Collinder 185

(MWSC 1481)

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0.82 UTI
0.74
CN
0.62
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 98
Core radius and density 1.7 [pc], 3.1 [pc-2]
C3 classification AB
  • CN 0.74 Moderately populated
  • Cdens 0.62 Moderately dense
  • CC3 0.75 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 185 is a moderately populated, moderately dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is very well-studied in the literature.

Palma et al. (2025)
Classified as optical pair (not dynamically associated) P86, along with CWNU_433.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.3355, e_all=0.0266.

Data
🔍 Search references for Collinder 185 in: SciX Simbad
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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 125.831 -36.365 0.644 -4.948 3.88 32.28
Li et al. 2025 125.833 -36.349 0.626 -4.924 3.879 –
Almeida et al. 2025 125.818 -36.346 – – – –
Hunt & Reffert 2024 125.827 -36.357 0.643 -4.939 3.873 28.179
Cavallo et al. 2024 125.911 -36.421 0.643 – – –
Hunt & Reffert 2023 125.827 -36.357 0.643 -4.939 3.873 28.179
Almeida et al. 2023 125.828 -36.368 – – – –
Just et al. 2023 125.83 -36.327 – – – –
Jaehnig et al. 2021 125.831 -36.349 0.65 -5.005 3.855 –
Rain et al. 2021 125.833 -36.349 0.626 -4.924 3.879 –
Richer et al. 2021 125.824 -36.34 0.532 -4.969 3.897 –
Dias et al. 2021 125.818 -36.346 0.63 -4.913 3.888 –
Cantat-Gaudin et al. 2020 125.833 -36.349 0.626 -4.924 3.879 –
Cantat-Gaudin & Anders 2020 125.833 -36.349 0.626 -4.924 3.879 –
Bossini et al. 2019 125.833 -36.349 – – – –
Soubiran et al. 2018 125.833 -36.349 – – – 75.78
Cantat-Gaudin et al. 2018 125.833 -36.349 0.626 -4.924 3.879 –
Dias et al. 2018 – – – -3.32 3.74 –
Dib et al. 2018 125.835 -36.33 – – – –
Sampedro et al. 2017 125.838 -36.333 – -3.18 1.69 –
Joshi et al. 2016 125.835 -36.33 – – – –
Kharchenko et al. 2016 125.83 -36.327 – – – –
Dias et al. 2014 125.838 -36.333 – -3.48 1.39 –
Kharchenko et al. 2013 125.835 -36.33 – -5.61 4.01 –
Bukowiecki et al. 2011 125.829 -36.374 – – – –
Piskunov et al. 2008 125.837 -36.327 – – – –
Ahumada & Lapasset 2007 125.825 -36.333 – – – –
van den Bergh 2006 125.825 -36.333 – – – –
Kharchenko et al. 2005 125.83 -36.33 – -6.53 2.83 –
Kharchenko et al. 2003 125.83 -36.37 – -6.84 2.91 –
Dias et al. 2002 125.838 -36.333 – -2.81 3.72 –
Lynga 1987 125.519 -36.152 – – – –

💡 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– 1.49 0.66 0.67 129 0.000 208 0.52 0
Li et al. 2025 1.33 0.51 – 250 -0.060 – – –
Almeida et al. 2025 1.42 0.65 – 104 – 170 – –
Hunt & Reffert 2024 1.46 0.53 0.67 106 – 372(1) – –
Cavallo et al. 2024 1.43 0.67 – 110 0.180 – – –
Hunt & Reffert 2023 1.46 0.53 0.67 106 – – – –
Almeida et al. 2023 1.44 0.76 – 109 -0.031 245(1) 0.52 –
Just et al. 2023 – – – 151 – 42 – –
Jaehnig et al. 2021 1.52(1) – – – – – – –
Rain et al. 2021 1.53 0.66 – 129 – – – 0
Richer et al. 2021 – 0.84 – – – – – –
Dias et al. 2021 1.42 0.65 – 104 0.103 – – –
Cantat-Gaudin et al. 2020 1.56 0.61 – 62 – – – –
Kounkel et al. 2020 1.50 0.79 – 85 – – – –
Cantat-Gaudin & Anders 2020 1.53 – – – – – – –
Bossini et al. 2019 1.57 0.69 – 50 0.000 – – –
Soubiran et al. 2018 1.53 – – – – – – –
Cantat-Gaudin et al. 2018 1.53 – – – – – – –
Dib et al. 2018 1.48 – – 151 – – – –
Joshi et al. 2016 1.48 0.79 – 151 – 145 – –
Kharchenko et al. 2016 1.48 0.79 – 151 – – – –
Kharchenko et al. 2013 1.48 0.79 – 151 – – – –
Bukowiecki et al. 2012 – – – – – 276 – –
Bukowiecki et al. 2011 1.48(1) 0.69 – 126 – – – –
Piskunov et al. 2008 1.49 0.66 – 151 – – – –
Ahumada & Lapasset 2007 – 0.66 – 129 – – – 1
van den Bergh 2006 1.49 0.66 – 129 – – – –
Kharchenko et al. 2005 1.49 0.66 – 151 – – – –
Kharchenko et al. 2003 1.49 0.66 – – – – – –
Dias et al. 2002 1.49 0.66 – 129 – – – –
Lynga 1987 1.50 0.63 – 79 – – – –

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

Visualization
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Collinder 185 UCC
Collinder 185 HUNT23
Collinder 185 CANTAT20
Galactocentric position diagram