Collinder 237

(VDBH 108; NGC 3496; MWSC 1878; OCL 836; vdBergh-Hagen 108; ESO 128 26; FSR 1562; FoF 236)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 551
Stellar density (N50/rad) 57.3 [N/pc2]
C3 classification AA
  • CN 1.0 Very 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 237 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (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: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 237 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 164.871 -60.335 0.403 -7.411 2.716 8.816
Li et al. 2025 164.877 -60.335 0.391 -7.408 2.668 –
Carrasco-Varela et al. 2025 165.012 -60.451 – – – –
Almeida et al. 2025 164.881 -60.336 – – – –
Hunt & Reffert 2024 164.877 -60.332 0.406 -7.414 2.722 8.026
Cavallo et al. 2024 164.876 -60.339 0.405 – – –
Hunt & Reffert 2023 164.877 -60.332 0.406 -7.414 2.722 8.026
Almeida et al. 2023 164.873 -60.336 – – – –
Just et al. 2023 164.896 -60.337 – – – –
Jaehnig et al. 2021 164.878 -60.334 0.423 -7.406 2.688 –
Rain et al. 2021 164.877 -60.335 0.391 -7.408 2.668 –
Dias et al. 2021 164.881 -60.336 0.392 -7.402 2.671 9.611
Cantat-Gaudin et al. 2020 164.877 -60.335 0.391 -7.408 2.668 –
SΓ‘nchez et al. 2020 164.9 -60.337 – -7.391 2.72 –
Cantat-Gaudin & Anders 2020 164.877 -60.335 0.391 -7.408 2.668 –
Liu & Pang 2019 164.869 -60.325 0.389 -7.305 2.644 –
Bossini et al. 2019 164.877 -60.335 – – – –
Soubiran et al. 2018 164.877 -60.335 – – – 9.62
Bica et al. 2019 164.911 -60.338 – – – –
Cantat-Gaudin et al. 2018 164.877 -60.335 0.391 -7.408 2.668 –
Loktin & Popova 2017 164.895 -60.336 – -3.61 -1.14 -6.3
Kharchenko et al. 2016 164.896 -60.337 – – – –
Dias et al. 2014 164.9 -60.337 – -3.61 -1.14 –
Kharchenko et al. 2013 164.902 -60.34 – -7.62 4.17 -6.3
Gozha et al. 2012 164.9 -60.337 – – – –
Piskunov et al. 2008 164.887 -60.387 – – – –
Kharchenko et al. 2007 164.89 -60.34 – 0.15 – -51.4
van den Bergh 2006 164.9 -60.383 – – – –
Kharchenko et al. 2005 164.89 -60.39 – -7.3 2.08 -51.4
Kharchenko et al. 2003 165.12 -60.32 – -8.35 1.95 –
Dias et al. 2002 164.9 -60.337 – -3.61 -1.14 -51.4

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– 2.05 1.455 1.46 472 0.130 1785 0.63 0.02
Li et al. 2025 2.23 1.34 – 653 0.259 – – –
Carrasco-Varela et al. 2025 2.05 1.62 – 564 0.050 – – 0.02(1)
Almeida et al. 2025 2.05 1.62 – 564 – 1785 – –
Hunt & Reffert 2024 – – – – – 4506(1) – –
Cavallo et al. 2024 2.23 1.75 – 417 0.280 – – –
Hunt & Reffert 2023 2.26 1.45 1.46 352 – – – –
Almeida et al. 2023 2.16 1.55 – 542 0.153 2044(1) 0.63 –
Just et al. 2023 – – – 785 – 143 – –
Jaehnig et al. 2021 2.34(1) – – – – – – –
Rain et al. 2021 2.38 1.43 – 295 – – – 0
Dias et al. 2021 2.05 1.62 – 564 0.130 – – –
Cantat-Gaudin et al. 2020 2.31 1.27 – 501 – – – –
Cantat-Gaudin & Anders 2020 2.38 – – – – – – –
Liu & Pang 2019 – – – 1410 -0.500 – – –
Bossini et al. 2019 2.48 1.45 – 443 0.000 – – –
Soubiran et al. 2018 2.38 – – – – – – –
Cantat-Gaudin et al. 2018 2.38 – – – – – – –
Loktin & Popova 2017 0.99 1.45 – 296 – – – –
Kharchenko et al. 2016 1.36 1.29 – 785 – – – –
Kharchenko et al. 2013 1.36 1.29 – 785 – – – –
Gozha et al. 2012 0.99 – – 296 – 200 – –
Piskunov et al. 2008 0.99 1.46 – 417 – – – –
van den Bergh 2006 0.99 1.46 – 295 – – – –
Kharchenko et al. 2005 0.99 1.46 – 417 – – – –
Kharchenko et al. 2003 0.99 1.46 – – – – – –
Dias et al. 2002 0.99 1.45 – 296 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0553 2.9 164.89 -60.32 0.46 -7.31 2.71 8.63 0.06

πŸ’‘ Note: The % column shows the percentage of members that Collinder 237 shares with each listed object.

Visualization
ℹ️
Collinder 237 UCC
Collinder 237 HUNT23
Collinder 237 CANTAT20
Galactocentric position diagram