UBC 175

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0.80 UTI
0.77
CN
1.0
Cdens
0.75
CC3
0.75
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 149
Radius (P>50% members) 12.1 [arcmin]
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.75 Well-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 175 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, below 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 metallicity parameter (see Parameters). It is well-studied in the literature.
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 175 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 – 344.432 54.385 0.739 1.451 -0.789 -30.0
Li et al. 2025 344.451 54.401 0.721 1.432 -0.726 –
Hu & Soubiran 2025 344.476 54.354 – – – –
Wei et al. 2025 344.354 54.383 0.743 1.475 -0.744 –
Almeida et al. 2025 344.43 54.378 – – – –
Zhang et al. 2024 344.489 54.434 – – – –
Hunt & Reffert 2024 344.489 54.434 0.738 1.466 -0.801 -29.312
Cavallo et al. 2024 344.476 54.354 0.737 – – –
Hunt & Reffert 2023 344.489 54.434 0.738 1.466 -0.801 -29.312
Almeida et al. 2023 344.432 54.375 – – – –
Tarricq et al. 2022 344.443 54.42 0.735 1.46 -0.793 –
Dias et al. 2021 344.43 54.378 0.728 1.418 -0.725 –
Cantat-Gaudin et al. 2020 344.451 54.401 0.721 1.432 -0.726 –
Castro-Ginard et al. 2020 344.448 54.387 0.722 1.435 -0.726 –

💡 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 1.22 0.66 – 738 0.061 – – –
Hu & Soubiran 2025 – – – – -0.030* – – –
Wei et al. 2025 1.69 0.91 – 576 0.250 688 0.80 –
Almeida et al. 2025 1.32 1.07 – 445 – 245 – –
Zhang et al. 2024 – – – – -0.017* – – –
Hunt & Reffert 2024 – – – – – 359* – –
Cavallo et al. 2024 1.39 0.81 – 537 0.490 – – –
Hunt & Reffert 2023 1.29 0.80 0.53 359 – – – –
Almeida et al. 2023 1.27 1.08 – 452 -0.016 299* 0.59 –
Tarricq et al. 2022 1.30 – – 513 – – – –
Dias et al. 2021 1.32 1.07 – 445 0.195 – – –
Cantat-Gaudin et al. 2020 1.34 0.88 – 468 – – – –

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

Visualization
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UBC 175 UCC
UBC 175 HUNT23
UBC 175 CANTAT20
Galactocentric position diagram