COIN-Gaia 9

(COIN 9)

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0.79 UTI
0.6
CN
1.0
Cdens
0.75
CC3
0.81
Clit
1.0
Cdup
N50 (P>50% members) 70
Stellar density (N50/rad) 7.2 [N/pc2]
C3 classification AB
  • CN 0.6 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.75 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 9 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is well-studied in the literature.

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

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for COIN-Gaia 9 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– 47.716 48.025 1.15 -2.026 -2.866 -14.148
Li et al. 2025 47.748 48.023 1.119 -1.934 -2.81 –
Almeida et al. 2025 47.812 48.022 – – – –
Alfonso et al. 2024 48.196 47.805 1.094 -2.075 -3.047 –
Zhang et al. 2024 47.714 48.03 – – – –
Hunt & Reffert 2024 47.714 48.03 1.113 -2.035 -3.073 -14.035
Cavallo et al. 2024 49.166 47.486 1.113 – – –
Hunt & Reffert 2023 47.714 48.03 1.113 -2.035 -3.073 -14.035
Almeida et al. 2023 47.738 47.971 – – – –
He et al. 2022 47.734 48.038 1.159 -2.066 -2.907 –
Dias et al. 2021 47.812 48.022 1.138 -1.932 -2.792 -3.054
Cantat-Gaudin et al. 2020 47.748 48.023 1.119 -1.934 -2.81 –
Cantat-Gaudin & Anders 2020 47.748 48.023 1.119 -1.934 -2.81 –
Monteiro & Dias 2019 47.748 48.023 – – – 2.716
Cantat-Gaudin et al. 2019 47.748 48.023 1.12 -1.93 -2.79 –

💡 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– 0.855 1.19 1.33 118 0.000 162 0.48 –
Li et al. 2025 0.81 1.16 – 85 -0.031 – – –
Almeida et al. 2025 0.83 1.22 – 118 – 120 – –
Alfonso et al. 2024 0.86 0.57 – 217 0.054 – – –
Zhang et al. 2024 – – – – -0.092(1) – – –
Hunt & Reffert 2024 – – – – – 227(1) – –
Cavallo et al. 2024 0.94 1.29 – 78 -0.010 – – –
Hunt & Reffert 2023 0.85 0.93 1.33 150 – – – –
Almeida et al. 2023 0.85 1.22 – 188 0.000 162(1) 0.48 –
He et al. 2022 – 1.30 – 63 – – – –
Tarricq et al. 2022 0.84 – – 166 – – – –
Dias et al. 2021 0.83 1.22 – 118 0.053 – – –
Cantat-Gaudin et al. 2020 0.86 0.57 – 158 – – – –
Cantat-Gaudin & Anders 2020 0.87 – – – – – – –
Monteiro & Dias 2019 0.98 1.11 – 70 0.022 – – –
Cantat-Gaudin et al. 2019 0.87 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14316 68.6 47.71 48.03 1.16 -2.05 -2.89 -14.15 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 9 shares with each listed object.

Visualization
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COIN-Gaia 9 UCC
COIN-Gaia 9 HUNT23
COIN-Gaia 9 CANTAT20
Galactocentric position diagram