Lynga catalogue

 Field                          Data

 Cluster number (IAU)          C0040+615
 Old Cluster                   NGC
 notation                      225
 OCL number/Lund number        305    25
 Right ascension (1950.0)        40.5
 Declination (1950.0)          +61 31
 10 year prec. RA/Dec          .59  3.3
 Galactic longitude            121.99
 Galactic latitude             -1.08
 Sky survey                    POSS
 Chart type and number         O  596
 Centre of chart (RA,Dec)        44  60
 Pos. on chart x,y mm          226   225
 Tr. cl. (ref. 19/320=a/b)     III 1 p n:b
 Membership (320)              15
 Angular diameter (320)        14
 Selected angular diameter     12 (  16)
 Distance, weight              657
 Distance, reference           630 (  50)
 E(B-V), v=var.                0.274
 Turn-off col.,weight (jdl)    -.10  w= 1
 Derived log(age)              8.114
 log(age), reference           8.15 ( 214)
 Fe/H (jdl)                    
 Radial velocity, weight       
 References                    209 /
 used by                       
 Janes, Duke                   
 and Lynga (jdl)               
 Number of member              
 stars with                    
 peculiar                      
 spectral                      
 types                         
 References for                
 peculiar                      
  stars                        
 Total V magnitude             7.0 ( 422)
 Integrated B-V (422)          .43
 Number of obs. stars (422)    76
 Richness class (265)          2
 Earliest sp. cl. (50,37)      B 8  A 2
 Mag of brightest star (50)    
 Galactic R and z              8840  -11
 Linear diameter               2.3
 Comment                       D