SU Boo      
 
                                                     
System Type:        
         
GCVS 4 Eph.   21071.397 1.561248      
       
--- Working ----        
Epoch =   21071.397      
Period =   1.561248      
       
  Linear Quadratic      
LS Intercept =   -0.03092032          
LS Slope =   1.84467E-06          
LS Quadr term = na          
Sum diff² =        
New epoch =   52667.9434        
New Period =   1.561249845        
       
New Ephemeris = 52667.9434 1.56125      
       
Source Typ ToM error n' n O-C GCVS 4 BBSAG IBVS Nelson S4 S5 Misc Lin Fit Q. Fit Date  
GCVS 4   21071.397 na 0 0 0 0   -0.0309   7/26/1916  
AN 301,327   42869.559   13962.01 13962 0.01742   0.01742 -0.0052   4/1/1976   v       K
BBSAG Bull.106 49409.587   18150.99 18151 -0.0224   -0.02245   0.00256   2/26/1994   v 20   Paschke A   B
BBSAG Bull.113 50149.643 0.005 18625 18625 0.002   0.002   0.00344   3/7/1996   ccd 69   Paschke A   B
BBSAG Bull.115 50541.513 0.009 18876 18876 -0.0012   -0.00125   0.0039   4/3/1997   v 20   Dedoch A   B
BBSAG Bull.118 50947.4574 0.0012 19136.01 19136 0.01867   0.01867   0.00438   5/13/1998   ccd 14   Diethelm R   B
BBSAG Bull.28   42905.464   13985.01 13985 0.01372   0.01372   -0.0051   5/6/1976   v 8   Peter H   B
BBSAG Bull.66   45428.449   15601.01 15601 0.02195   0.02195   -0.0021   4/3/1983   v 18   Wils P   B
BBSAG Bull.9   41795.374   13273.98 13274 -0.029   -0.02895   -0.0064   4/22/1973   v 8   Diethelm R   B
BRNO 20   42624.416   13804.99 13805 -0.0096   -0.00964 -0.0055   7/30/1975   v   K
BRNO 20   42624.418   13805 13805 -0.0076   -0.00764 -0.0055   7/30/1975   v   K
BRNO 20   42624.418   13805 13805 -0.0076   -0.00764 -0.0055   7/30/1975   v   K
BRNO 21   42955.387   14016.99 14017 -0.0232   -0.02322 -0.0051   6/25/1976   v   K
BRNO 21   42980.402   14033.01 14033 0.01182   0.01182 -0.005   7/20/1976   v   K
BRNO 23   44371.44   14923.99 14924 -0.0222   -0.02215 -0.0034   5/11/1980   v   K
BRNO 23   44371.458   14924 14924 -0.0042   -0.00415 -0.0034   5/11/1980   v   K
BRNO 23   44371.472   14924.01 14924 0.00985   0.00985 -0.0034   5/11/1980   v   K
BRNO 26   44691.5   15128.99 15129 -0.018   -0.01799 -0.003   3/28/1981   v   K
BRNO 26   44691.502   15128.99 15129 -0.016   -0.01599 -0.003   3/28/1981   v   K
BRNO 26   44691.508   15128.99 15129 -0.01   -0.00999 -0.003   3/28/1981   v   K
BRNO 26   44727.437   15152.01 15152 0.0103   0.0103 -0.003   5/2/1981   v   K
BRNO 26   45823.421   15854 15854 -0.0018   -0.00179 -0.0017   5/2/1984   v   K
BRNO 26   45823.424   15854 15854 0.00121   0.00121 -0.0017   5/2/1984   v   K
BRNO 27   46182.504   16084 16084 -0.0058   -0.00583 -0.0013   4/27/1985   v   K
BRNO 30   47289.436   16793 16793 0.00134   0.00134 5.7E-05   5/7/1988   v   K
BRNO 30   47289.442   16793 16793 0.00734   0.00734 5.7E-05   5/7/1988   v   K
BRNO 31   48385.433   17495 17495 0.00224   0.00224 0.00135   5/8/1991   v   K
BRNO 31   48385.442   17495.01 17495 0.01124   0.01124 0.00135   5/8/1991   v   K
IBVS 4887   50235.5048 0.0038 18680 18680 -0.0048   -0.00484   -0.00484 0.00354   6/1/1996  
RHN 2003   52667.9434 0.0002 20238.01 20238 0.00938   0.00938   0.00641   1/28/2003