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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).

Oph

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            
========================================================================================================
590004    U      Oph   17h 16m 31.7s    1o 12' 38"   EA/DM     5.84       1.67734617      B5V+B5V         
590014    RV     Oph   17h 34m 35.0s    7o 14' 49"   EA/SD     9.42       3.6871222       A2V             
590018    RZ     Oph   18h 45m 46.4s    7o 13' 12"   EA/GS     9.65 :   261.9277          F3eIb+K5II      
590023    SW     Oph   16h 16m 28.1s   -6o 58' 44"   EA/SD    10.6        2.446021        A0              
590024    SX     Oph   16h 17m 55.5s   -6o 39' 52"   EA/SD:   11.8        2.0633038                       
590026    SZ     Oph   17h 15m  2.8s   -8o  3' 27"   EA/SD    10.7        3.708451        A               
590034    UU     Oph   16h 57m 22.6s  -25o 47' 59"   EA/SD    10.0        4.3968025       A0              
590048    WZ     Oph   17h  6m 39.0s    7o 46' 58"   EA/DM     9.14       4.183506        F8V+F8V         
590065    AL     Oph   17h 26m 45.3s   12o 57' 57"   EW       14.1                        G5              
590125    CY     Oph   16h 56m  5.9s  -28o 21' 49"   EA/DS:   10.8       24.5                             
590171    FG     Oph   17h  2m 20.1s  -25o 22' 29"   E:/SD:   12.3                                        
590185    FV     Oph   17h  3m 19.6s  -24o 28' 57"            12.3                                        
590260    LL     Oph   16h 55m 34.9s  -27o 54' 47"   E/SD:    13.6                                        
590378    V0378  Oph   17h 49m  4.8s    5o  0' 32"   EB/DS    13.8       70.8                             
590391    V0391  Oph   17h 58m  9.1s    4o 39' 28"   EA/SD    11.5        2.895550        A1+G5           
590415    V0415  Oph   18h  1m  4.0s    1o 11' 23"   EA:      14.6                                        
590423    V0423  Oph   18h  6m 16.5s    0o 33' 31"   EA/SD:   11.         1.203786                        
590441    V0441  Oph   17h 20m 52.7s  -17o 20'  5"   EA/SD    11.6        3.058545        A0              
590448    V0448  Oph   17h 15m 20.8s  -18o  6' 57"   EA/SD    12.2        6.086                           
590449    V0449  Oph   17h 30m 42.5s   10o 35'  3"   EA/SD    11.5        1.243075                        
590451    V0451  Oph   18h 29m 14.0s   10o 53' 31"   EA/DM     7.94       2.19659616      B9V+A2          
590456    V0456  Oph   18h 43m  5.8s    8o 50' 23"   EA/DM    10.2        1.0159996       A5:             
590487    V0487  Oph   18h  2m 33.7s    1o 47' 48"   EA/SD    12.8        3.135973                        
590496    V0496  Oph   18h 10m 14.6s    3o  8' 42"   E/SD     14.3        2.576225                        
590501    V0501  Oph   18h 18m 35.6s   14o 13' 43"   EA/SD:   10.9        0.9679504       A5              
590502    V0502  Oph   16h 41m 20.9s    0o 30' 27"   EW/KW     8.34       0.45339345      G2V+F9V         
590506    V0506  Oph   17h 41m  4.2s    7o 47'  4"   EB/DM    11.2        1.0604262       A-F             
590508    V0508  Oph   17h 58m 48.6s   13o 29' 46"   EW/KW    10.06       0.344792129     G5              
590509    V0509  Oph   18h  0m  3.2s    3o 27' 20"   EA/SD    12.6        1.2234565                       
590511    V0511  Oph   18h  8m 19.3s    2o 25' 31"   EA/SD    13.4        1.0657018                       
590527    V0527  Oph   17h 33m 59.5s  -29o 49' 47"   EA/KE    14.4        0.774704                        
590528    V0528  Oph   17h 37m 11.5s  -29o 50' 22"   EA/SD    12.6        2.705555                        
590534    V0534  Oph   17h 29m 49.7s  -28o 24' 15"   EA/SD    13.1        3.068414                        
590537    V0537  Oph   17h 33m 36.9s  -28o 20' 10"   EA       12.5        1.14718                         
590540    V0540  Oph   17h 37m 36.2s  -26o 29' 48"   EA/SD    13.3        1.446590                        
590546    V0546  Oph   17h 40m  3.1s  -28o 14' 45"   EA/SD    13.7        4.83046                         
590557    V0557  Oph   17h 45m  4.7s    6o 41' 38"   EB/KE    15.1        1.1978210                       
590566    V0566  Oph   17h 56m 52.4s    4o 59' 15"   EW/KW     7.46       0.40964569      F4V             
590572    V0572  Oph   18h  4m 18.3s    2o  6' 19"   EA/SD    15.4        2.43056                         
590573    V0573  Oph   18h  6m  5.4s    2o  5' 44"   EA/SD    13.1        4.35228                         
590577    V0577  Oph   18h 16m 45.9s    6o 54' 18"   EA/DM    11.36       6.079096        A               
