COIN-Gaia 4

(COIN 4; FoF 720)

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0.74 UTI
0.75
CN
1.0
Cdens
0.75
CC3
0.6
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 106
Radius (P>50% members) 4.7 [arcmin]
  • CN 0.75 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.6 Moderately 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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COIN-Gaia 4 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is moderately studied in the literature.

Note: This object shares a large percentage of members with 3 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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 4 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 – 26.13 58.747 0.466 -0.969 -1.101 -56.305
Almeida et al. 2025 26.108 58.738 – – – –
Hunt & Reffert 2024 26.147 58.751 0.455 -0.951 -1.115 -31.507
Cavallo et al. 2024 26.111 58.744 0.463 – – –
Hunt & Reffert 2023 26.147 58.751 0.455 -0.951 -1.115 -31.507
Dias et al. 2021 26.108 58.738 0.458 -0.948 -1.028 –
Cantat-Gaudin et al. 2020 26.129 58.756 0.45 -0.948 -1.0 –
Cantat-Gaudin & Anders 2020 26.129 58.756 0.45 -0.948 -1.0 –
Liu & Pang 2019 26.241 58.716 0.45 -0.946 -1.051 –
Monteiro & Dias 2019 26.129 58.756 – – – 2.887
Cantat-Gaudin et al. 2019 26.129 58.756 0.45 -0.95 -1.04 –

💡 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] Bfr BSS
Almeida et al. 2025 1.85 1.77 – 173 – 254 – –
Hunt & Reffert 2024 – – – – – 719* – –
Cavallo et al. 2024 2.45 1.87 – 83 0.570 – – –
Hunt & Reffert 2023 1.95 1.52 1.89 188 – – – –
Dias et al. 2021 1.85 1.77 – 173 -0.104 – – –
Cantat-Gaudin et al. 2020 2.21 1.65 – 54 – – – –
Cantat-Gaudin & Anders 2020 2.09 – – – – – – –
Liu & Pang 2019 – – – 355 0.250 – – –
Monteiro & Dias 2019 2.63 1.46 – 118 0.043 – – –
Cantat-Gaudin et al. 2019 2.09 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 42 96.2 26.13 58.75 0.46 -0.96 -1.1 -56.31 0.03
CWWDL 594 71.7 26.13 58.75 0.48 -0.97 -1.1 -33.43 0.02
OC 0239 34.9 26.13 58.76 0.49 -0.97 -1.1 -33.43 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 4 shares with each listed object.

Visualization
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COIN-Gaia 4 UCC
COIN-Gaia 4 HUNT23
COIN-Gaia 4 CANTAT20
Galactocentric position diagram