UPK 82

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0.87 UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.78
Clit
1.0
Cdup
N50 (P>50% members) 140
Stellar density (N50/rad) 7.3 [N/pc2]
C3 classification AA
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.78 Well-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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UPK 82 is a rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is well-studied in the literature.

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

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UPK 82 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– 298.354 26.412 1.838 2.297 -2.152 -17.006
Li et al. 2025 298.285 26.379 1.842 2.358 -2.138 –
Almeida et al. 2025 298.264 26.397 – – – –
Alfonso et al. 2024 298.102 26.438 1.777 2.12 -2.206 –
Zhang et al. 2024 298.464 26.202 – – – –
Hunt & Reffert 2024 298.464 26.202 1.822 2.278 -2.169 -16.125
Cavallo et al. 2024 298.243 26.412 1.828 – – –
Hunt & Reffert 2023 298.464 26.202 1.822 2.278 -2.169 -16.125
Almeida et al. 2023 298.214 26.464 – – – –
He et al. 2022 298.378 26.385 1.845 2.319 -2.153 –
Tarricq et al. 2022 298.15 26.172 1.825 2.292 -2.135 –
Dias et al. 2021 298.264 26.397 1.836 2.37 -2.139 -12.417
Cantat-Gaudin et al. 2020 298.285 26.379 1.842 2.358 -2.138 –
Cantat-Gaudin & Anders 2020 298.285 26.39 1.842 2.375 -2.135 –
Sim et al. 2019 298.291 26.394 – 2.34 -2.13 –

💡 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– 0.53 0.38 0.7 83 0.021 156 0.62 –
Li et al. 2025 0.53 0.35 – 87 0.043 – – –
Almeida et al. 2025 0.53 0.41 – 150 – 156 – –
Alfonso et al. 2024 0.55 0.38 – 83 0.034 – – –
Zhang et al. 2024 – – – – 0.009(1) – – –
Hunt & Reffert 2024 – – – – – 153(1) – –
Cavallo et al. 2024 0.55 0.84 – 38 -0.200 – – –
Hunt & Reffert 2023 0.53 0.18 0.70 78 – – – –
Almeida et al. 2023 0.50 0.38 – 132 -0.051 212(1) 0.62 –
He et al. 2022 – 0.70 – 63 – – – –
Tarricq et al. 2022 0.55 – – 85 – – – –
Dias et al. 2021 0.53 0.41 – 150 0.034 – – –
Cantat-Gaudin et al. 2020 0.55 0.38 – 81 – – – –
Cantat-Gaudin & Anders 2020 0.53 – – – – – – –
Sim et al. 2019 0.54 – – 79 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
FoF 2417 78.6 298.32 26.4 1.83 2.32 -2.16 -16.28 0.0
CWWDL 14618 18.6 298.49 26.21 1.83 2.36 -2.21 -12.48 0.0

💡 Note: The % column shows the percentage of members that UPK 82 shares with each listed object.

Visualization
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UPK 82 UCC
UPK 82 HUNT23
UPK 82 CANTAT20
Galactocentric position diagram