Stock 23

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0.90 UTI
0.75
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 107
Radius (P>50% members) 22.1 [arcmin]
  • CN 0.75 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 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
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Stock 23 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, 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 small percentage of members with a later reported entry. See table with shared members information.

Close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Stock 23 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 – 49.072 60.257 1.631 -4.323 -1.004 -21.918
Li et al. 2025 49.075 60.377 1.613 -4.261 -0.865 –
Almeida et al. 2025 49.004 60.467 – – – –
Alfonso et al. 2024 49.076 60.347 1.601 -4.36 -1.008 –
Hunt & Reffert 2024 49.184 60.071 1.627 -4.324 -0.993 -34.774
Cavallo et al. 2024 49.036 60.371 1.635 – – –
Hunt & Reffert 2023 49.184 60.071 1.627 -4.324 -0.993 -34.774
Almeida et al. 2023 49.073 60.51 – – – –
He et al. 2022 49.222 60.142 1.637 -4.31 -1.005 –
Tarricq et al. 2022 49.142 60.114 1.641 -4.36 -1.008 –
Dias et al. 2021 49.004 60.467 1.609 -4.25 -0.874 -17.241
Cantat-Gaudin et al. 2020 49.075 60.377 1.613 -4.261 -0.865 –
Cantat-Gaudin & Anders 2020 49.075 60.377 1.613 -4.261 -0.865 –
Dias et al. 2019 49.046 60.116 1.62 -4.286 -0.921 -16.298
Bossini et al. 2019 49.075 60.377 – – – –
Soubiran et al. 2018 49.075 60.377 – – – -18.07
Cantat-Gaudin et al. 2018 49.075 60.377 1.613 -4.261 -0.865 –
Loktin & Popova 2017 49.05 60.117 – 0.41 -1.33 -16.8
Dias et al. 2014 49.046 60.116 – 0.41 -1.33 –
Gozha et al. 2012 49.046 60.116 – – – –
Piskunov et al. 2008 49.033 60.053 – – – –
Kharchenko et al. 2007 49.05 60.12 – 0.18 – -16.75
Kharchenko et al. 2005 49.05 60.05 – -1.34 -1.11 -16.75
Kharchenko et al. 2003 49.08 60.03 – 0.24 -1.97 –
Dias et al. 2002 49.046 60.116 – 0.41 -1.33 -8.53

💡 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 0.56 0.67 – 82 -0.048 – – –
Almeida et al. 2025 0.60 0.82 – 231 – 182 – –
Alfonso et al. 2024 0.63 0.61 – 214 0.054 – – –
Hunt & Reffert 2024 – – – – – 124* – –
Cavallo et al. 2024 0.64 1.07 – 44 0.330 – – –
Hunt & Reffert 2023 0.58 0.69 1.27 72 – – – –
Almeida et al. 2023 0.60 0.97 – 142 -0.053 301* 0.78 –
He et al. 2022 – 1.10 – 50 – – – –
Tarricq et al. 2022 0.61 – – 112 – – – –
Dias et al. 2021 0.60 0.82 – 231 0.054 – – –
Cantat-Gaudin et al. 2020 0.63 0.61 – 110 – – – –
Cantat-Gaudin & Anders 2020 0.61 – – – – – – –
Dias et al. 2019 0.73 1.02 – 44 0.680 – – –
Bossini et al. 2019 0.60 0.75 – 94 0.000 – – –
Soubiran et al. 2018 0.61 – – – – – – –
Cantat-Gaudin et al. 2018 0.61 – – – – – – –
Loktin & Popova 2017 0.73 0.81 – 32 – – – –
Gozha et al. 2012 1.00 – – 32 – 7 – –
Piskunov et al. 2008 0.38 0.81 – 32 – – – –
Kharchenko et al. 2005 0.38 0.81 – 32 – – – –
Kharchenko et al. 2003 1.00 0.93 – – – – – –
Dias et al. 2002 0.38 0.81 – 32 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0260 22.4 49.32 60.01 1.64 -4.26 -0.97 -21.65 0.01

💡 Note: The % column shows the percentage of members that Stock 23 shares with each listed object.

Visualization
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Stock 23 UCC
Stock 23 HUNT23
Stock 23 CANTAT20
Galactocentric position diagram