UBC 56

(FoF 2230)

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0.79 UTI
0.79
CN
1.0
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 212
Radius (P>50% members) 15.4 [arcmin]
  • CN 0.79 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.7 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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UBC 56 is a rich, very dense object of 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 age and metallicity parameters (see Parameters). It is moderately studied in the literature.

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

Close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 56 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 – 69.867 47.542 1.137 1.502 -4.069 -4.489
Li et al. 2025 69.874 47.534 1.118 1.594 -4.008 –
Alfonso et al. 2024 69.832 47.498 1.084 1.529 -4.102 –
Zhang et al. 2024 69.868 47.564 – – – –
Hunt & Reffert 2024 69.868 47.564 1.135 1.51 -4.07 -5.254
Cavallo et al. 2024 69.829 47.504 1.134 – – –
Hunt & Reffert 2023 69.868 47.564 1.135 1.51 -4.07 -5.254
He et al. 2022 69.89 47.486 1.146 1.5 -4.073 –
Tarricq et al. 2022 69.86 47.534 1.159 1.506 -4.077 –
Cantat-Gaudin et al. 2020 69.874 47.534 1.118 1.594 -4.008 –
Cantat-Gaudin & Anders 2020 69.874 47.534 1.118 1.594 -4.008 –
Liu & Pang 2019 69.869 47.518 1.12 1.605 -4.022 –
Castro-Ginard et al. 2019 69.877 47.527 1.112 1.618 -4.007 –

💡 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 0.76 1.89 – 422 -0.136 – – –
Alfonso et al. 2024 0.89 1.59 – 402 -0.053 – – –
Zhang et al. 2024 – – – – -0.230* – – –
Hunt & Reffert 2024 – – – – – 675* – –
Cavallo et al. 2024 0.95 1.87 – 398 0.590 – – –
Hunt & Reffert 2023 0.83 1.99 1.77 274 – – – –
He et al. 2022 – 2.40 – 56 – – – –
Tarricq et al. 2022 0.87 – – 617 – – – –
Cantat-Gaudin et al. 2020 0.89 1.59 – 603 – – – –
Cantat-Gaudin & Anders 2020 0.87 – – – – – – –
Liu & Pang 2019 – – – 355 0.250 – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14173 36.3 69.86 47.54 1.15 1.5 -4.05 -2.74 0.0

💡 Note: The % column shows the percentage of members that UBC 56 shares with each listed object.

Visualization
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UBC 56 UCC
UBC 56 HUNT23
UBC 56 CANTAT20
Galactocentric position diagram