Collinder 228 is an open cluster within the southern part of the Carina Nebula NGC 3372, about 25' south of η Carinae. 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.
| Star name |
FMF number |
Effective temperature |
Absolute magnitude |
Bolometric magnitude |
Mass (M☉) |
Spectral type |
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: |
