Collinder 220

(NGC 3247; MWSC 1803; Cr220; OCL 809; ESO 127 19; FoF 1013)

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0.96 UTI
0.78
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 186
Stellar density (N50/rad) 14.5 [N/pc2]
C3 classification AA
  • CN 0.78 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 220 is a rich, very dense object of very 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, 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.

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Collinder 220 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 156.42 -57.923 0.39 -7.35 2.691 -12.567
Li et al. 2025 156.429 -57.922 0.364 -7.339 2.677 –
Almeida et al. 2025 156.432 -57.927 – – – –
Hunt & Reffert 2024 156.423 -57.923 0.393 -7.348 2.705 -17.936
Cavallo et al. 2024 156.429 -57.924 0.394 – – –
Hunt & Reffert 2023 156.423 -57.923 0.393 -7.348 2.705 -17.936
Just et al. 2023 156.459 -57.911 – – – –
Jaehnig et al. 2021 156.703 -57.929 0.319 -6.498 3.012 –
Dias et al. 2021 156.432 -57.927 0.361 -7.351 2.684 –
Cantat-Gaudin et al. 2020 156.429 -57.922 0.364 -7.339 2.677 –
SΓ‘nchez et al. 2020 156.467 -57.927 – -7.307 2.704 –
Donor et al. 2020 156.465 -57.915 – -7.33 2.68 -12.5
Cantat-Gaudin & Anders 2020 156.429 -57.922 0.364 -7.339 2.677 –
Liu & Pang 2019 156.444 -57.913 0.351 -7.173 2.973 –
Soubiran et al. 2018 156.429 -57.922 – – – -12.19
Bica et al. 2019 156.467 -57.913 – – – –
Cantat-Gaudin et al. 2018 156.429 -57.922 0.364 -7.339 2.677 –
Loktin & Popova 2017 156.465 -57.927 – -6.947 -0.633 -13.0
Kharchenko et al. 2016 156.459 -57.911 – – – –
Dias et al. 2014 156.467 -57.927 – -3.57 1.89 –
Kharchenko et al. 2013 156.465 -57.915 – -5.94 2.51 -13.0
Gozha et al. 2012 156.467 -57.927 – – – –
van den Bergh 2006 156.072 -57.76 – – – –
Dias et al. 2002 156.467 -57.927 – -3.57 1.89 -13.0

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– 2.23 0.72 1.43 180 -0.016 640 – –
Li et al. 2025 2.28 0.86 – 240 -0.072 – – –
Almeida et al. 2025 2.23 1.09 – 156 – 640 – –
Hunt & Reffert 2024 – – – – – 984(1) – –
Cavallo et al. 2024 2.17 0.81 – 302 0.090 – – –
Hunt & Reffert 2023 2.32 0.82 1.43 205 – – – –
Just et al. 2023 – – – 372 – 116 – –
Jaehnig et al. 2021 2.99(1) – – – – – – –
Dias et al. 2021 2.23 1.09 – 156 -0.016 – – –
Cantat-Gaudin et al. 2020 2.45 0.72 – 234 – – – –
Donor et al. 2020 – – – – -0.080 – – –
Cantat-Gaudin & Anders 2020 2.54 – – – – – – –
Liu & Pang 2019 – – – 63 0.500 – – –
Soubiran et al. 2018 2.54 – – – – – – –
Cantat-Gaudin et al. 2018 2.54 – – – – – – –
Loktin & Popova 2017 1.59 0.70 – 123 – – – –
Kharchenko et al. 2016 1.47 0.69 – 372 – – – –
Kharchenko et al. 2013 1.47 0.69 – 372 – – – –
Gozha et al. 2012 1.55 – – 121 – – – –
van den Bergh 2006 1.55 0.68 – 120 – – – –
Dias et al. 2002 1.55 0.69 – 121 – – – –

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

Visualization
ℹ️
Collinder 220 UCC
Collinder 220 HUNT23
Collinder 220 CANTAT20
Galactocentric position diagram