UBC 225

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0.56 UTI
0.49
CN
0.58
Cdens
0.75
CC3
0.5
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 49
Radius (P>50% members) 4.9 [arcmin]
  • CN 0.49 Poorly populated
  • Cdens 0.58 Moderately dense
  • CC3 0.75 High 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 225 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is moderately studied in the literature.

Note: This object shares a significant 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: good fit. Isochrone match: good fit.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 225 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 – 106.646 -23.538 0.346 -2.463 4.43 59.235
Li et al. 2025 106.635 -23.534 0.324 -2.47 4.412 –
Almeida et al. 2025 106.654 -23.57 – – – –
Hunt & Reffert 2024 106.644 -23.501 0.349 -2.492 4.451 66.33
Cavallo et al. 2024 106.645 -23.519 0.346 – – –
Hunt & Reffert 2023 106.644 -23.501 0.349 -2.492 4.451 66.33
Dias et al. 2021 106.654 -23.57 0.324 -2.479 4.449 59.483
Cantat-Gaudin et al. 2020 106.635 -23.534 0.324 -2.47 4.412 –
Castro-Ginard et al. 2020 106.626 -23.554 0.317 -2.485 4.422 –

💡 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 2.66 0.42 – 821 -0.089 – – –
Almeida et al. 2025 2.80 0.58 – 685 – 191 – –
Hunt & Reffert 2024 – – – – – 164* – –
Cavallo et al. 2024 2.84 0.48 – 468 0.120 – – –
Hunt & Reffert 2023 2.58 0.16 0.89 1233 – – – –
Dias et al. 2021 2.80 0.58 – 685 -0.001 – – –
Cantat-Gaudin et al. 2020 2.77 0.44 – 676 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 3295 53.1 106.64 -23.53 0.35 -2.46 4.43 59.24 0.0

💡 Note: The % column shows the percentage of members that UBC 225 shares with each listed object.

Visualization
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UBC 225 UCC
UBC 225 HUNT23
UBC 225 CANTAT20
Galactocentric position diagram