O-C DIAGRAMS AND UP-TO-DATE LINEAR
ELEMENTS OF ECLIPSING BINARIES

Heliocentric orbital phase is calculated based on YOUR COMPUTER TIME !!!!

When using this database please include a citation to: J.M. Kreiner, 2004, Acta Astronomica, vol. 54, pp 207-210.

Dra

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/S   | 10.8        1.3574560     *|F4V           
340010   RR     Dra   18h 41m 47.4s   62o 40' 35"    |EA/S   | 10.0        2.8313215      |A2            
340016   RX     Dra   19h  2m 42.0s   58o 43' 58"    |EA/D   | 10.0        3.7863886     *|F             
340018   RZ     Dra   18h 23m  5.4s   58o 54' 12"    |EB/S   | 10.11       0.5508738      |A5            
340024   SX     Dra   18h  4m 33.9s   58o 23' 54"    |EA/S   |  9.8        5.16952        |A7V           
340030   TW     Dra   15h 33m 51.1s   63o 54' 25"    |EA/S   |  8.0        2.8068470      |A8V+K0III     
340033   TZ     Dra   18h 22m 11.7s   47o 34'  8"    |EA/S   |  9.6        0.8660347     *|A7V           
340039   UZ     Dra   19h 25m 55.0s   68o 56'  7"    |EA/D   |  9.9        3.2613024      |F8            
340045   WW     Dra   16h 39m  4.0s   60o 41' 58"    |EA/A   |  8.3        4.6296238     *|G2IV+K0IV     
340046   WX     Dra   18h 52m 10.4s   47o 48' 17"    |EA/S   | 13.5        1.8018647      |              
340050   XY     Dra   18h 18m 17.1s   55o  3' 32"    |EA/S   | 13.4        2.31422        |              
340052   YY     Dra   11h 43m 35.0s   71o 42'  9"    |EA/S   | 12.9        4.21123        |              
340063   AI     Dra   16h 56m 18.1s   52o 41' 54"    |EA/S   |  7.05       1.1988146     *|A0V           
340064   AK     Dra   18h 16m 43.2s   53o 14' 47"    |EA     | 11.8        2.218237       |F3            
340071   AR     Dra   12h 16m 36.5s   64o 51' 27"    |EA/S   | 11.29       0.6758375      |F5V           
340074   AU     Dra   17h 35m 21.3s   68o 38' 19"    |EA/S   | 12.3        0.51514        |              
340077   AX     Dra   12h 40m 14.7s   66o 17'  9"    |EB     | 10.9        0.5681644      |F5            
340083   BE     Dra   18h 25m 56.9s   68o 57' 43"    |EB/K   | 11.3        0.5224911      |B             
340084   BF     Dra   18h 50m 59.3s   69o 52' 57"    |EA     | 10.1        5.60545       *|F8            
340086   BH     Dra   19h  3m 39.5s   57o 27' 25"    |EA/S   |  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/S   | 14.6        3.5293        *|              
340091   BN     Dra   19h 47m  8.0s   61o 22' 11"    |EA/S   | 14.3        5.93015        |              
340093   BP     Dra   19h 57m 43.2s   60o  0' 53"    |EB/K   | 14.4        0.9868         |              
340096   BS     Dra   19h 56m 28.8s   73o 36' 57"    |EA/D   |  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/S   | 10.4        1.91417       *|F5            
340099   BV     Dra   15h 11m 50.4s   61o 51' 25"    |EW/K   |  7.88       0.3500671      |F7V           
340100   BW     Dra   15h 11m 50.1s   61o 51' 41"    |EW/K   |  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/S   | 11.3        4.994511       |              
340113   CM     Dra   16h 34m 20.2s   57o  9' 43"    |EA+U   | 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' 12"    |EA     | 11.2        0.784          |B9            
340129   DF     Dra   20h 38m 46.4s   69o 36'  8"    |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/S   | 14.                        |              
340150   EF     Dra   18h  5m 30.5s   69o 45' 15"    |EW/K   | 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' 20"    |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' 30"    |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'  7"    |EA     |  8.59                      |              
340208   GZ     Dra   18h 12m 41.0s   54o 46'  6"    |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'  6"    |EB     |  7.35                      |              
