COIN-Gaia 15

(COIN 15)

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0.84 UTI
0.81
CN
1.0
Cdens
0.75
CC3
0.81
Clit
1.0
Cdup
N50 (P>50% members) 253
Stellar density (N50/rad) 25.9 [N/pc2]
C3 classification AB
  • CN 0.81 Rich
  • 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 15 is a rich, very dense object of high 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, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is well-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: intermediate fit. Isochrone match: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for COIN-Gaia 15 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– 76.107 35.815 0.819 0.299 -3.813 0.747
Li et al. 2025 76.09 35.831 0.824 0.44 -3.781 –
Almeida et al. 2025 76.078 35.827 – – – –
Zhang et al. 2024 76.103 35.801 – – – –
Hunt & Reffert 2024 76.103 35.801 0.824 0.289 -3.803 4.165
Cavallo et al. 2024 76.09 35.818 0.822 – – –
Hunt & Reffert 2023 76.103 35.801 0.824 0.289 -3.803 4.165
Almeida et al. 2023 76.105 35.823 – – – –
He et al. 2022 76.106 35.812 0.821 0.277 -3.829 –
Tarricq et al. 2022 76.129 35.835 0.829 0.325 -3.827 –
Rain et al. 2021 76.09 35.831 0.824 0.44 -3.781 –
Dias et al. 2021 76.078 35.827 0.837 0.429 -3.759 –
Cantat-Gaudin et al. 2020 76.09 35.831 0.824 0.44 -3.781 –
Cantat-Gaudin & Anders 2020 76.09 35.831 0.824 0.44 -3.781 –
Monteiro & Dias 2019 76.09 35.831 – – – 2.421
Cantat-Gaudin et al. 2019 76.09 35.831 0.82 0.44 -3.75 –

💡 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– 1.155 1.53 1.14 100 -0.010 402 0.59 0.0
Li et al. 2025 1.09 1.48 – 162 -0.133 – – –
Almeida et al. 2025 1.07 1.58 – 74 – 335 – –
Zhang et al. 2024 – – – – -0.114(1) – – –
Hunt & Reffert 2024 – – – – – 485(1) – –
Cavallo et al. 2024 1.21 1.63 – 100 0.180 – – –
Hunt & Reffert 2023 1.14 1.48 1.14 117 – – – –
Almeida et al. 2023 1.14 1.63 – 97 -0.012 402(1) 0.59 –
He et al. 2022 – 1.80 – 45 – – – –
Tarricq et al. 2022 1.14 – – 107 – – – –
Rain et al. 2021 1.17 1.46 – 162 – – – 0
Dias et al. 2021 1.07 1.58 – 74 -0.008 – – –
Cantat-Gaudin et al. 2020 1.17 1.27 – 100 – – – –
Cantat-Gaudin & Anders 2020 1.17 – – – – – – –
Monteiro & Dias 2019 1.43 1.48 – 166 0.028 – – –
Cantat-Gaudin et al. 2019 1.17 – – – – – – –

(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 62 97.2 76.11 35.81 0.82 0.29 -3.81 0.75 0.03
CWWDL 14371 20.6 76.1 35.82 0.83 0.27 -3.84 13.95 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 15 shares with each listed object.

Visualization
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COIN-Gaia 15 UCC
COIN-Gaia 15 HUNT23
COIN-Gaia 15 CANTAT20
Galactocentric position diagram