COIN-Gaia 19

(COIN 19)

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0.82 UTI
0.76
CN
1.0
Cdens
0.75
CC3
0.79
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 121
Radius (P>50% members) 9.3 [arcmin]
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.79 Well-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 19 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 low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is well-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 Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for COIN-Gaia 19 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 – 82.186 34.294 0.79 -1.524 -4.664 1.994
Li et al. 2025 82.188 34.29 0.774 -1.477 -4.641 –
Hu & Soubiran 2025 82.141 34.297 – – – –
Almeida et al. 2025 82.188 34.306 – – – –
Zhang et al. 2024 82.191 34.336 – – – –
Hunt & Reffert 2024 82.191 34.336 0.782 -1.448 -4.695 4.788
Cavallo et al. 2024 82.141 34.297 0.781 – – –
Hunt & Reffert 2023 82.191 34.336 0.782 -1.448 -4.695 4.788
Almeida et al. 2023 82.153 34.316 – – – –
Tarricq et al. 2022 82.21 34.265 0.803 -1.532 -4.671 –
Dias et al. 2021 82.188 34.306 0.773 -1.49 -4.635 –
Cantat-Gaudin et al. 2020 82.188 34.29 0.774 -1.477 -4.641 –
Cantat-Gaudin & Anders 2020 82.188 34.29 0.774 -1.477 -4.641 –
Monteiro & Dias 2019 82.188 34.29 – – – 2.468
Cantat-Gaudin et al. 2019 82.188 34.29 0.77 -1.48 -4.64 –

💡 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
Li et al. 2025 1.20 0.86 – 407 -0.037 – – –
Hu & Soubiran 2025 – – – – -0.240* – – –
Almeida et al. 2025 1.17 0.99 – 199 – 256 – –
Zhang et al. 2024 – – – – -0.057* – – –
Hunt & Reffert 2024 – – – – – 335* – –
Cavallo et al. 2024 1.26 0.80 – 631 0.160 – – –
Hunt & Reffert 2023 1.21 0.74 1.03 207 – – – –
Almeida et al. 2023 1.20 0.96 – 321 -0.037 261* 0.50 –
Tarricq et al. 2022 1.20 – – 112 – – – –
Dias et al. 2021 1.17 0.99 – 199 -0.018 – – –
Cantat-Gaudin et al. 2020 1.24 0.73 – 107 – – – –
Cantat-Gaudin & Anders 2020 1.24 – – – – – – –
Monteiro & Dias 2019 1.30 1.00 – 147 0.022 – – –
Cantat-Gaudin et al. 2019 1.25 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 65 97.5 82.19 34.3 0.79 -1.53 -4.67 4.93 0.01

💡 Note: The % column shows the percentage of members that COIN-Gaia 19 shares with each listed object.

Visualization
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COIN-Gaia 19 UCC
COIN-Gaia 19 HUNT23
COIN-Gaia 19 CANTAT20
Galactocentric position diagram