UPK 613

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0.65 UTI
0.34
CN
0.75
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 34
Radius (P>50% members) 11.7 [arcmin]
  • CN 0.34 Poorly populated
  • Cdens 0.75 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
ℹī¸
UPK 613 is a poorly populated, dense object of high C3 quality. Its parallax locates it at a close distance, above 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 moderately studied in the literature.
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 UPK 613 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 – 226.296 -49.152 1.134 -4.503 -3.635 -27.133
Li et al. 2025 226.276 -49.152 1.146 -4.566 -3.64 –
Almeida et al. 2025 226.226 -49.151 – – – –
Alfonso et al. 2024 226.232 -49.12 1.076 -4.499 -3.676 –
Hunt & Reffert 2024 226.289 -49.162 1.12 -4.439 -3.676 -29.78
Cavallo et al. 2024 226.294 -49.121 1.127 – – –
Hunt & Reffert 2023 226.289 -49.162 1.12 -4.439 -3.676 -29.78
Almeida et al. 2023 226.26 -49.144 – – – –
Dias et al. 2021 226.226 -49.151 1.149 -4.556 -3.672 –
Cantat-Gaudin et al. 2020 226.276 -49.152 1.146 -4.566 -3.64 –
Cantat-Gaudin & Anders 2020 226.309 -49.152 1.13 -4.536 -3.682 –
Sim et al. 2019 226.221 -49.164 – -4.54 -3.63 –

💡 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 0.79 0.55 – 239 -0.357 – – –
Almeida et al. 2025 0.84 0.58 – 136 – 101 – –
Alfonso et al. 2024 0.85 0.28 – 83 -0.033 – – –
Hunt & Reffert 2024 – – – – – 63* – –
Cavallo et al. 2024 0.81 0.66 – 251 -0.590 – – –
Hunt & Reffert 2023 0.84 0.36 0.48 213 – – – –
Almeida et al. 2023 0.84 0.66 – 244 -0.231 117* 0.72 –
Tarricq et al. 2022 0.84 – – 85 – – – –
Dias et al. 2021 0.84 0.58 – 136 -0.034 – – –
Cantat-Gaudin et al. 2020 0.86 0.28 – 83 – – – –
Cantat-Gaudin & Anders 2020 0.86 – – – – – – –
Sim et al. 2019 0.87 – – 71 – – – –

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

Visualization
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UPK 613 UCC
UPK 613 HUNT23
UPK 613 CANTAT20
Galactocentric position diagram