COIN-Gaia 11

(COIN 11; UBC 60)

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0.81 UTI
0.77
CN
1.0
Cdens
1.0
CC3
0.64
Clit
1.0
Cdup
N50 (P>50% members) 142
Stellar density (N50/rad) 11.4 [N/pc2]
C3 classification AA
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.64 Moderately 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 11 is a rich, very dense object of very high C3 quality. Its parallax locates it at a 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 moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Palma et al. (2025)
Part of multiple system G18, along with HSC_1268 and HSC_1291.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data
🔍 Search references for COIN-Gaia 11 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– 68.101 39.493 1.518 3.492 -5.72 -6.237
Bijavara Seshashayana et al. 2025 68.068 39.515 – – – –
Li et al. 2025 68.11 39.479 1.485 3.574 -5.62 –
Almeida et al. 2025 68.08 39.484 – – – –
Alfonso et al. 2024 68.113 39.515 1.468 3.45 -5.722 –
Zhang et al. 2024 68.15 39.533 – – – –
Hunt & Reffert 2024 68.15 39.533 1.517 3.437 -5.748 -4.943
Cavallo et al. 2024 68.111 39.569 1.517 – – –
Hunt & Reffert 2023 68.15 39.533 1.517 3.437 -5.748 -4.943
Almeida et al. 2023 68.058 39.516 – – – –
He et al. 2022 68.124 39.52 1.516 3.458 -5.734 –
Tarricq et al. 2022 68.11 39.503 1.492 3.459 -5.748 –
Jadhav & Subramaniam 2021 68.11 39.479 – – – –
Dias et al. 2021 68.08 39.484 1.489 3.58 -5.628 0.162
Cantat-Gaudin et al. 2020 68.11 39.479 1.485 3.574 -5.62 –
Cantat-Gaudin & Anders 2020 68.11 39.479 1.485 3.574 -5.62 –
Castro-Ginard et al. 2019 68.134 39.497 1.469 3.619 -5.734 –
Monteiro & Dias 2019 68.11 39.479 – – – 2.729
Cantat-Gaudin et al. 2019 68.11 39.479 1.49 3.57 -5.63 –

💡 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– 0.66 1.57 2.08 661 0.053 296 0.69 1
Bijavara Seshashayana et al. 2025 – 1.25 – 790 0.130(14) – – –
Li et al. 2025 0.65 1.52 – 752 0.150 – – –
Almeida et al. 2025 0.64 1.77 – 627 – 234 – –
Alfonso et al. 2024 0.67 1.25 – 795 0.047 – – –
Zhang et al. 2024 – – – – 0.059(1) – – –
Hunt & Reffert 2024 – – – – – 287(1) – –
Cavallo et al. 2024 0.66 1.89 – 490 0.300 – – –
Hunt & Reffert 2023 0.62 1.77 2.08 339 – – – –
Almeida et al. 2023 0.64 1.88 – 566 -0.001 332(1) 0.69 –
He et al. 2022 – 2.15 – 355 – – – –
Tarricq et al. 2022 0.67 – – 794 – – – –
Jadhav & Subramaniam 2021 0.67 1.25 – 794 – 304 – 1(1)
Dias et al. 2021 0.64 1.77 – 627 0.047 – – –
Cantat-Gaudin et al. 2020 0.67 1.25 – 794 – – – –
Kounkel et al. 2020 0.69 1.57 – 603 – – – –
Cantat-Gaudin & Anders 2020 0.66 – – – – – – –
Monteiro & Dias 2019 0.64 1.31 – 695 0.023 – – –
Cantat-Gaudin et al. 2019 0.66 – – – – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization
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COIN-Gaia 11 UCC
COIN-Gaia 11 HUNT23
COIN-Gaia 11 CANTAT20
Galactocentric position diagram