UBC 423

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0.59 UTI
0.32
CN
1.0
Cdens
0.62
CC3
0.5
Clit
1.0
Cdup
C3 classification AC
Number of members (P>50%) 32
Radius (P>50% members) 2.7 [arcmin]
  • CN 0.32 Poorly populated
  • Cdens 1.0 Very dense
  • CC3 0.62 Intermediate quality
  • Clit 0.5 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 423 is a poorly populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (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 Very young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 423 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 – 48.273 58.929 0.386 0.571 -0.902 -42.543
Almeida et al. 2025 48.295 58.937 – – – –
Hunt & Reffert 2024 48.271 58.929 0.391 0.538 -0.873 –
Celli et al. 2024 48.257 58.927 – – – –
Cavallo et al. 2024 48.336 58.954 0.39 – – –
Hunt & Reffert 2023 48.271 58.929 0.391 0.538 -0.873 –
Dias et al. 2021 48.295 58.937 0.378 0.626 -0.779 –
Cantat-Gaudin et al. 2020 48.257 58.927 0.359 0.603 -0.835 –
Castro-Ginard et al. 2020 48.276 58.93 0.363 0.6 -0.823 –

💡 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 2.62 2.62 – 8 – 184 – –
Hunt & Reffert 2024 – – – – – 452* – –
Celli et al. 2024 – – – 17 – 207 – –
Cavallo et al. 2024 2.49 2.61 – 15 0.670 – – –
Hunt & Reffert 2023 2.39 2.58 1.36 12 – – – –
Dias et al. 2021 2.62 2.62 – 8 0.143 – – –
Cantat-Gaudin et al. 2020 2.52 2.64 – 17 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 2632 84.4 48.3 58.93 0.39 0.58 -0.89 -42.54 0.03

💡 Note: The % column shows the percentage of members that UBC 423 shares with each listed object.

Visualization
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UBC 423 UCC
UBC 423 HUNT23
UBC 423 CANTAT20
Galactocentric position diagram