Collinder 178

(VDBH 22; NGC 2546; MWSC 1447; OCL 726; vdBergh-Hagen 22; ESO 369 07; FoF 2217)

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0.97 UTI
0.84
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 345
Stellar density (N50/rad) 17.6 [N/pc2]
C3 classification AA
  • CN 0.84 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Collinder 178 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Collinder 178 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 123.099 -37.667 1.064 -3.724 3.938 14.868
Li et al. 2025 123.082 -37.661 1.034 -3.757 3.862 –
Wei et al. 2025 123.122 -37.67 1.075 -3.734 3.971 –
Almeida et al. 2025 123.091 -37.649 – – – –
Alfonso et al. 2024 123.138 -37.673 1.035 -3.716 3.939 –
Hunt & Reffert 2024 123.015 -37.643 1.065 -3.711 3.94 15.102
Cavallo et al. 2024 123.138 -37.652 1.066 – – –
Hunt & Reffert 2023 123.015 -37.643 1.065 -3.711 3.94 15.102
Almeida et al. 2023 123.097 -37.637 – – – –
Cordoni et al. 2023 123.091 -37.649 1.035 -3.769 3.86 –
Just et al. 2023 122.958 -37.607 – – – –
He et al. 2022 123.119 -37.644 1.07 -3.717 3.954 –
Tarricq et al. 2022 123.108 -37.645 1.056 -3.709 3.921 –
Jaehnig et al. 2021 123.122 -37.669 1.062 -3.754 3.902 –
Rain et al. 2021 123.082 -37.661 1.034 -3.757 3.862 –
Dias et al. 2021 123.091 -37.649 1.035 -3.769 3.86 15.907
Cantat-Gaudin et al. 2020 123.082 -37.661 1.034 -3.757 3.862 –
Cantat-Gaudin & Anders 2020 123.082 -37.661 1.034 -3.757 3.862 –
Liu & Pang 2019 123.131 -37.698 1.037 -3.781 3.891 –
Bossini et al. 2019 123.082 -37.661 – – – –
Soubiran et al. 2018 123.082 -37.661 – – – 16.2
Bica et al. 2019 123.065 -37.587 – – – –
Cantat-Gaudin et al. 2018 123.082 -37.661 1.034 -3.757 3.862 –
Loktin & Popova 2017 123.06 -37.595 – -3.99 3.5 36.0
Kharchenko et al. 2016 122.958 -37.607 – – – –
Dias et al. 2014 123.062 -37.595 – -3.41 3.18 –
Kharchenko et al. 2013 122.962 -37.61 – -5.21 5.1 36.0
Gozha et al. 2012 123.063 -37.595 – – – –
Piskunov et al. 2008 122.978 -37.609 – – – –
Kharchenko et al. 2007 123.06 -37.6 – 0.61 – 36.0
Piskunov et al. 2007 122.978 -37.609 – – – –
van den Bergh 2006 122.975 -37.617 – – – –
Kharchenko et al. 2005 122.98 -37.61 – -5.21 4.57 36.0
Kharchenko et al. 2003 122.98 -37.61 – -4.71 4.24 –
Chen et al. 2003 123.089 -37.635 – -2.92 4.71 15.0
Dias et al. 2002 123.062 -37.595 – -3.99 3.5 15.24
Dambis 1999 123.062 -37.595 – – – –

💡 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] Bfrac BSS
UCC 99999– 0.92 0.43 0.67 112 0.120 1088 0.42 0.0
Li et al. 2025 0.90 0.42 – 212 0.046 – – –
Wei et al. 2025 1.22 0.67 – 98 0.250 1088 0.42 –
Almeida et al. 2025 0.94 0.56 – 144 – 344 – –
Alfonso et al. 2024 0.93 0.43 – 116 0.110 – – –
Hunt & Reffert 2024 – – – – – 1009(1) – –
Cavallo et al. 2024 0.92 0.45 – 162 0.340 – – –
Hunt & Reffert 2023 0.89 0.23 0.67 165 – – – –
Almeida et al. 2023 0.90 0.54 – 175 0.023 558(1) 0.42 –
Cordoni et al. 2023 0.94 0.56 – 144 0.112 943 0.33 0.00
Just et al. 2023 – – – 136 – 3184 – –
He et al. 2022 – 0.60 – 112 – – – –
Tarricq et al. 2022 0.91 – – 145 – – – –
Jaehnig et al. 2021 0.94(1) – – – – – – –
Rain et al. 2021 0.94 0.43 – 91 – – – 0
Dias et al. 2021 0.94 0.56 – 144 0.112 – – –
Cantat-Gaudin et al. 2020 0.93 0.43 – 141 – – – –
Cantat-Gaudin & Anders 2020 0.94 – – – – – – –
Liu & Pang 2019 – – – 98 0.250 – – –
Bossini et al. 2019 0.92 0.46 – 92 0.010 – – –
Soubiran et al. 2018 0.94 – – – – – – –
Cantat-Gaudin et al. 2018 0.94 – – – – – – –
Loktin & Popova 2017 0.90 0.42 – 75 – – – –
Kharchenko et al. 2016 0.94 0.45 – 136 – – – –
Kharchenko et al. 2013 0.94 0.45 – 136 0.120 – – –
Gozha et al. 2012 0.92 – – 75 0.120 2291 – –
Piskunov et al. 2008 0.92 0.40 – 83 – 4498(1) – –
Piskunov et al. 2007 0.92 0.40 – 83 – 1652 – –
van den Bergh 2006 0.92 0.40 – 74 – – – –
Kharchenko et al. 2005 0.92 0.40 – 83 – – – –
Kharchenko et al. 2003 0.92 0.40 – – – – – –
Chen et al. 2003 0.92 0.42 – 70 0.120(1) – – –
Dias et al. 2002 0.92 0.42 – 75 0.120 – – –
Dambis 1999 0.52 0.45 – 100 – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization
ℹī¸
Collinder 178 UCC
Collinder 178 HUNT23
Collinder 178 CANTAT20
Galactocentric position diagram