COIN-Gaia 30

(COIN 30; FoF 2359)

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0.88 UTI
0.77
CN
1.0
Cdens
1.0
CC3
0.81
Clit
1.0
Cdup
N50 (P>50% members) 142
Stellar density (N50/rad) 25.5 [N/pc2]
C3 classification AA
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.81 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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COIN-Gaia 30 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is 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.

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for COIN-Gaia 30 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– 21.106 70.574 1.368 -6.154 2.017 -21.472
Li et al. 2025 21.08 70.574 1.346 -6.145 2.067 –
Almeida et al. 2025 21.051 70.566 – – – –
Alfonso et al. 2024 21.117 70.568 1.339 -6.174 2.023 –
Hunt & Reffert 2024 21.171 70.575 1.371 -6.149 2.019 -19.698
Cavallo et al. 2024 21.033 70.567 1.371 – – –
Hunt & Reffert 2023 21.171 70.575 1.371 -6.149 2.019 -19.698
Almeida et al. 2023 21.031 70.57 – – – –
He et al. 2022 21.061 70.563 1.367 -6.18 2.014 –
Tarricq et al. 2022 20.996 70.577 1.373 -6.23 1.975 –
Dias et al. 2021 21.051 70.566 1.334 -6.156 2.097 -25.864
Cantat-Gaudin et al. 2020 21.08 70.574 1.346 -6.145 2.067 –
Cantat-Gaudin & Anders 2020 21.08 70.574 1.346 -6.145 2.067 –
Liu & Pang 2019 20.928 70.566 1.34 -6.187 2.037 –
Monteiro & Dias 2019 21.08 70.574 – – – 2.815
Cantat-Gaudin et al. 2019 21.08 70.574 1.35 -6.14 2.11 –

💡 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– 0.745 1.5 1.89 166 0.020 229 0.71 –
Li et al. 2025 0.86 1.64 – 41 0.226 – – –
Almeida et al. 2025 0.72 1.42 – 589 – 229 – –
Alfonso et al. 2024 0.77 1.25 – 224 0.008 – – –
Hunt & Reffert 2024 – – – – – 406(1) – –
Cavallo et al. 2024 0.78 1.85 – 68 0.020 – – –
Hunt & Reffert 2023 0.70 1.58 1.89 154 – – – –
Almeida et al. 2023 0.71 1.68 – 179 -0.072 211(1) 0.71 –
He et al. 2022 – 2.05 – 112 – – – –
Tarricq et al. 2022 0.76 – – 288 – – – –
Dias et al. 2021 0.72 1.42 – 589 0.008 – – –
Cantat-Gaudin et al. 2020 0.77 1.25 – 257 – – – –
Cantat-Gaudin & Anders 2020 0.73 – – – – – – –
Liu & Pang 2019 – – – 79 0.500 – – –
Monteiro & Dias 2019 0.80 1.40 – 154 0.026 – – –
Cantat-Gaudin et al. 2019 0.73 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 37 97.2 21.11 70.57 1.37 -6.16 2.02 -20.77 0.03

💡 Note: The % column shows the percentage of members that COIN-Gaia 30 shares with each listed object.

Visualization
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COIN-Gaia 30 UCC
COIN-Gaia 30 HUNT23
COIN-Gaia 30 CANTAT20
Galactocentric position diagram