Collinder 228
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 and 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: | ||
| Collinder 228 | |
|---|---|
| Observation data (J2000 epoch) | |
| Right ascension | 10h 44m 00.0s |
| Declination | −60° 05′ 12″ |
| Distance | 10,000 ly |
| Apparent magnitude (V) | 4.4 |
| Apparent dimensions (V) | 14 |
| Physical characteristics | |
| Other designations | OCl 828.0, MWSC 1845, C 1041-597, KPR2004b 262 |
| Associations | |
| Constellation | Carina |
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