340216   HP     Dra   18h 54m 53.5s   51o 18' 29"    |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' 30"    |EA     | 11.2                       |              
340262   LN     Dra   17h 45m 55.4s   52o 38'  4"    |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/R   | 12.2                       |              
340274   LZ     Dra   19h 34m 33.8s   74o  3'  5"    |EW/K   | 12.4                       |              
340275   MM     Dra   19h 59m 44.3s   65o 10'  5"    |EW     | 14.45                      |              
340277   MO     Dra   20h 23m 57.6s   63o  2' 32"    |EA     | 12.93                      |              
340283   MU     Dra   18h 58m 35.3s   50o  9' 29"    |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 52' 59"    |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' 54"    |EA     | 11.27      50.517          |              
340295   NT     Dra    9h 43m 42.9s   77o 26' 49"    |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' 57"    |EA     | 12.85       1.05715        |              
340298   NW     Dra   11h 32m  5.9s   69o 57' 41"    |EA     | 12.91       0.728091       |              
340302   OO     Dra   11h 40m  1.4s   75o  9' 21"    |EA+D   | 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 33.8s   55o 33' 13"    |EB     | 13.9        0.320947       |              
340316   PR     Dra   14h 35m 10.6s   59o 30' 34"    |EW     | 13.3        0.37476        |              
340318   PT     Dra   14h 59m  9.3s   55o  8' 48"    |EW     | 14.3        0.27077        |              
340320   PV     Dra   15h  6m 27.7s   60o 18' 20"    |EA     | 13.3        1.27745        |              
340322   PX     Dra   15h  7m 50.2s   63o  7'  1"    |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'  2"    |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' 29"    |EA     | 10.10       1.65042        |F8            
340342   V0342  Dra   15h 53m  2.3s   55o  4' 32"    |EW     | 12.65       0.39221        |              
340344   V0344  Dra   15h 57m  9.1s   58o 10'  0"    |EW     | 13.7        0.3329         |              
340345   V0345  Dra   16h  0m 48.0s   51o 16' 48"    |EW     | 13.2        0.29190        |              
340347   V0347  Dra   16h  8m 32.6s   63o 18' 38"    |EA/R   | 12.4        0.507280       |              
340348   V0348  Dra   16h 10m 33.7s   51o 44'  0"    |EW     | 11.1        0.43551        |              
340349   V0349  Dra   16h 13m 22.0s   51o 55' 22"    |EW     | 11.3        0.38987        |              
340353   V0353  Dra   16h 27m 49.1s   58o 50' 23"    |EB     | 11.25       0.80272        |              
340357   V0357  Dra   16h 55m 57.2s   68o 12'  0"    |EW     | 11.55       0.619276       |              
340362   V0362  Dra   17h 11m 12.1s   68o 33' 24"    |EW     | 12.11       0.3472223      |              
340365   V0365  Dra   17h 16m 48.3s   54o 46' 14"    |EW     | 11.82       0.35396        |              
340372   V0372  Dra   17h 25m 40.8s   59o 15' 31"    |EB/R   | 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' 29"    |EW     |  9.93       0.40346        |F8            
340376   V0376  Dra   17h 35m  0.1s   68o 59' 24"    |EA     | 12.70       1.21019        |              
340380   V0380  Dra   17h 45m 24.5s   69o 18' 22"    |EA     | 12.28       0.4937         |              
340381   V0381  Dra   17h 46m 30.5s   53o 11' 57"    |EA+D   | 10.6        2.71066        |A7IV-V        
340386   V0386  Dra   17h 53m  4.3s   51o 29' 20"    |EW     | 13.40       0.2389133      |              
340388   V0388  Dra   17h 56m  9.6s   71o 26' 40"    |EB     | 11.77       0.457033       |              
340391   V0391  Dra   17h 59m 10.4s   58o 42' 59"    |EA/R   | 10.90       1.2314         |              
