COIN-Gaia 1

(COIN 1)

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0.80 UTI
0.77
CN
1.0
Cdens
1.0
CC3
0.62
Clit
1.0
Cdup
N50 (P>50% members) 153
Stellar density (N50/rad) 13.0 [N/pc2]
C3 classification AA
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.62 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
COIN-Gaia 1 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 moderately studied in the literature.

Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.

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

Data
🔍 Search references for COIN-Gaia 1 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– 11.82 66.747 1.552 -5.04 -3.146 -14.34
Li et al. 2025 11.933 66.769 1.546 -5.034 -3.048 –
Almeida et al. 2025 11.999 66.782 – – – –
Alfonso et al. 2024 11.803 66.687 1.51 -5.006 -3.114 –
Almeida et al. 2023 11.975 66.786 – – – –
He et al. 2022 11.986 66.757 1.552 -5.023 -3.137 –
Dias et al. 2021 11.999 66.782 1.547 -5.021 -3.047 –
Cantat-Gaudin et al. 2020 11.933 66.769 1.546 -5.034 -3.048 –
Cantat-Gaudin & Anders 2020 11.933 66.769 1.546 -5.034 -3.048 –
Monteiro & Dias 2019 11.933 66.769 – – – 2.687
Cantat-Gaudin et al. 2019 11.933 66.769 1.55 -5.03 -3.04 –

💡 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– 0.64 1.5 – 224 0.035 234 0.58 –
Li et al. 2025 0.59 1.38 – 423 -0.031 – – –
Almeida et al. 2025 0.64 1.62 – 239 – 201 – –
Alfonso et al. 2024 0.66 1.13 – 224 0.035 – – –
Almeida et al. 2023 0.63 1.67 – 198 0.004 266(1) 0.58 –
He et al. 2022 – 1.80 – 112 – – – –
Tarricq et al. 2022 0.65 – – 200 – – – –
Dias et al. 2021 0.64 1.62 – 239 0.035 – – –
Cantat-Gaudin et al. 2020 0.66 1.13 – 182 – – – –
Cantat-Gaudin & Anders 2020 0.63 – – – – – – –
Monteiro & Dias 2019 0.67 1.29 – 543 0.036 – – –
Cantat-Gaudin et al. 2019 0.64 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
Steine 12 94.1 11.81 66.74 1.55 -5.04 -3.15 -13.82 0.02
UBC 34 83.7 11.8 66.75 1.55 -5.03 -3.14 -15.01 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 1 shares with each listed object.

Visualization
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COIN-Gaia 1 UCC
COIN-Gaia 1 CANTAT20
Galactocentric position diagram