UBC 563

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0.78 UTI
0.61
CN
1.0
Cdens
1.0
CC3
0.65
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 72
Radius (P>50% members) 5.6 [arcmin]
  • CN 0.61 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.65 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 563 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UBC 563 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 – 256.744 -30.704 0.887 -0.534 -4.168 -14.658
Li et al. 2025 256.749 -30.673 0.891 -0.528 -4.161 –
Almeida et al. 2025 256.746 -30.704 – – – –
Hunt & Reffert 2024 256.746 -30.687 0.885 -0.524 -4.19 -10.9
Cavallo et al. 2024 256.739 -30.722 0.888 – – –
Hunt & Reffert 2023 256.746 -30.687 0.885 -0.524 -4.19 -10.9
Almeida et al. 2023 256.741 -30.702 – – – –
He et al. 2022 256.751 -30.683 0.885 -0.519 -4.168 –
Dias et al. 2021 256.746 -30.704 0.88 -0.529 -4.184 –
Cantat-Gaudin et al. 2020 256.749 -30.673 0.891 -0.528 -4.161 –
Castro-Ginard et al. 2020 256.767 -30.688 0.891 -0.53 -4.181 –

💡 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 0.90 1.61 – 546 -0.142 – – –
Almeida et al. 2025 1.11 1.66 – 400 – 121 – –
Hunt & Reffert 2024 – – – – – 407* – –
Cavallo et al. 2024 1.05 1.94 – 309 0.010 – – –
Hunt & Reffert 2023 1.06 1.89 1.71 134 – – – –
Almeida et al. 2023 1.06 1.90 – 145 0.107 129* 0.48 –
He et al. 2022 – 2.10 – 112 – – – –
Tarricq et al. 2022 1.05 – – 209 – – – –
Dias et al. 2021 1.11 1.66 – 400 0.125 – – –
Cantat-Gaudin et al. 2020 1.08 1.23 – 191 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14243 80.6 256.75 -30.7 0.89 -0.53 -4.18 -14.66 0.0

💡 Note: The % column shows the percentage of members that UBC 563 shares with each listed object.

Visualization
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UBC 563 UCC
UBC 563 HUNT23
UBC 563 CANTAT20
Galactocentric position diagram