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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).

Dra

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            
========================================================================================================
340009    Z      Dra   11h 45m 29.2s   72o 14' 58"   EA/SD    10.8        1.3574560       F4V             
340010    RR     Dra   18h 41m 47.4s   62o 40' 35"   EA/SD    10.0        2.8313215       A2              
340016    RX     Dra   19h  2m 42.0s   58o 43' 58"   EA/DM    10.0        3.7863886       F               
340018    RZ     Dra   18h 23m  5.4s   58o 54' 13"   EB/SD:   10.11       0.5508738       A5              
340024    SX     Dra   18h  4m 33.9s   58o 23' 54"   EA/SD     9.8        5.16952         A7V             
340030    TW     Dra   15h 33m 51.1s   63o 54' 26"   EA/SD     8.0        2.8068470       A8V+K0III       
340033    TZ     Dra   18h 22m 11.7s   47o 34'  8"   EA/SD     9.6        0.8660347       A7V:            
340039    UZ     Dra   19h 25m 55.0s   68o 56'  7"   EA/DM     9.9        3.2613024       F8              
340045    WW     Dra   16h 39m  4.0s   60o 41' 59"   EA/AR/    8.3        4.6296238       G2IV+K0IV       
340046    WX     Dra   18h 52m 10.4s   47o 48' 17"   EA/SD    13.5        1.8018647                       
340050    XY     Dra   18h 18m 17.1s   55o  3' 33"   EA/SD    13.4        2.31422                         
340052    YY     Dra   11h 43m 35.0s   71o 42'  9"   EA/SD    12.9        4.21123                         
340063    AI     Dra   16h 56m 18.1s   52o 41' 54"   EA/SD     7.05       1.1988146       A0V             
340064    AK     Dra   18h 16m 43.2s   53o 14' 48"   EA       11.8        2.218237        F3              
340071    AR     Dra   12h 16m 36.5s   64o 51' 27"   EA/SD:   11.29       0.6758375       F5V             
340074    AU     Dra   17h 35m 21.3s   68o 38' 19"   EA/SD:   12.3        0.51514                         
340077    AX     Dra   12h 40m 14.7s   66o 17' 10"   EB       10.9        0.5681644       F5              
340083    BE     Dra   18h 25m 56.9s   68o 57' 44"   EB/KE    11.3        0.5224911       B               
340084    BF     Dra   18h 50m 59.4s   69o 52' 58"   EA       10.1        5.60545         F8              
340086    BH     Dra   19h  3m 39.5s   57o 27' 26"   EA/SD:    8.38       1.81723857      A2V+Ap          
340089    BL     Dra   19h 40m 24.6s   60o 55' 13"   E        11.9                                        
340090    BM     Dra   19h 45m 41.7s   58o 32' 19"   EA/SD    14.6        3.5293                          
340091    BN     Dra   19h 47m  8.0s   61o 22' 12"   EA/SD    14.3        5.93015     :                   
340093    BP     Dra   19h 57m 43.2s   60o  0' 53"   EB/KE    14.4        0.9868                          
340096    BS     Dra   19h 56m 28.8s   73o 36' 58"   EA/DM     9.12       3.3640120       F5V+F5V         
340097    BT     Dra   14h 51m 44.6s   60o  4'  9"   RRAB     11.36       0.5886740       A8              
340098    BU     Dra   14h 58m 40.1s   56o 45'  7"   EA/SD:   10.4        1.91417         F5              
340099    BV     Dra   15h 11m 50.4s   61o 51' 25"   EW/KW     7.88       0.3500671       F7V             
340100    BW     Dra   15h 11m 50.1s   61o 51' 41"   EW/KW     8.61       0.2921671                       
340101    BX     Dra   16h  6m 17.4s   62o 45' 46"   RR       11.5        0.561192        A3              
340111    CK     Dra   15h 37m 43.8s   57o  6' 49"   EA/SD    11.3        4.994511                        
340113    CM     Dra   16h 34m 20.2s   57o  9' 44"   EA+UV+   12.87       1.26838965      M4Ve            
340122    CV     Dra   17h 31m 57.2s   57o 10' 42"   IS        9.5                                        
340127    DD     Dra   18h 44m  4.6s   60o 46' 13"   EA:      11.2        0.784       :   B9              
340129    DF     Dra   20h 38m 46.4s   69o 36'  9"   E        13.2                                        
