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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).

Hya

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            
========================================================================================================
420016    RX     Hya    9h  5m 41.2s   -8o 15' 40"   EA/SD     8.9        2.2816450       A8              
420024    SX     Hya   13h 44m 37.4s  -26o 46' 48"   EA/SD     8.6        2.895737        A3+K5:          
420025    SY     Hya    8h 29m 51.7s   -9o 23' 58"   EA/SD    10.7        3.40292         A               
420027    TT     Hya   11h 13m 12.5s  -26o 27' 54"   EA/SD     7.25       6.95342913      A5IIIe+G5IV     
420032    TY     Hya    9h 29m  2.4s    5o 34' 28"   EA/SD    10.5        4.661078        A0              
420036    UW     Hya    8h 42m  3.7s    2o 37' 53"   EA       13.3        3.166316                        
420038    UY     Hya    9h  0m 28.5s    2o 34' 51"   EW:      13.3        0.727500                        
420041    VW     Hya    8h 33m 51.0s  -14o 39' 54"   EA/SD    10.5        2.696423        A0              
420043    VY     Hya   10h 20m 16.0s  -23o  9'  5"   EA/SD     9.0        2.00119519      A3              
420044    VZ     Hya    8h 31m 41.4s   -6o 19'  8"   EA/DM     8.96       2.9042998       F5V+F5V         
420047    WY     Hya    8h 14m 10.9s    0o 29' 44"   EW/KE    10.4        0.7160065       A6+A6           
420051    XZ     Hya    9h 25m 23.7s  -22o 10' 16"   EB       14.7        0.6262829                       
420059    AE     Hya    9h 45m  4.9s  -23o  2' 38"   EW/KW    13.9        0.3928865                       
420060    AF     Hya    9h 48m  3.3s  -23o 12'  9"   EW       12.8        0.5761128                       
420063    AI     Hya    8h 18m 47.5s    0o 17'  1"   EA+DSC    9.35       8.289676        F0+F5           
420065    AL     Hya    9h 14m 46.2s    2o 48' 17"   E/SD     11.         4.02630         A7              
420072    AS     Hya    9h 30m 46.8s  -18o 56' 14"   EA       10.5       15.99        :                   
420075    AV     Hya    9h 35m  2.5s    5o 19' 24"   EB/KE    10.2        0.6834062       A1              
420081    BC     Hya    9h 49m 56.0s  -22o 49' 39"   E        11.2                                        
420117    CQ     Hya    8h 37m 45.2s    2o 21' 24"   EA/KE    13.5        1.1029227                       
420121    CU     Hya    8h 54m 20.5s    3o 42' 23"   EA       13.5        0.7190774                       
420128    DE     Hya    8h 27m 47.5s    5o 38' 59"   EA/SD    11.         4.227678        A2              
420129    DF     Hya    8h 55m  2.2s    6o  5' 38"   EW/KW    11.         0.3305978       G0              
420132    DI     Hya    9h  6m 51.3s  -12o 31' 37"   EA       11.         0.6147132       A6:             
420133    DK     Hya    9h 44m 53.0s  -20o 54' 13"   EB       10.5        0.521951                        
420135    DM     Hya    9h 54m 13.6s  -23o 25' 53"   EA/SD:   11.9        0.78685     :                   
420148    DZ     Hya   12h  1m 27.7s  -32o 13' 35"   EA/KE    11.4        1.08777                         
420149    EE     Hya   12h  2m 27.2s  -33o 55' 14"   EA/SD    14.2        1.60236                         
420151    EG     Hya   12h  3m 59.8s  -32o  0' 34"   EW       12.6        0.61133                         
420152    EH     Hya   12h  4m 51.0s  -33o  9' 23"   EW/KW    14.2        0.29691                         
420161    ER     Hya   12h 53m 25.3s  -25o 36' 38"   E/SD     13.6        0.651622                        
420164    EU     Hya    8h 42m  3.6s   -6o 43' 49"   EA/DW    10.1        0.7782085       F2              
420167    EX     Hya   12h 52m 24.2s  -29o 14' 56"   UGSU+E    9.6                        pec(UG)         
420169    EZ     Hya    9h 26m 41.1s  -13o 45'  6"   EW/KW    10.4        0.44975201      F9              
420171    FG     Hya    8h 27m  3.9s    3o 30' 52"   EW/KW     9.90       0.327832        G0              
420178    FO     Hya    9h 59m 43.3s  -19o  7' 56"   EA/KE     9.5        1.159                           
420186    FW     Hya   11h  4m 19.8s  -33o 26' 47"   EB       12.2        0.509603                        
420193    GK     Hya    8h 30m 49.3s    2o 16' 27"   EA/DM/    9.35       3.587052        G4V             
420195    GM     Hya    8h 43m 48.2s    5o 51'  1"   EA/DM    11.0       12.18528         G2              
420196    GN     Hya    8h 48m 18.5s    2o  7' 16"   EA       13.2        2.2495444                       
420219    HS     Hya   10h 24m 36.8s  -19o  5' 33"   EA/D      8.07       1.5680420       F3+F4           
