UBC 10 a

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0.44 UTI
0.0
CN
0.21
Cdens
0.75
CC3
0.62
Clit
1.0
Cdup
N50 (P>50% members) 22
Stellar density (N50/rad) 1.1 [N/pc2]
C3 classification AB
  • CN 0.0 Sparse
  • Cdens 0.21 Very loose
  • CC3 0.75 High quality
  • Clit 0.62 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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UBC 10 a is a sparse, very loose object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

Note: This object shares a significant percentage of members with 2 later reported entries. See table with shared members information.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 10 a 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 99999– 324.518 62.1 1.084 -2.115 -3.154 -19.138
Li et al. 2025 324.652 62.206 1.075 -2.131 -3.031 –
Alfonso et al. 2024 325.041 62.305 1.012 -2.663 -3.147 –
Hunt & Reffert 2024 325.278 61.968 1.115 -3.32 -4.831 -6.086
Celli et al. 2024 324.652 62.206 – – – –
Cavallo et al. 2024 325.587 62.29 1.117 – – –
Hunt & Reffert 2023 325.278 61.968 1.115 -3.32 -4.831 -6.086
He et al. 2022 324.804 62.357 1.086 -2.043 -3.107 –
Cantat-Gaudin et al. 2020 324.652 62.206 1.075 -2.131 -3.031 –
Cantat-Gaudin & Anders 2020 324.652 62.206 1.075 -2.131 -3.031 –
Bica et al. 2019 324.426 61.753 – – – –
Castro-Ginard et al. 2018 324.439 61.76 1.079 -2.147 -3.035 -23.12

💡 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] Bfrac BSS
UCC 99999– 0.87 1.19 0.56 15 0.010 126 – –
Li et al. 2025 0.78 1.26 – 15 -0.130 – – –
Alfonso et al. 2024 0.87 0.89 – 63 0.010 – – –
Hunt & Reffert 2024 – – – – – 48(1) – –
Celli et al. 2024 – – – 14 – 205 – –
Cavallo et al. 2024 0.97 1.31 – 30 0.380 – – –
Hunt & Reffert 2023 0.85 1.12 0.56 45 – – – –
He et al. 2022 – 1.30 – 11 – – – –
Cantat-Gaudin et al. 2020 0.87 0.89 – 14 – – – –
Cantat-Gaudin & Anders 2020 0.91 – – – – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UPK 172 72.0 324.81 62.33 1.09 -2.02 -3.12 -16.97 0.54
UBC 167 60.0 324.77 62.33 1.09 -2.04 -3.09 -17.91 0.0

💡 Note: The % column shows the percentage of members that UBC 10 a shares with each listed object.

Visualization
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UBC 10 a UCC
UBC 10 a HUNT23
UBC 10 a CANTAT20
Galactocentric position diagram