Collinder 106

(MWSC 936)

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0.85 UTI
0.82
CN
1.0
Cdens
0.62
CC3
0.9
Clit
1.0
Cdup
Nm (P>50%) 274
Core radius and density 1.0 [pc], 14 [pc-2]
C3 classification AC
  • CN 0.82 Rich
  • Cdens 1.0 Very dense
  • CC3 0.62 Intermediate quality
  • Clit 0.9 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 106 is a rich, very dense object of intermediate 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, very young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.

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

Liu et al. (2025)
Classified as primordial binary cluster 124 along with HSC_1629, and of multiple system 42 along with NGC_2244, Collinder_107 and HSC_1629.

Palma et al. (2025)
Part of multiple system G20, along with HSC_1629, Desvoivres_2, NGC_2244 and Collinder_107.

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

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=0.25, e_all=0.2594.

Piecka & Paunzen (2021)
Belongs to cluster aggregate 'Agg19' along with Collinder 107 and NGC 2244.

Data
🔍 Search references for Collinder 106 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– 99.29 6.037 0.653 -1.584 0.521 26.713
Liu et al. 2025 99.3 6.05 0.67 -1.62 0.52 25.92
Li et al. 2025 99.278 6.002 0.635 -1.472 0.531 –
Yang et al. 2025 99.295 6.05 – – – –
Almeida et al. 2025 99.202 5.931 – – – –
Zhang et al. 2024 99.295 6.05 – – – –
Hunt & Reffert 2024 99.295 6.05 0.666 -1.623 0.524 25.925
Celli et al. 2024 99.278 6.002 – – – –
Cavallo et al. 2024 99.286 6.031 0.661 – – –
Hunt & Reffert 2023 99.295 6.05 0.666 -1.623 0.524 25.925
Just et al. 2023 99.3 6.071 – – – –
Dias et al. 2021 99.202 5.931 0.633 -1.48 0.52 –
Cantat-Gaudin et al. 2020 99.278 6.002 0.635 -1.472 0.531 –
Zhong et al. 2020 99.278 6.002 – -1.472 0.531 30.317
Cantat-Gaudin & Anders 2020 99.278 6.002 0.635 -1.472 0.531 –
Cantat-Gaudin et al. 2018 99.278 6.002 0.635 -1.472 0.531 –
Dib et al. 2018 99.307 6.07 – – – –
Loktin & Popova 2017 99.3 6.07 – -0.898 -0.581 28.7
Sampedro et al. 2017 99.275 5.95 – 1.3 -1.07 –
Joshi et al. 2016 99.307 6.07 – – – –
Kharchenko et al. 2016 99.3 6.071 – – – –
Dias et al. 2014 99.275 5.95 – 0.75 -1.11 –
Kharchenko et al. 2013 99.307 6.07 – -2.0 0.5 28.7
Gozha et al. 2012 99.275 5.95 – – – –
Piskunov et al. 2008 99.334 5.951 – – – –
Kharchenko et al. 2007 99.27 5.95 – 0.52 – 28.72
Kharchenko et al. 2005 99.34 5.95 – -1.98 1.47 28.72
Kharchenko et al. 2003 99.33 5.98 – -1.17 1.82 –
Dias et al. 2002 99.275 5.95 – 0.75 -1.11 35.66
Lynga 1987 99.32 5.956 – – – –

💡 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– 1.51 0.76 1.39 10 -0.062 596 – –
Liu et al. 2025 1.98 0.28 – 13 – – – –
Li et al. 2025 1.39 0.70 – 17 0.122 – – –
Yang et al. 2025 – – – 10 -0.210(3) – – –
Almeida et al. 2025 1.35 0.95 – 16 – 426 – –
Zhang et al. 2024 – – – – 0.041(1) – – –
Hunt & Reffert 2024 1.41 0.77 1.39 10 – 342(1) – –
Celli et al. 2024 – – – 24 – 455 – –
Cavallo et al. 2024 1.47 0.76 – 9 0.170 – – –
Hunt & Reffert 2023 1.41 0.77 1.39 10 – – – –
Just et al. 2023 – – – 3 – 736 – –
Dias et al. 2021 1.35 0.95 – 16 -0.062 – – –
Cantat-Gaudin et al. 2020 1.51 0.63 – 25 – – – –
Kounkel et al. 2020 1.64 0.91 – 10 – – – –
Zhong et al. 2020 1.51(1) – – – -0.329 – – –
Cantat-Gaudin & Anders 2020 1.51 – – – – – – –
Cantat-Gaudin et al. 2018 1.51 – – – – – – –
Dib et al. 2018 1.58 – – 3 – – – –
Loktin & Popova 2017 0.63 0.42 – 7 – – – –
Joshi et al. 2016 1.58 0.98 – 3 – 10965 – –
Kharchenko et al. 2016 1.58 0.98 – 3 – – – –
Kharchenko et al. 2013 1.58 0.98 – 3 – – – –
Gozha et al. 2012 0.77 – – 7943 – 10965 – –
Piskunov et al. 2008 1.60 0.73 – 5 – – – –
Kharchenko et al. 2005 1.60 0.73 – 5 – – – –
Kharchenko et al. 2003 0.77 0.63 – – – – – –
Dias et al. 2002 1.00 0.38 – 7943 -0.260 – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
FSR 1008 89.8 99.3 6.04 0.65 -1.59 0.52 26.84 0.11

💡 Note: The % column shows the percentage of members that Collinder 106 shares with each listed object.

Visualization
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Collinder 106 UCC
Collinder 106 HUNT23
Collinder 106 CANTAT20
Galactocentric position diagram