COIN-Gaia 23

(COIN 23)

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0.14 UTI
0.63
CN
1.0
Cdens
1.0
CC3
0.82
Clit
0.16
Cdup
C3 classification AA
Number of members (P>50%) 76
Radius (P>50% members) 9.9 [arcmin]
  • CN 0.63 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.82 Well-studied
  • Cdup 0.16 Likely duplicate
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
COIN-Gaia 23 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low 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 well-studied in the literature.

⚠ī¸ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Close Low extinction Near-solar metallicity Young

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 23 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 87.452 27.025 1.053 -0.328 -1.006 -0.012
Li et al. 2025 87.449 27.008 1.032 -0.318 -0.928 –
Almeida et al. 2025 87.483 27.02 – – – –
Alfonso et al. 2024 87.453 27.022 1.012 -0.329 -1.007 –
Zhang et al. 2024 87.43 27.013 – – – –
Hunt & Reffert 2024 87.43 27.013 1.06 -0.336 -0.997 -0.208
Cavallo et al. 2024 87.457 27.036 1.058 – – –
Hunt & Reffert 2023 87.43 27.013 1.06 -0.336 -0.997 -0.208
Almeida et al. 2023 87.496 27.067 – – – –
He et al. 2022 87.467 26.968 1.055 -0.332 -1.011 –
Tarricq et al. 2022 87.462 26.998 1.058 -0.32 -1.013 –
Dias et al. 2021 87.483 27.02 1.039 -0.327 -0.954 –
Cantat-Gaudin et al. 2020 87.449 27.008 1.032 -0.318 -0.928 –
Cantat-Gaudin & Anders 2020 87.449 27.008 1.032 -0.318 -0.928 –
Monteiro & Dias 2019 87.449 27.008 – – – 2.263
Cantat-Gaudin et al. 2019 87.449 27.008 1.03 -0.32 -0.96 –

💡 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 0.87 0.73 – 51 -0.153 – – –
Almeida et al. 2025 0.91 0.80 – 57 – 215 – –
Alfonso et al. 2024 0.94 0.54 – 62 -0.009 – – –
Zhang et al. 2024 – – – – -0.247* – – –
Hunt & Reffert 2024 – – – – – 277* – –
Cavallo et al. 2024 0.93 0.64 – 89 0.330 – – –
Hunt & Reffert 2023 0.91 0.46 0.75 67 – – – –
Almeida et al. 2023 0.91 0.74 – 213 -0.068 245* 0.58 –
He et al. 2022 – 0.80 – 79 – – – –
Tarricq et al. 2022 0.92 – – 138 – – – –
Dias et al. 2021 0.91 0.80 – 57 -0.009 – – –
Cantat-Gaudin et al. 2020 0.94 0.54 – 129 – – – –
Cantat-Gaudin & Anders 2020 0.94 – – – – – – –
Monteiro & Dias 2019 1.03 0.84 – 81 0.015 – – –
Cantat-Gaudin et al. 2019 0.94 – – – – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14154 85.5 87.46 27.02 1.06 -0.33 -1.0 -3.59 0.01
Majaess 65 84.2 87.45 27.04 1.04 -0.33 -1.01 -0.05 0.69
Alessi 135 34.2 87.41 27.04 1.05 -0.34 -1.03 -3.7 0.0

💡 Note: The % column shows the percentage of members that COIN-Gaia 23 shares with each listed object.

Visualization
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COIN-Gaia 23 UCC
COIN-Gaia 23 HUNT23
COIN-Gaia 23 CANTAT20
Galactocentric position diagram