340400   V0400  Dra   18h 16m 57.8s   69o 26' 45"    |EW     | 12.40       0.41938        |              
340402   V0402  Dra   18h 21m 13.9s   65o 15'  9"    |EW     | 10.93       1.38061        |              
340404   V0404  Dra   18h 30m 53.1s   48o 58' 48"    |EW     | 11.57       0.347625       |              
340405   V0405  Dra   18h 31m 13.4s   52o 47'  7"    |EW     | 11.54       0.413036       |              
340413   V0413  Dra   18h 47m 29.6s   49o 25' 55"    |EA     |  7.19       4.243          |F5            
340414   V0414  Dra   18h 53m 30.2s   63o 55'  3"    |RRC    | 11.52       0.348087       |              
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'  4"    |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' 17"    |EA     | 12.24      11.628188       |              
340435   V0435  Dra   20h  4m 46.8s   68o 29' 57"    |EW     | 12.32       0.522205       |              
340436   V0436  Dra   20h  5m 29.4s   71o 10' 21"    |EW     | 14.15       0.430210       |              
340437   V0437  Dra   20h  6m 46.2s   63o 18' 37"    |EW     | 13.75       0.316058       |              
340439   V0439  Dra   20h  9m 28.1s   65o 45' 43"    |EW     | 13.35       0.678499       |              
340441   V0441  Dra   20h 12m 39.6s   82o 38' 21"    |EA     | 12.45       2.90540        |              
340444   V0444  Dra   20h 18m 53.8s   70o 17' 32"    |EW     | 13.55       0.354497       |              
340445   V0445  Dra   20h 22m 26.0s   74o  4' 32"    |EW     | 13.4        0.321451       |              
340449   V0449  Dra   20h 34m  2.6s   81o 31'  0"    |EW     | 12.23       0.351332       |              
340450   V0450  Dra   11h 11m 28.9s   73o  6' 55"    |EW     |  8.86       0.439402       |F5            
340471   V0471  Dra   15h  6m 17.4s   56o 41'  7"    |EW     | 11.13       0.31997        |              
340491   V0491  Dra   16h 23m 42.1s   60o  3' 22"    |EA     | 14.08       0.6697662      |              
340496   V0496  Dra   16h 28m 15.6s   62o 43'  2"    |EA     | 14.23       0.891255       |              
340499   V0499  Dra   16h 49m 38.5s   64o 19' 12"    |EW     | 13.89       0.2682144      |              
340509   V0509  Dra   17h 15m 20.9s   58o 28' 37"    |EW     | 12.0        0.409522       |              
340510   V0510  Dra   17h 16m 26.2s   69o 35'  3"    |EW     | 13.29       0.3229625      |              
340514   V0514  Dra   17h 19m 54.8s   69o 47' 42"    |EW     | 12.71       0.3142183      |              
340518   V0518  Dra   17h 33m 16.8s   70o 42' 26"    |EB     | 12.22       0.631832       |              
340527   V0527  Dra   18h 38m 56.2s   60o 23' 53"    |EB     | 10.44       0.744805       |              
340532   V0532  Dra   18h 56m  2.9s   72o  5' 39"    |EW     | 12.54       0.417827       |              
340539   V0539  Dra   19h 30m  0.0s   70o 12' 37"    |EW     | 13.36       0.333096       |              
340541   V0541  Dra   19h 47m 52.6s   72o 47' 39"    |EW     | 12.02       0.559461       |              
340548   V0548  Dra   14h 49m 27.7s   57o 17' 55"    |EW     |  9.84       0.275183       |              
340550   V0550  Dra   15h 47m 10.6s   53o  2' 10"    |EW     |  9.74       0.3266528      |              
340554   V0554  Dra   16h 41m  5.8s   60o 36' 22"    |EW     | 11.42       0.488412       |              
340579   V0579  Dra   19h  4m 24.0s   54o 13' 47"    |EW     | 15.5        0.2587579      |              
340580   V0580  Dra   19h  5m 58.0s   70o 12' 27"    |EW     | 11.65       0.5218094      |              
340584   V0584  Dra   19h 21m  4.5s   56o 19' 42"    |EW     | 10.66       0.3342955      |              
========================================================================================================