UBC 51

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0.78 UTI
0.76
CN
1.0
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 123
Radius (P>50% members) 10.3 [arcmin]
  • CN 0.76 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 51 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near 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.
Relatively close Moderate extinction Near-solar metallicity Very young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 51 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 – 59.648 52.523 0.91 -0.28 -1.318 -10.009
Li et al. 2025 59.648 52.56 0.879 -0.279 -1.275 –
Almeida et al. 2025 59.689 52.55 – – – –
Zhang et al. 2024 59.769 52.642 – – – –
Hunt & Reffert 2024 59.769 52.642 0.926 -0.258 -1.354 -8.154
Celli et al. 2024 59.668 52.559 – – – –
Cavallo et al. 2024 59.614 52.509 0.92 – – –
Hunt & Reffert 2023 59.769 52.642 0.926 -0.258 -1.354 -8.154
He et al. 2022 59.575 52.495 0.919 -0.28 -1.328 –
Dias et al. 2021 59.689 52.55 0.863 -0.268 -1.312 –
Cantat-Gaudin et al. 2020 59.648 52.56 0.879 -0.279 -1.275 –
Cantat-Gaudin & Anders 2020 59.648 52.56 0.879 -0.279 -1.275 –
Castro-Ginard et al. 2019 59.668 52.559 0.881 -0.232 -1.366 –

💡 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 0.96 1.19 – 12 -0.339 – – –
Almeida et al. 2025 1.11 1.39 – 10 – 211 – –
Zhang et al. 2024 – – – – -0.191* – – –
Hunt & Reffert 2024 – – – – – 334* – –
Celli et al. 2024 – – – 10 – 193 – –
Cavallo et al. 2024 1.05 1.40 – 5 -0.200 – – –
Hunt & Reffert 2023 1.04 1.24 1.76 6 – – – –
He et al. 2022 – 1.85 – 8 – – – –
Dias et al. 2021 1.11 1.39 – 10 -0.109 – – –
Cantat-Gaudin et al. 2020 1.05 0.79 – 10 – – – –
Cantat-Gaudin & Anders 2020 1.10 – – – – – – –

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

Visualization
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UBC 51 UCC
UBC 51 HUNT23
UBC 51 CANTAT20
Galactocentric position diagram