.4s   39o 15' 30"   EA       11.84       4.2650                          
 80567    V0567  Aur    5h 43m 37.0s   33o 54' 14"   EW       12.55       0.71003                         
 80569    V0569  Aur    5h 46m 34.2s   44o 26' 52"   EB       13.0        1.1833                          
 80576    V0576  Aur    6h 10m 11.3s   30o  1' 44"   EA        9.68       1.9614          A0              
 80579    V0579  Aur    6h 25m 46.5s   46o 19' 58"   EA       13.97       2.0338                          
 80580    V0580  Aur    6h 32m 14.1s   31o  9' 55"   EA       13.78       4.3976                          
 80585    V0585  Aur    4h 47m 29.2s   31o 51' 43"   EB       11.05       0.535297        F5              
 80589    V0589  Aur    4h 52m 24.2s   43o 19' 55"   EA       12.2        1.1600                          
 80591    V0591  Aur    4h 54m  0.2s   39o 33' 44"   EB       10.81       1.10965         A0              
 80594    V0594  Aur    4h 57m 51.4s   39o 30'  2"   EA       12.45       1.4368                          
 80596    V0596  Aur    5h  2m  2.3s   42o 37' 55"   EW       11.83       0.397885                        
 80599    V0599  Aur    5h  8m 46.8s   32o  2'  9"   EW       12.0        0.316535                        
 80603    V0603  Aur    5h 10m 57.2s   52o 14' 57"   EW       12.8        0.3746                          
 80606    V0606  Aur    5h 23m 36.6s   29o 34' 28"   EA       10.77       1.8868          A5m             
 80607    V0607  Aur    5h 24m 24.6s   54o 39' 22"   EA/RS    10.5        2.0668                          
 80608    V0608  Aur    5h 27m 37.9s   39o 55' 33"   EA       12.5        0.7632387                       
 80609    V0609  Aur    5h 27m 48.6s   39o 54' 11"   EB       13.1        0.474728                        
 80610    V0610  Aur    5h 30m  1.9s   33o 24'  6"   EA       10.75       1.6192          B5              
 80612    V0612  Aur    5h 32m 40.0s   49o 34' 19"   EA       13.0        1.66134                         
 80617    V0617  Aur    5h 39m 56.6s   30o  5' 11"   EB        8.03      66.76            F5II+Be         
 80618    V0618  Aur    5h 43m 38.2s   31o 58' 54"   EA       12.95       0.99282                         
 80620    V0620  Aur    5h 45m 40.2s   41o  6' 24"   EA       12.03       1.503265                        
 80623    V0623  Aur    5h 48m 15.4s   39o  2' 10"   EB       12.5        0.60304                         
 80627    V0627  Aur    5h 49m  0.7s   39o 14' 34"   EW       13.7        0.38781                         
 80636    V0636  Aur    5h 52m 54.7s   35o 16' 10"   EW       13.35       0.3406176                       
 80639    V0639  Aur    5h 54m 43.4s   52o 43' 38"   EW       14.01       0.3571                          
 80640    V0640  Aur    6h  2m  7.6s   52o 31' 44"   EW       12.52       0.327997                        
 80641    V0641  Aur    6h  3m 47.6s   42o 19'  7"   EA       12.90       0.50488                         
 80644    V0644  Aur    6h 18m 25.7s   34o 29' 39"   EA       11.22       0.78045                         
 80645    V0645  Aur    6h 19m 15.4s   28o 26' 23"   EA        9.72      10.8925          A2              
 80646    V0646  Aur    6h 35m 40.5s   42o  4' 15"   EW       13.12       0.4386283                       
 89002    bet    Aur    5h 59m 31.7s   44o 56' 51"   EA        1.89       3.960036        A2IV+A2IV       
 89005    eps    Aur    5h  1m 58.1s   43o 49' 24"   EA        2.92    9884.              A8Iab:          
 89006    zet    Aur    5h  2m 28.7s   41o  4' 33"   EA        3.70     972.150912        K5Ib-II+B6.5IV-V
========================================================================================================