340130    DG     Dra   19h  5m  3.4s   57o  7' 32"   ELL       9.40       0.5713698       A5V             
340145    DW     Dra   19h 21m 39.1s   69o 56'  3"   EA/SD    14.                                         
340150    EF     Dra   18h  5m 30.4s   69o 45' 16"   EW/KW    10.48                                       
340167    EX     Dra   18h  4m 14.1s   67o 54' 12"   UG+E     13.5                                        
340174    FK     Dra   12h 30m 11.7s   63o 53' 21"   EA        9.30                                       
340184    FU     Dra   15h 34m 45.2s   62o 16' 44"   EW       10.58                                       
340187    FX     Dra   15h 43m 47.6s   58o  1' 27"   EB        9.29                                       
340193    GK     Dra   16h 45m 41.2s   68o 15' 31"   EA        8.78                                       
340195    GM     Dra   17h 20m 21.9s   57o 58' 27"   EW        8.79                                       
340199    GQ     Dra   17h 25m 29.4s   51o 29' 35"   EB        8.98                                       
340204    GV     Dra   17h 53m 27.5s   52o 23'  8"   EA        8.59                                       
340208    GZ     Dra   18h 12m 41.0s   54o 46'  7"   E:        9.52                                       
340210    HI     Dra   18h 33m 24.4s   58o 42' 23"   RRC       9.02                                       
340212    HL     Dra   18h 34m 26.3s   57o 48'  7"   EB        7.35                                       
340216    HP     Dra   18h 54m 53.5s   51o 18' 30"   EA        8.06                                       
340226    HZ     Dra   19h 46m  2.5s   69o 55'  9"   EA        8.16                                       
340239    IV     Dra   15h 36m 23.3s   53o 19' 11"   EW       13.54                                       
340244    KK     Dra   19h  7m 56.6s   59o 23' 52"   EA       11.8                                        
340249    KP     Dra   20h  5m 23.5s   63o 24' 57"   E        12.0                                        
340259    KZ     Dra   20h 11m 19.9s   68o 33' 31"   EA       11.2                                        
340262    LN     Dra   17h 45m 55.4s   52o 38'  5"   EB       12.0                                        
340265    LQ     Dra   18h 19m 41.8s   50o 10' 38"   EA       11.6                                        
340269    LU     Dra   18h 59m  1.9s   52o 28'  5"   EA/RS    12.2                                        
340274    LZ     Dra   19h 34m 33.8s   74o  3'  6"   EW/KW    12.4                                        
340275    MM     Dra   19h 59m 44.4s   65o 10'  6"   EW       14.45                                       
340277    MO     Dra   20h 23m 57.6s   63o  2' 33"   EA       12.93                                       
340283    MU     Dra   18h 58m 35.3s   50o  9' 30"   EW       11.51       0.349668                        
340285    MW     Dra    9h 50m 17.1s   74o 58' 16"   EA        9.14       3.28935         G               
340286    MX     Dra   12h 12m 15.1s   68o 53'  0"   RS       10.36       6.395           G7              
340287    MY     Dra   12h 27m 43.1s   67o 58'  5"   EA       11.58       1.71325         A2              
340288    MZ     Dra   12h 28m 24.7s   74o 14'  7"   EA       11.86       0.84034         F2              
340289    NN     Dra   13h  4m  3.0s   65o 15' 24"   EW       12.34       0.382872                        
340290    NO     Dra   15h 11m 44.4s   63o 37' 19"   EA        8.02       5.47798         A2V             
340291    NP     Dra   17h 35m 16.3s   55o  0' 12"   EA        9.04       3.10886         A0              
340294    NS     Dra    9h 42m 54.7s   78o 56' 55"   EA       11.27      50.517                           
340295    NT     Dra    9h 43m 42.9s   77o 26' 50"   EA       12.98       1.63993                         
340296    NU     Dra   10h 15m 36.6s   76o 41' 54"   EA       11.00       6.1513                          
