Collinder 107

(MWSC 943)

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0.43 UTI
0.0
CN
0.02
Cdens
0.12
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 22
Core radius and density 7.4 [pc], 0.1 [pc-2]
C3 classification DC
  • CN 0.0 Sparse
  • Cdens 0.02 Very loose
  • CC3 0.12 Very low 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 107 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate 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 significant percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

Li et al. (2026)
Tidal & Core radii: r_t=44+/-52.0 [pc], r_c=0.43+/-0.0 [pc]; stars within r_t: N~227

Liu et al. (2025)
Classified as primordial binary cluster 125 along with HSC_1629, and of multiple system 42 along with NGC_2244, Collinder_106 and HSC_1629.

Palma et al. (2025)
Part of multiple system G20, along with HSC_1629, Desvoivres_2, NGC_2244 and Collinder_106.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.97 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.97 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.3395, e_all=0.1791.

Piecka & Paunzen (2021)
Belongs to cluster aggregate 'Agg19' along with Collinder 106 and NGC 2244.

Data
🔍 Search references for Collinder 107 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 99.255 4.904 0.614 -1.361 0.654 –
Li et al. 2026 99.1 5.02 – – – –
Liu et al. 2025 99.62 4.64 0.65 -2.43 -0.2 7.28
Schweers & McSwain 2026 99.17 4.98 – – – –
Yang et al. 2025 99.622 4.635 – – – –
Almeida et al. 2025 99.231 4.972 – – – –
Zhang et al. 2024 99.622 4.635 – – – –
Hunt & Reffert 2024 99.622 4.635 0.649 -2.43 -0.202 7.284
Celli et al. 2024 99.203 4.972 – – – –
Cavallo et al. 2024 99.576 4.402 0.655 – – –
He et al. 2023 99.612 4.565 0.657 -2.401 -0.177 8.14
Hunt & Reffert 2023 99.622 4.635 0.649 -2.43 -0.202 7.284
Just et al. 2023 99.618 4.637 – – – –
Fu et al. 2022 99.203 4.972 – – – 27.9
Dias et al. 2021 99.231 4.972 0.617 -1.316 0.652 –
Cantat-Gaudin et al. 2020 99.203 4.972 0.617 -1.325 0.659 –
Zhong et al. 2020 99.203 4.972 – -1.325 0.659 35.349
Cantat-Gaudin & Anders 2020 99.203 4.972 0.617 -1.325 0.659 –
Dias et al. 2019 99.204 4.972 0.617 -1.325 0.659 131.6
Soubiran et al. 2018 99.203 4.972 – – – 11.01
Cantat-Gaudin et al. 2018 99.203 4.972 0.617 -1.325 0.659 –
Dias et al. 2018 – – – -1.25 -1.48 –
Dib et al. 2018 99.625 4.635 – – – –
Sampedro et al. 2017 99.425 4.733 – 0.94 -1.9 –
Joshi et al. 2016 99.625 4.635 – – – –
Dias et al. 2016 99.425 4.733 – 0.37 -1.29 12.31
Kharchenko et al. 2016 99.618 4.637 – – – –
Dias et al. 2014 99.425 4.733 – 0.37 -1.29 –
Kharchenko et al. 2013 99.625 4.635 – -2.5 -0.26 21.6
Gozha et al. 2012 99.425 4.733 – – – –
Kharchenko et al. 2009 99.625 4.627 – – – –
Piskunov et al. 2008 99.625 4.627 – – – –
Kharchenko et al. 2007 99.42 4.73 – 0.15 – 17.73
van den Bergh 2006 99.625 4.633 – – – –
Kharchenko et al. 2005 99.63 4.63 – -2.58 -0.75 17.73
Dias et al. 2002 99.425 4.733 – – – –
Lynga 1987 99.4 4.736 – – – –
Alter et al. 1970 99.4 4.736 – – – –

💡 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– 1.48 1.31 2.35 15 -0.140 200 – –
Liu et al. 2025 2.14 0.41 – 17 – – – –
Schweers & McSwain 2026 1.48 – – 25 – – – –
Yang et al. 2025 – – – 15 -0.140(3) – – –
Almeida et al. 2025 1.47 1.47 – 15 – 727 – –
Zhang et al. 2024 – – – – 0.072(1) – – –
Hunt & Reffert 2024 1.40 1.35 2.35 15 – 302(1) – –
Celli et al. 2024 – – – 18 – 579 – –
Cavallo et al. 2024 1.43 1.29 – 12 0.260 – – –
He et al. 2023 1.58 1.60 – 8 – – – –
Hunt & Reffert 2023 1.40 1.35 2.35 15 – – – –
Just et al. 2023 – – – 15 – 72 – –
Fu et al. 2022 – – – – -0.280 – – –
Dias et al. 2021 1.47 1.47 – 15 -0.100 – – –
Cantat-Gaudin et al. 2020 1.67 0.95 – 18 – – – –
Kounkel et al. 2020 1.56 1.57 – 26 – – – –
Zhong et al. 2020 1.55(1) 1.31 – 7165 -0.274 – – –
Cantat-Gaudin & Anders 2020 1.55 – – – – – – –
Dias et al. 2019 1.33 1.29 – 14 -0.580 – – –
Soubiran et al. 2018 1.55 – – – – – – –
Cantat-Gaudin et al. 2018 1.55 – – – – – – –
Dib et al. 2018 1.45 – – 15 – – – –
Joshi et al. 2016 1.45 1.31 – 15 – 98 – –
Dias et al. 2016 1.74 1.70 – 10 – – – –
Kharchenko et al. 2016 1.45 1.31 – 15 – – – –
Kharchenko et al. 2013 1.45 1.31 – 15 – – – –
Gozha et al. 2012 1.74 – – 10 – 98 – –
Kharchenko et al. 2009 1.45 1.26 – 11 – – – –
Piskunov et al. 2008 1.45 1.26 – 11 – – – –
van den Bergh 2006 1.74 1.70 – 10 – – – –
Kharchenko et al. 2005 1.45 1.26 – 11 – – – –
Dias et al. 2002 1.74 1.70 – 10 – – – –
Lynga 1987 1.70 1.51 – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
Collinder 104 60.0 99.19 4.79 0.61 -1.42 0.6 36.18 0.57
CWWDL 14136 40.0 99.16 4.85 0.64 -1.43 0.63 – 0.02

💡 Note: The % column shows the percentage of members that Collinder 107 shares with each listed object.

Visualization
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Collinder 107 UCC
Collinder 107 HUNT23
Collinder 107 CANTAT20
Galactocentric position diagram