Collinder 228

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0.75 UTI
0.62
CN
1.0
Cdens
0.75
CC3
0.69
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 75
Radius (P>50% members) 3.5 [arcmin]
  • CN 0.62 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.69 Moderately studied
  • Cdup 1.0 Unique
📥 Members 📊 Colab 🔬 Bayestar19 🔍 SciX 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview
Collinder 228 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is moderately studied in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Very young

Cavallo et al. (2024): Silver sample.

Data
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 161.009 -60.09 0.399 -6.698 1.921 -11.487
Hunt & Reffert 2024 161.011 -60.091 0.399 -6.668 1.92 -28.406
Cavallo et al. 2024 161.013 -60.081 0.399 – – –
Hunt & Reffert 2023 161.011 -60.091 0.399 -6.668 1.92 -28.406
Loktin & Popova 2017 160.995 -60.087 – -6.55 2.03 -13.5
Piskunov et al. 2008 160.939 -60.085 – – – –
Kharchenko et al. 2007 160.99 -60.09 – 0.35 – -13.46
Kharchenko et al. 2005 160.95 -60.09 – -6.66 1.93 -13.46
Kharchenko et al. 2003 160.99 -60.09 – -6.3 2.67 –
Chen et al. 2003 160.749 -59.966 – -6.55 2.03 -12.0
Dias et al. 2002 161.0 -60.087 – -6.55 2.03 -10.71
Dambis 1999 161.0 -60.087 – – – –

💡 Note: The UCC values are estimated from its identified members.

Reference Year Dist [kpc] Av [mag] DAv [mag] Age [Myr] [Fe/H] [dex] Mass [Msun] Bfr BSS
Hunt & Reffert 2024 – – – – – 327* – –
Cavallo et al. 2024 1.91 0.58 – 59 -0.140 – – –
Hunt & Reffert 2023 2.32 0.96 1.06 5 – – – –
Loktin & Popova 2017 1.91 1.05 – 7 – – – –
Piskunov et al. 2008 1.91 0.81 – 5 – – – –
Kharchenko et al. 2005 1.91 0.81 – 5 – – – –
Kharchenko et al. 2003 2.22 0.93 – – – – – –
Chen et al. 2003 2.20 – – 0 – – – –
Dias et al. 2002 2.20 1.06 – 7 – – – –
Dambis 1999 2.29 1.04 – 3 – – – –

💡 Note: The parameters are sometimes transformed from their original values to match the format of the columns shown here, see FAQ. The columns DAv, Bfr, BSS correspond to differential extinction, binary fraction, and blue stragglers, respectively. BSS values can be listed as fractions or integers.
(*): indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0550 33.3 161.01 -60.1 0.4 -6.61 1.9 -28.44 0.0

💡 Note: The % column shows the percentage of members that Collinder 228 shares with each listed object.

Visualization
Collinder 228 UCC
Collinder 228 HUNT23
Galactocentric position diagram

💡 Note: How are the galactocentric plots generated? See FAQ.