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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).

Lep

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            
========================================================================================================
480005    V      Lep    6h 10m 58.6s  -20o 12' 42"   EB/KE     9.6        1.0701048       A5              
480009    Z      Lep    5h 10m 10.0s  -14o 52' 17"   E        11.         0.993715        F0              
480010    RR     Lep    5h 12m 10.5s  -13o 11' 59"   EB       10.2        0.915428        A2              
480011    RS     Lep    5h 59m 18.4s  -20o 13' 25"   EA/SD     9.91       1.2885439       A2V             
480013    RU     Lep    6h  3m 52.3s  -24o 54'  7"   EA       11.23       4.459601                        
480021    SU     Lep    5h 22m 42.2s  -13o 47' 51"   EA       12.2        2.993        /  F:              
480027    TT     Lep    6h  6m 48.9s  -21o 37' 38"   E        12.1        4.28885                         
480073    AT     Lep    5h 48m 17.1s  -25o  2' 31"   EA       11.45      10.6495                          
480081    BC     Lep    5h 45m 30.6s  -17o 46' 34"   EA       10.58       3.9895                          
========================================================================================================