Lynga catalogue

 Field                          Data

 Cluster number (IAU)          C1022-575
 Old Cluster                   Westerlund
 notation                      2
 OCL number/Lund number        807   542
 Right ascension (1950.0)      10 22.1
 Declination (1950.0)          -57 30
 10 year prec. RA/Dec          .37 -2.9
 Galactic longitude            284.26
 Galactic latitude             -.33
 Sky survey                    ESO
 Chart type and number         R  168
 Centre of chart (RA,Dec)      10 27 -55
 Pos. on chart x,y mm          187    18
 Tr. cl. (ref. 19/320=a/b)     IV 1 p n:b
 Membership (320)              12
 Angular diameter (320)        2.0
 Selected angular diameter     1.5 ( 487)
 Distance, weight              1874
 Distance, reference           5000 (  64)
 E(B-V), v=var.                0.785
 Turn-off col.,weight (jdl)    -.35  w= 2
 Derived log(age)              7.215
 log(age), reference           6.00 ( 502)
 Fe/H (jdl)                    
 Radial velocity, weight       
 References                    350 /
 used by                       
 Janes, Duke                   
 and Lynga (jdl)               
 Number of member              
 stars with                    
 peculiar                      
 spectral                      
 types                         
 References for                
 peculiar                      
  stars                        
 Total V magnitude             10.5 ( 422)
 Integrated B-V (422)          1.09
 Number of obs. stars (422)    9
 Richness class (265)          1
 Earliest sp. cl. (50,37)      O
 Mag of brightest star (50)    
 Galactic R and z              8730  -28
 Linear diameter               2.2
 Comment