COIN-Gaia 3

(COIN 3)

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0.76 UTI
0.76
CN
1.0
Cdens
0.75
CC3
0.65
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 125
Radius (P>50% members) 6.5 [arcmin]
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.65 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 3 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, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

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

Relatively close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for COIN-Gaia 3 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 – 18.734 60.504 0.797 -2.461 -1.885 -34.42
Almeida et al. 2025 18.745 60.501 – – – –
Hunt & Reffert 2024 18.727 60.507 0.794 -2.458 -1.887 -29.907
Cavallo et al. 2024 18.765 60.491 0.796 – – –
Hunt & Reffert 2023 18.727 60.507 0.794 -2.458 -1.887 -29.907
Almeida et al. 2023 18.722 60.48 – – – –
Tarricq et al. 2022 18.773 60.493 0.794 -2.463 -1.866 –
Dias et al. 2021 18.745 60.501 0.789 -2.44 -1.793 -40.543
Cantat-Gaudin et al. 2020 18.739 60.505 0.775 -2.431 -1.791 –
Cantat-Gaudin & Anders 2020 18.739 60.505 0.775 -2.431 -1.791 –
Monteiro & Dias 2019 18.739 60.505 – – – 2.938
Cantat-Gaudin et al. 2019 18.739 60.505 0.78 -2.43 -1.81 –

💡 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 1.10 1.92 – 99 – 365 – –
Hunt & Reffert 2024 – – – – – 510* – –
Cavallo et al. 2024 1.50 1.98 – 141 0.780 – – –
Hunt & Reffert 2023 1.21 2.19 2.58 91 – – – –
Almeida et al. 2023 1.15 1.97 – 105 0.251 350* 0.63 –
Tarricq et al. 2022 1.18 – – 59 – – – –
Dias et al. 2021 1.10 1.92 – 99 0.082 – – –
Cantat-Gaudin et al. 2020 1.21 1.69 – 49 – – – –
Cantat-Gaudin & Anders 2020 1.24 – – – – – – –
Monteiro & Dias 2019 1.11 1.51 – 38 0.033 – – –
Cantat-Gaudin et al. 2019 1.24 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 38 89.6 18.73 60.5 0.8 -2.46 -1.88 -29.04 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 3 shares with each listed object.

Visualization
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COIN-Gaia 3 UCC
COIN-Gaia 3 HUNT23
COIN-Gaia 3 CANTAT20
Galactocentric position diagram