Collinder 228 is an open cluster within the southern part of the Carina Nebula NGC 3372, about 25' south of . It is probably composed of stars which recently formed from the material in the nebula. QZ Carinae is the brightest member of Collinder 228 with an apparent magnitude between 6.16–6.49.
+ Prominent stars in Collinder 228 Starname FMFnumber Effectivetemperature Absolutemagnitude Bolometricmagnitude Mass() Spectraltype Ref. WR 24(HD 93131) 3 50100 −7.34 −11.4 114 WN6ha-w QZ Car(HD 93206) 33 30400 + 20000 +34000 + 32900 −9.2 + 3 +8.5 + 7 −10.6 27.1 + 6.5 +25.4 + 17.1 O9.7I + B2V +O8III + O9V HD 93632 92 45400 −6.1 −10.2 76 O5III(f) V661 Car(HD 93130) 1 39900 −6.3 −10.1 68 O7II(f) HD 305525 98 43600 −5.7 −9.8 58 O6V 97 46100 −4.8 −9 47 O5V HD 93146 42400 −5.1 −9.1 44 O6.5V((f)) HD 305524 7 41000 −5.2 −9.1 42 O7V((f)) HD 93222 6 37200 −5.7 −9.3 42 O8III((f)) HD 305523 32 35700 −5.6 −9.1 38 O8.5III HD 305532 38 43600 −4.4 −8.5 38 O6V((f)) HD 305438 24 38500 −4.6 −8.4 32 O8V HD 93028 27 35700 −4.9 −8.4 30 O8.5III HD 305518 22 34700 −5 −8.3 29 O9.5V HD 93027 14 36000 −4.8 −8.3 29 O9V 39 37200 −4.6 −8.2 29 O8.5V((f)) HD 305539 94 37200 −4.4 −8.1 28 O8.5V 67 36000 −4.7 −8.2 28 O9V HD 93576 93 36000 −4.7 −8.2 28 O9V 21 37200 −4.2 −7.8 27 O8.5V HD 305536 5 34700 −4.7 −8.1 26 O9.5V 66 34700 −3.9 −7.3 22 O9.5V 12 20900 −6.1 −8 20 B2.5Ia:
See also
List of most massive stars
References