420221    HU     Hya    8h 11m  0.9s  -10o 36' 34"   EA/DM     9.4        2.516440        A2              
420230    IM     Hya   12h  9m 51.5s  -32o 27' 57"   EA/SD    11.9        1.7821                          
420253    KT     Hya    8h 30m 37.8s    3o 18' 13"   EA       12.7        3.387024                        
420256    KW     Hya    9h 12m 26.0s   -7o  6' 35"   EA/DM     6.11       7.750           A3mIII:+A0V:    
420258    KY     Hya    9h 22m 43.6s  -18o 10' 40"   EA        9.5                                        
420260    LL     Hya   10h 37m  9.1s  -27o 35' 13"   EA       11.4                                        
420263    LO     Hya    8h 28m 29.1s   -2o 31'  2"   EA/DM     6.37                                       
420300    NY     Hya    9h 21m 22.8s   -6o 40' 20"   EA        8.65                                       
420310    OW     Hya    9h 39m 47.4s  -10o 34' 13"   EA        6.29                                       
420313    OZ     Hya   10h  2m 11.6s  -19o 46'  1"   EA        9.50                                       
420322    PX     Hya   10h 33m 30.7s  -20o 10' 52"   E         8.47                                       
420326    QR     Hya   10h 56m 31.1s  -34o 33' 50"   E         8.51                                       
420333    QY     Hya   12h  9m 20.8s  -27o 58' 56"   EB:       9.07                                       
420340    V0340  Hya   12h 40m 19.2s  -29o 36' 54"   EA        8.24                                       
420353    V0353  Hya   14h 10m 12.3s  -25o 24'  2"   EA        7.51                                       
420356    V0356  Hya   14h 32m  5.1s  -27o 42' 33"   EB        7.56                                       
420358    V0358  Hya    9h 35m  1.8s    4o 45' 22"   EA        9.53                                       
420390    V0390  Hya    8h 13m 40.6s   -1o 12' 22"   EA       11.86                                       
420409    V0409  Hya    9h 10m  9.6s    3o 44' 35"   EW       11.0        0.472271                        
420410    V0410  Hya    9h 12m 44.4s  -14o 41' 17"   EA       10.48       3.1508          A3              
420412    V0412  Hya    9h 14m 28.9s  -13o 41' 39"   EA       12.7        1.89439                         
420426    V0426  Hya    8h 28m 35.2s  -13o 51' 14"   EA       11.55       7.3089          A               
420434    V0434  Hya    9h 51m 16.1s  -26o 36' 34"   EA       12.6        5.9199                          
420441    V0441  Hya   11h 10m 38.0s  -28o 54'  3"   EB       11.05       0.58413                         
420443    V0443  Hya   11h 16m 26.1s  -33o 17' 13"   EA       11.05       4.67017                         
420445    V0445  Hya   11h 23m 58.3s  -33o  8' 24"   EA       13.1        1.50944                         
420453    V0453  Hya   12h 11m  6.7s  -34o 30' 27"   EA       12.85       3.10366                         
420454    V0454  Hya   12h 13m 27.8s  -32o 39' 25"   EA       12.22       2.34751                         
420464    V0464  Hya   14h 14m 21.0s  -26o 53' 18"   EW       13.25       0.342528                        
420468    V0468  Hya    8h 13m  1.3s    1o 19' 41"   RRC      11.2        0.467711                        
420470    V0470  Hya    8h 14m  1.1s    0o 22' 56"   EW       13.30       0.39539                         
420472    V0472  Hya    8h 15m 40.0s    0o 56' 41"   EB       12.3        0.88313                         
420474    V0474  Hya    8h 18m 43.5s    0o 28' 51"   EB       11.8        0.528304                        
420476    V0476  Hya    8h 20m 59.9s    0o 31'  2"   EW       12.65       0.414588                        
420502    V0502  Hya    8h 49m  3.6s  -11o 21'  2"   EA       10.05       2.49447         F0              
420511    V0511  Hya    9h  0m 47.0s  -18o 20' 47"   EA        8.99       2.03915         A1V             
420514    V0514  Hya    9h  1m 38.2s   -2o 11' 58"   EW       13.8        0.374404                        
420519    V0519  Hya    9h 13m 22.9s    4o 32' 36"   EW       12.0        0.401682                        
420542    V0542  Hya   10h 20m 13.6s  -13o 51' 37"   EW       10.28       0.381025                        
420553    V0553  Hya   12h 26m 17.8s  -25o 46' 20"   EW       12.36       0.371497                        
420554    V0554  Hya   13h 28m  1.7s  -27o 29' 48"   EW       12.5        0.302559                        
420555    V0555  Hya   13h 29m  6.0s  -30o  7' 47"   EB       11.82       0.539643                        
429022    khi 2  Hya   11h  5m 57.6s  -27o 17' 16"   EA/DM     5.65       2.267701        B8III-IVe+B8.5V 
========================================================================================================