Lynga catalogue

 Field                          Data

 Cluster number (IAU)          C0811-056
 Old Cluster                   NGC
 notation                      2548
 OCL number/Lund number        584   439
 Right ascension (1950.0)      8 11.3
 Declination (1950.0)          -5 39
 10 year prec. RA/Dec          .49 -1.7
 Galactic longitude            227.92
 Galactic latitude             15.37
 Sky survey                    POSS
 Chart type and number         O  702
 Centre of chart (RA,Dec)      8     -6
 Pos. on chart x,y mm          86   210
 Tr. cl. (ref. 19/320=a/b)     I 3 r  :b
 Membership (320)              80
 Angular diameter (320)        29
 Selected angular diameter     54 ( 315)
 Distance, weight              769
 Distance, reference           610 (  50)
 E(B-V), v=var.                0.031
 Turn-off col.,weight (jdl)    .00  w= 3
 Derived log(age)              8.557
 log(age), reference           8.48 ( 337)
 Fe/H (jdl)                    +0.08
 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             5.8 ( 422)
 Integrated B-V (422)          .31
 Number of obs. stars (422)    37
 Richness class (265)          1
 Earliest sp. cl. (50,37)      A    A   
 Mag of brightest star (50)    8.0
 Galactic R and z              8910  166
 Linear diameter               9.6
 Comment