Collinder 69

(MWSC 580; FoF 2381; OCSN 189)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 742
Radius (P>50% members) 45.9 [arcmin]
  • 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
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Collinder 69 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

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

Very close Low extinction Near-solar metallicity Very young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Collinder 69 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 83.815 9.745 2.495 1.134 -2.123 23.927
Li et al. 2025 83.792 9.813 2.462 1.194 -2.118 –
Wei et al. 2025 83.769 9.759 2.505 1.186 -2.13 –
Almeida et al. 2025 83.766 9.849 – – – –
Alfonso et al. 2024 83.801 9.813 2.456 1.186 -2.107 –
Zhang et al. 2024 83.814 9.888 – – – –
Hunt & Reffert 2024 83.814 9.888 2.504 1.215 -2.047 20.874
Celli et al. 2024 83.792 9.813 – – – –
Cavallo et al. 2024 83.906 9.924 2.505 – – –
Hunt & Reffert 2023 83.814 9.888 2.504 1.215 -2.047 20.874
Qin et al. 2023 83.87 9.82 2.5 1.25 -2.02 26.11
Just et al. 2023 83.827 9.83 – – – –
He et al. 2022 83.922 9.803 2.505 1.262 -2.128 –
Jaehnig et al. 2021 83.809 9.837 2.487 1.053 -2.077 –
Rain et al. 2021 83.792 9.813 2.462 1.194 -2.118 –
Dias et al. 2021 83.766 9.849 2.455 1.12 -2.158 27.403
Cantat-Gaudin et al. 2020 83.792 9.813 2.462 1.194 -2.118 –
Donor et al. 2020 83.835 9.83 – 0.94 -1.99 28.1
Cantat-Gaudin & Anders 2020 83.792 9.813 2.462 1.194 -2.118 –
Liu & Pang 2019 84.209 9.709 2.456 1.179 -2.182 –
Dias et al. 2019 83.792 9.813 2.462 1.194 -2.118 27.727
Soubiran et al. 2018 83.792 9.813 – – – 29.1
Cantat-Gaudin et al. 2018 83.792 9.813 2.462 1.194 -2.118 –
Loktin & Popova 2017 83.775 9.934 – 0.45 -2.4 31.4
Kharchenko et al. 2016 83.827 9.83 – – – –
Dias et al. 2014 83.775 9.933 – 0.28 -5.34 –
Kharchenko et al. 2013 83.835 9.83 – 0.87 -2.5 31.4
Gozha et al. 2012 83.775 9.933 – – – –
Piskunov et al. 2008 83.781 9.695 – – – –
Kharchenko et al. 2007 83.77 9.93 – 0.55 – 31.38
van den Bergh 2006 83.8 9.7 – – – –
Kharchenko et al. 2005 83.79 9.7 – 0.4 -1.93 31.38
Kharchenko et al. 2003 83.82 9.78 – 0.31 -1.41 –
Dias et al. 2002 83.775 9.933 – 0.45 -2.4 31.38

💡 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
Li et al. 2025 0.41 0.30 – 7 0.050 – – –
Wei et al. 2025 0.39 0.05 – 6 0.500 539 0.21 –
Almeida et al. 2025 0.40 0.37 – 9 – 649 – –
Alfonso et al. 2024 0.42 0.25 – 10 -0.005 – – –
Zhang et al. 2024 – – – – -0.086* – – –
Hunt & Reffert 2024 – – – – – 358* – –
Celli et al. 2024 – – – 13 – 564 – –
Cavallo et al. 2024 0.41 0.85 – 3 0.000 – – –
Hunt & Reffert 2023 0.38 0.42 1.75 5 – – – –
Qin et al. 2023 0.45 0.31 – 8 – – – –
Just et al. 2023 – – – 6 – 28 – –
He et al. 2022 – 0.20 – 6 – – – –
Jaehnig et al. 2021 0.40* – – – – – – –
Rain et al. 2021 0.40 0.37 – 5 – – – 0
Dias et al. 2021 0.40 0.37 – 9 -0.010 – – –
Cantat-Gaudin et al. 2020 0.42 0.25 – 13 – – – –
Donor et al. 2020 – – – – -0.120 – – –
Cantat-Gaudin & Anders 2020 0.40 – – – – – – –
Liu & Pang 2019 – – – 9 -0.500 – – –
Dias et al. 2019 0.40 0.31 – 9 -0.082 – – –
Soubiran et al. 2018 0.40 – – – – – – –
Cantat-Gaudin et al. 2018 0.40 – – – – – – –
Loktin & Popova 2017 0.43 0.32 – 11 – – – –
Kharchenko et al. 2016 0.41 0.28 – 6 – – – –
Kharchenko et al. 2013 0.41 0.28 – 6 – – – –
Gozha et al. 2012 0.40 – – 5 – 151 – –
Piskunov et al. 2008 0.44 0.28 – 6 – – – –
van den Bergh 2006 0.44 0.31 – 11 – – – –
Kharchenko et al. 2005 0.44 0.28 – 6 – – – –
Kharchenko et al. 2003 0.44 0.03 – – – – – –
Dias et al. 2002 0.40 0.37 – 5 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0324 3.2 85.37 9.25 2.48 1.6 -2.37 24.15 0.13

💡 Note: The % column shows the percentage of members that Collinder 69 shares with each listed object.

Visualization
ℹī¸
Collinder 69 UCC
Collinder 69 HUNT23
Collinder 69 CANTAT20
Galactocentric position diagram