340297    NV     Dra   10h 41m  1.5s   74o 40' 58"   EA       12.85       1.05715                         
340298    NW     Dra   11h 32m  5.9s   69o 57' 42"   EA       12.91       0.728091                        
340302    OO     Dra   11h 40m  1.4s   75o  9' 22"   EA+DSC   11.4        1.2383832       A3V-IV          
340304    OQ     Dra   11h 49m 25.9s   72o 34'  1"   EW       13.65       0.33967                         
340311    OX     Dra   13h  7m 27.5s   69o 10' 19"   EA       12.28       2.34906                         
340315    PQ     Dra   14h 30m 33.9s   55o 33' 14"   EB       13.9        0.320947                        
340316    PR     Dra   14h 35m 10.6s   59o 30' 35"   EW       13.3        0.37476                         
340320    PV     Dra   15h  6m 27.7s   60o 18' 21"   EA       13.3        1.27745                         
340322    PX     Dra   15h  7m 50.2s   63o  7'  2"   EA        6.82       2.44405         F4III           
340329    QU     Dra   15h 25m 23.4s   56o 45' 49"   EW       14.1        0.276917                        
340338    V0338  Dra   15h 49m 11.1s   60o 38'  3"   EW       13.3        0.23515                         
340339    V0339  Dra   15h 49m 57.1s   55o 21' 42"   EW       13.4        0.4574                          
340341    V0341  Dra   15h 52m 57.7s   68o 43' 30"   EA       10.10       1.65042         F8              
340342    V0342  Dra   15h 53m  2.4s   55o  4' 32"   EW       12.65       0.39221                         
340344    V0344  Dra   15h 57m  9.1s   58o 10'  1"   EW       13.7        0.3329                          
340347    V0347  Dra   16h  8m 32.6s   63o 18' 39"   EA/RS    12.4        0.507280                        
340349    V0349  Dra   16h 13m 22.0s   51o 55' 23"   EW       11.3        0.38987                         
340357    V0357  Dra   16h 55m 57.1s   68o 12'  0"   EW       11.55       0.619276                        
340362    V0362  Dra   17h 11m 12.1s   68o 33' 24"   EW       12.11       0.3472223                       
340372    V0372  Dra   17h 25m 40.8s   59o 15' 31"   EB/RS    10.39       0.533529        F3IV            
340373    V0373  Dra   17h 26m 23.0s   53o 50' 33"   EW       12.9        0.316904                        
340374    V0374  Dra   17h 27m 20.3s   56o 22' 30"   EW        9.93       0.40346         F8              
340380    V0380  Dra   17h 45m 24.5s   69o 18' 23"   EA       12.28       0.4937                          
340388    V0388  Dra   17h 56m  9.6s   71o 26' 40"   EB       11.77       0.457033                        
340391    V0391  Dra   17h 59m 10.4s   58o 43'  0"   EA/RS    10.90       1.2314                          
340400    V0400  Dra   18h 16m 57.8s   69o 26' 46"   EW       12.40       0.41938                         
340402    V0402  Dra   18h 21m 13.9s   65o 15' 10"   EW       10.93       1.38061                         
340413    V0413  Dra   18h 47m 29.6s   49o 25' 55"   EA        7.19       4.243           F5              
340415    V0415  Dra   18h 55m 50.5s   51o  0'  8"   EW       12.53       0.437414                        
340421    V0421  Dra   19h 19m 31.5s   81o 55' 35"   EW       12.16       0.653555                        
340422    V0422  Dra   19h 21m 36.5s   56o 50' 35"   EB       11.87       0.51245                         
340423    V0423  Dra   19h 23m  4.0s   56o  8'  5"   EA       10.93       1.21742                         
340425    V0425  Dra   19h 44m 18.4s   81o 47' 32"   EA       10.72       9.33543         F8              
340432    V0432  Dra   20h  1m 28.4s   61o 10' 18"   EA       12.24      11.628188                        
340441    V0441  Dra   20h 12m 39.6s   82o 38' 21"   EA       12.45       2.90540                         
340510    V0510  Dra   17h 16m 26.2s   69o 35'  4"   EW       13.29       0.3229625                       
340539    V0539  Dra   19h 30m  0.0s   70o 12' 37"   EW       13.36       0.333096                        
========================================================================================================