590586    V0586  Oph   18h 27m 13.9s    4o 17' 15"   EA/SD    13.3        2.6941307                       
590618    V0618  Oph   18h 33m 41.8s    6o 55' 16"   EA/DS    14.6        9.962859                        
590636    V0636  Oph   18h 36m 41.5s   10o 28' 22"   EA/SD    13.5        2.233215                        
590642    V0642  Oph   18h 37m 22.7s    8o  6' 28"   EA/SD:   14.9        2.150417                        
590709    V0709  Oph   16h 28m  2.8s   -4o 13' 57"   E/SD     11.9        3.04545658                      
590735    V0735  Oph   17h  7m 49.0s    9o 33'  9"   EA/SD    10.5        3.2052032       A0              
590752    V0752  Oph   17h 21m 23.6s   10o 37' 47"   E/SD     13.0        1.836659                        
590760    V0760  Oph   17h 25m 14.2s    9o 39' 10"   E/SD     13.9        4.3431                          
590806    V0806  Oph   17h 40m 53.2s  -16o 57' 38"   EA/DS    11.6  :    15.4065          F8              
590839    V0839  Oph   18h  9m 21.3s    9o  9'  4"   EW/KW     8.8        0.40899532      F8V             
590842    V0842  Oph   17h 27m 42.2s  -29o  6' 43"   EA/SD    13.7        4.76953                         
590844    V0844  Oph   17h 32m 58.8s  -29o 44' 29"   EA/SD    14.8        7.20590                         
590845    V0845  Oph   17h 38m 35.7s  -28o 24' 14"   EA/SD:   14.34       3.82973                         
590846    V0846  Oph   17h 39m 40.9s  -28o 51' 12"   EA/SD:   10.0        3.126763        A2              
590849    V0849  Oph   18h 14m  7.3s   11o 36' 43"   NB        7.2                        pec(Nova)       
590913    V0913  Oph   17h 55m  3.6s   14o 10' 39"   EA/SD    11.5        1.9173304       A-F             
590916    V0916  Oph   18h 22m 49.5s    4o  7' 55"   EA/SD    11.4        3.114752                        
590920    V0920  Oph   18h 28m 20.2s    8o 30'  6"   EA/KE    15.1        1.5505                          
590947    V0947  Oph   18h  2m  5.3s    5o 52' 46"   EW:/KW   14.1        0.37186                         
590968    V0968  Oph   18h 19m 21.6s    3o 22' 11"   RRC      14.5        0.267954                        
590969    V0969  Oph   18h 20m 17.9s    3o 30' 32"   EW/KE    13.5        0.589412                        
590981    V0981  Oph   17h 48m 50.4s   11o 24' 28"   EA/SD    13.         1.4285133                       
590983    V0983  Oph   17h 55m 38.0s    2o 28' 41"   EA       10.5                        A0              
590987    V0987  Oph   18h 14m 36.9s    2o 23'  1"   EA/SD    14.4        2.202732                        
591001    V1001  Oph   16h 32m 33.8s  -15o 25' 14"   EA/SD    14.5        1.789398                        
591010    V1010  Oph   16h 49m 27.7s  -15o 40'  5"   EB/KE     6.1        0.66142613      A5V             
591015    V1015  Oph   16h  9m  1.7s   -6o 52'  8"   EA/SD    14.3        3.877930                        
591016    V1016  Oph   16h 16m 38.4s   -5o 21' 18"   EW:/KE   13.1        0.51        :                   
591018    V1018  Oph   16h 17m 59.3s   -5o 56' 55"   RRC:     15.6        0.3696396   :                   
591022    V1022  Oph   16h 21m 21.3s   -4o  3' 10"   EW/KW    15.1        0.2394                          
591058    V1058  Oph   17h  1m 25.0s    7o 22' 50"   EA/SD:   15.5                                        
591065    V1065  Oph   17h 38m 53.1s   10o 23' 32"   EA       12.5                                        
591076    V1076  Oph   17h 51m  2.1s    6o 27' 40"   EA/SD    15.7        1.874345                        
591080    V1080  Oph   17h 56m 48.4s    6o 26' 13"   EA/SD:   16.                                         
591102    V1102  Oph   18h 17m 41.7s    5o 31' 11"   EA       16.                                         
591120    V1120  Oph   16h  9m 59.6s   -6o 34' 13"   EW/KW    13.9        0.33675319                      
591125    V1125  Oph   16h 55m  6.0s   11o 33'  2"   E        11.                                         
591677    V1677  Oph   17h 14m 37.8s  -18o 26' 41"   EW/KW    15.3        0.35508                         
591811    V1811  Oph   17h 18m  4.8s  -17o  4' 10"   EW/KW    17.2        0.41443                         
591879    V1879  Oph   17h 20m  2.9s  -20o 58' 13"   L        14.1                                        
592036    V2036  Oph   18h  8m 39.4s    6o 15' 38"   EA/SD    14.1        6.78780                         
592037    V2037  Oph   18h 11m 53.3s    2o 20' 21"   EA       15.                                         
592051    V2051  Oph   17h  8m 19.1s  -25o 48' 30"   UG+EA    13.0                        pec(UG)         
592056    V2056  Oph   17h 41m 34.8s    0o 35' 41"   EA/D     13.5        2.127424                        
