UBC 533

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0.76 UTI
0.66
CN
1.0
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 81
Radius (P>50% members) 5.5 [arcmin]
  • CN 0.66 Moderately populated
  • 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 533 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above 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 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.

Relatively close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 533 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 – 230.308 -53.179 0.826 -1.751 -1.325 -15.368
Li et al. 2025 230.274 -53.179 0.791 -1.69 -1.345 –
Hu & Soubiran 2025 230.326 -53.187 – – – –
Almeida et al. 2025 230.31 -53.18 – – – –
Hunt & Reffert 2024 230.328 -53.172 0.815 -1.759 -1.298 -10.153
Cavallo et al. 2024 230.326 -53.187 0.819 – – –
Hunt & Reffert 2023 230.328 -53.172 0.815 -1.759 -1.298 -10.153
Almeida et al. 2023 230.315 -53.17 – – – –
He et al. 2022 230.327 -53.166 0.843 -1.757 -1.313 –
Dias et al. 2021 230.31 -53.18 0.796 -1.693 -1.344 –
Cantat-Gaudin et al. 2020 230.274 -53.179 0.791 -1.69 -1.345 –
Castro-Ginard et al. 2020 230.299 -53.175 0.795 -1.703 -1.334 –

💡 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 1.14 0.72 – 324 -0.048 – – –
Hu & Soubiran 2025 – – – – -0.260* – – –
Almeida et al. 2025 1.21 0.86 – 213 – 125 – –
Hunt & Reffert 2024 – – – – – 270* – –
Cavallo et al. 2024 1.34 0.59 – 501 0.500 – – –
Hunt & Reffert 2023 1.16 0.70 0.79 264 – – – –
Almeida et al. 2023 1.23 0.88 – 239 0.018 81* 0.43 –
He et al. 2022 – 0.90 – 89 – – – –
Tarricq et al. 2022 1.19 – – 93 – – – –
Dias et al. 2021 1.21 0.86 – 213 0.189 – – –
Cantat-Gaudin et al. 2020 1.22 0.75 – 89 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14227 45.7 230.32 -53.17 0.83 -1.75 -1.3 -11.54 0.0

💡 Note: The % column shows the percentage of members that UBC 533 shares with each listed object.

Visualization
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UBC 533 UCC
UBC 533 HUNT23
UBC 533 CANTAT20
Galactocentric position diagram