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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).

Cha

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            
========================================================================================================
220009    Z      Cha    8h  7m 28.2s  -76o 32'  1"   UGSU+E   11.5      104.1          )  pec(UG)         
220011    RS     Cha    8h 43m 12.2s  -79o  4' 12"   EA+DSC    6.02       1.669870        A5V+A7V         
220012    RT     Cha   10h 10m 31.7s  -80o 36' 16"   RR       14.                                         
220015    RW     Cha   10h 32m 38.5s  -80o 50' 40"   EW/KE:   14.0        0.6385                          
220017    RY     Cha   10h 39m 19.5s  -77o  5' 38"   EB/SD    13.8        1.778                           
220018    RZ     Cha   10h 42m 24.1s  -82o  2' 14"   EA/DM     8.2        2.832084        F5+F5V          
220028    TU     Cha   10h 57m 57.5s  -79o 23' 54"   EA       13.3                                        
220031    TX     Cha   11h  2m  2.2s  -81o 24' 43"   EA       13.0                                        
220053    YZ     Cha   11h 34m  9.1s  -77o 44' 35"   EA/DM    11.15       4.457357        A0              
220072    AS     Cha   12h 30m 11.3s  -76o 45' 45"   EA/SD    14.0        0.8414                          
220091    BN     Cha   13h 15m 55.3s  -79o 13' 56"   EA/SD    14.2        6.273                           
220100    BW     Cha   13h 40m 16.9s  -78o 22' 37"   EA/SD:   11.67       2.116255                        
220108    CG     Cha   10h 31m 57.0s  -79o 51'  1"   EW/KW    13.9        0.37652                         
220109    CH     Cha   10h 36m 45.5s  -79o 25'  4"   EW/KW    14.3        0.4394                          
220124    CX     Cha   10h 44m 16.9s  -78o 39' 47"   EW/KW    15.2        0.3604                          
220125    CY     Cha   10h 47m 21.6s  -79o 29' 31"   EW/KW    13.5        0.4440                          
220126    CZ     Cha   10h 53m 17.5s  -79o 41' 41"   EW       14.0        0.6250                          
220127    DD     Cha   11h  8m 57.2s  -80o 40' 49"   EW       14.2        0.5716                          
220130    DG     Cha   12h 41m  8.5s  -78o 40' 38"   EW/KE:   13.8        1.0128      :                   
220140    DR     Cha   10h 41m 51.5s  -79o 47'  0"   E         5.94                                       
220166    EW     Cha    9h 14m  2.6s  -82o 13' 12"   EA        8.60       3.81876         A1V             
220199    GQ     Cha   10h  4m 52.5s  -79o 28'  5"   EA       13.65       2.09192                         
220236    IS     Cha   12h 43m 38.3s  -77o 46' 14"   EA       13.7        4.9695                          
========================================================================================================