Collinder 131

(NGC 2354; MWSC 1148; OCL 639; ESO 492 06; FSR 1291; FoF 662)

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0.98 UTI
0.88
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 435
Stellar density (N50/rad) 27.3 [N/pc2]
C3 classification AA
  • CN 0.88 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Collinder 131 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

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

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 131 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 108.502 -25.726 0.772 -2.866 1.856 33.468
Li et al. 2025 108.503 -25.724 0.753 -2.885 1.832 –
Hu & Soubiran 2025 108.477 -25.738 – – – –
Wei et al. 2025 108.511 -25.712 0.771 -2.87 1.886 –
Almeida et al. 2025 108.515 -25.738 – – – –
Hunt & Reffert 2024 108.443 -25.724 0.777 -2.87 1.853 31.751
Cavallo et al. 2024 108.477 -25.738 0.777 – – –
Hunt & Reffert 2023 108.443 -25.724 0.777 -2.87 1.853 31.751
Almeida et al. 2023 108.523 -25.737 – – – –
Just et al. 2023 108.529 -25.691 – – – –
Tarricq et al. 2022 108.452 -25.729 0.778 -2.864 1.858 –
Jaehnig et al. 2021 108.48 -25.721 0.784 -2.904 1.827 –
Rain et al. 2021 108.503 -25.724 0.753 -2.885 1.832 –
Dias et al. 2021 108.515 -25.738 0.752 -2.89 1.817 36.157
Cantat-Gaudin et al. 2020 108.503 -25.724 0.753 -2.885 1.832 –
SΓ‘nchez et al. 2020 108.542 -25.69 – -2.861 1.773 –
Cantat-Gaudin & Anders 2020 108.503 -25.724 0.753 -2.885 1.832 –
Liu & Pang 2019 108.496 -25.744 0.749 -2.889 1.839 –
Soubiran et al. 2018 108.503 -25.724 – – – 34.38
Bica et al. 2019 108.544 -25.691 – – – –
Cantat-Gaudin et al. 2018 108.503 -25.724 0.753 -2.885 1.832 –
Loktin & Popova 2017 108.54 -25.69 – -3.079 1.837 33.4
Kharchenko et al. 2016 108.529 -25.691 – – – –
Dias et al. 2014 108.542 -25.69 – -2.92 1.67 –
Kharchenko et al. 2013 108.535 -25.693 – -2.55 3.59 33.4
Gozha et al. 2012 108.542 -25.69 – – – –
Piskunov et al. 2008 108.519 -25.691 – – – –
Kharchenko et al. 2007 108.54 -25.69 – 0.18 – –
van den Bergh 2006 108.529 -25.74 – – – –
Kharchenko et al. 2005 108.52 -25.69 – -5.41 -1.14 –
Kharchenko et al. 2003 108.57 -25.73 – -8.45 0.38 –
Chen et al. 2003 108.549 -25.722 – -3.52 1.39 -4.0
Dias et al. 2002 108.542 -25.69 – -2.92 1.67 33.45

πŸ’‘ 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– 1.36 0.57 0.95 1096 -0.128 748 0.515 5.0
Li et al. 2025 1.35 0.57 – 1494 -0.152 – – –
Hu & Soubiran 2025 – – – – -0.190(5) – – –
Wei et al. 2025 1.37 0.31 – 912 0.500 621 0.43 –
Almeida et al. 2025 1.26 0.53 – 1622 – 648 – –
Hunt & Reffert 2024 – – – – – 1056(1) – –
Cavallo et al. 2024 1.31 0.64 – 1096 0.060 – – –
Hunt & Reffert 2023 1.24 0.24 0.95 1102 – – – –
Almeida et al. 2023 1.26 0.49 – 1600 -0.061 847(1) 0.60 –
Just et al. 2023 – – – 407 – 303 – –
Tarricq et al. 2022 1.33 – – 1445 – – – –
Jaehnig et al. 2021 1.27(1) – – – – – – –
Rain et al. 2021 1.28 0.56 – 1514 – – – 5
Dias et al. 2021 1.26 0.53 – 1622 -0.147 – – –
Cantat-Gaudin et al. 2020 1.37 0.35 – 1413 – – – –
Cantat-Gaudin & Anders 2020 1.28 – – – – – – –
Liu & Pang 2019 – – – 1180 0.250 – – –
Soubiran et al. 2018 1.28 – – – – – – –
Cantat-Gaudin et al. 2018 1.28 – – – – – – –
Loktin & Popova 2017 3.73 0.89 – 149 – – – –
Kharchenko et al. 2016 2.87 2.06 – 407 – – – –
Kharchenko et al. 2013 2.87 2.06 – 407 -0.109 – – –
Gozha et al. 2012 4.08 – – 134 -0.300 6918 – –
Piskunov et al. 2008 3.79 0.90 – 126 – – – –
van den Bergh 2006 4.08 0.96 – 135 – – – –
Kharchenko et al. 2005 3.79 0.90 – 126 – – – –
Kharchenko et al. 2003 4.17 0.96 – – – – – –
Chen et al. 2003 4.08 – – 130 – – – –
Dias et al. 2002 1.75 0.56 – 1514 -0.300 – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 2118 1.4 108.28 -24.76 0.77 -2.84 1.82 34.22 0.1

πŸ’‘ Note: The % column shows the percentage of members that Collinder 131 shares with each listed object.

Visualization
ℹ️
Collinder 131 UCC
Collinder 131 HUNT23
Collinder 131 CANTAT20
Galactocentric position diagram