592201    V2201  Oph   17h 44m  4.4s    3o 44' 17"   EW/KW    14.5                                        
592203    V2203  Oph   17h 49m 43.3s    4o 28' 24"   EW/KW    11.6                                        
592216    V2216  Oph   17h 31m 44.1s  -16o 57' 42"   XI       16.4                                        
592288    V2288  Oph   17h 41m 53.6s    5o 16' 31"   EA       12.6                                        
592301    V2301  Oph   18h  0m 35.6s    8o 10' 12"   E+AM     16.0                                        
592332    V2332  Oph   18h  1m 48.9s    8o 35' 45"   EB       13.8                                        
592357    V2357  Oph   16h 57m 16.8s   10o 59' 51"   EW:      10.66                                       
592368    V2368  Oph   17h 16m 14.3s    2o 11' 10"   EA        6.22                                       
592373    V2373  Oph   17h 32m  2.9s    2o 49' 25"   EB        7.39                                       
592377    V2377  Oph   17h 33m 56.0s    8o  9' 58"   EB        8.60                                       
592383    V2383  Oph   17h 40m 43.8s   -7o 46' 13"   BY:      10.38                                       
592388    V2388  Oph   17h 54m 14.2s   11o  7' 50"   EB        6.27                                       
592394    V2394  Oph   16h 31m 40.7s  -24o 25' 16"   EW       11.25                                       
592425    V2425  Oph   17h 19m 18.5s    0o 10' 18"   EA       10.6                                        
592536    V2536  Oph   18h  9m 57.3s    8o 50' 26"   EA       11.55                                       
592540    V2540  Oph   17h 37m 34.6s  -16o 23' 23"   NB        8.5                                        
592549    V2549  Oph   17h  9m 22.1s   12o 39' 58"   EA       11.8                                        
592553    V2553  Oph   17h 24m 41.6s   13o 53' 58"   EW       11.3                                        
592563    V2563  Oph   18h  4m 21.5s    0o 36' 24"   E        11.6                                        
592604    V2604  Oph   17h 28m 19.9s  -16o 30'  2"   EA       12.7        1.70477                         
592610    V2610  Oph   17h 53m 32.3s   -3o 54' 55"   EW        9.20       0.42651         K0              
592612    V2612  Oph   18h 29m 13.0s    6o 47' 14"   EW        9.36       0.375296        G0              
592617    V2617  Oph   16h 27m  7.2s   -8o 51'  0"   EB       12.8        0.424074                        
592619    V2619  Oph   16h 43m 27.4s  -12o 10' 47"   EW       13.75       0.479238                        
592626    V2626  Oph   17h  5m 32.0s   10o 32' 47"   EA        8.26      10.8743          A5              
592629    V2629  Oph   17h  7m 23.7s   10o 52' 41"   EA:      15.5        1.4528476                       
592632    V2632  Oph   17h 11m 52.0s  -23o 54' 35"   EA       12.08       2.69691                         
592635    V2635  Oph   17h 16m 29.8s    0o 29' 16"   EW       12.15       0.43096                         
592636    V2636  Oph   17h 18m 10.0s  -17o 15' 47"   EA       12.75       3.3337                          
592637    V2637  Oph   17h 18m 29.6s    5o 16' 31"   EW       11.80       0.386182                        
592638    V2638  Oph   17h 18m 44.6s  -18o 56' 15"   EA       13.2        1.87423                         
592640    V2640  Oph   17h 28m  1.5s    5o  7' 15"   EW       12.50       0.419892                        
592642    V2642  Oph   17h 35m 57.1s   11o 50' 41"   EA       11.40       3.46464                         
592644    V2644  Oph   17h 36m 44.9s  -29o 14' 27"   EA       12.8        1.27748                         
592647    V2647  Oph   17h 42m 20.3s   10o 20'  4"   EA       12.30       3.3515                          
592650    V2650  Oph   17h 45m 20.7s    8o 10' 39"   EB       12.57       0.384055                        
592653    V2653  Oph   17h 52m 47.3s    3o 47' 39"   EA        9.51       4.39435         G5              
592657    V2657  Oph   17h 57m 42.7s    2o 31' 20"   EA       13.7        1.7105330                       
592659    V2659  Oph   17h 58m 13.7s    3o  0' 14"   EA       12.83       0.7767554                       
592660    V2660  Oph   18h  1m 24.1s    0o  0'  8"   EA       14.15       1.2061988                       
592663    V2663  Oph   18h  2m 47.7s    7o 54'  1"   EA       15.0        1.4057497                       
592698    V2698  Oph   16h 47m 17.3s    2o 38' 48"   EA       12.9        1.47028                         
592724    V2724  Oph   17h 21m 56.9s    9o 56' 54"   EB       11.75       0.444632                        
========================================================================================================