UPK 605

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0.82 UTI
0.61
CN
1.0
Cdens
1.0
CC3
0.75
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 72
Radius (P>50% members) 8.7 [arcmin]
  • CN 0.61 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.75 Well-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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UPK 605 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (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.

Close Low extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UPK 605 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 – 234.581 -65.956 1.336 -3.655 -4.297 0.923
Li et al. 2025 234.582 -65.957 1.319 -3.627 -4.257 –
Almeida et al. 2025 234.589 -65.953 – – – –
Alfonso et al. 2024 234.518 -65.987 1.296 -3.648 -4.297 –
Hunt & Reffert 2024 234.588 -65.976 1.329 -3.672 -4.291 0.267
Cavallo et al. 2024 234.601 -65.949 1.327 – – –
Hunt & Reffert 2023 234.588 -65.976 1.329 -3.672 -4.291 0.267
Almeida et al. 2023 234.519 -65.922 – – – –
He et al. 2022 234.609 -65.964 1.336 -3.664 -4.302 –
Tarricq et al. 2022 234.582 -65.957 1.332 -3.648 -4.302 –
Dias et al. 2021 234.589 -65.953 1.323 -3.618 -4.243 3.519
Cantat-Gaudin et al. 2020 234.582 -65.957 1.319 -3.627 -4.257 –
Cantat-Gaudin & Anders 2020 234.581 -65.957 1.32 -3.615 -4.19 –
Sim et al. 2019 234.565 -65.946 – -3.63 -4.28 –

💡 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 0.77 0.30 – 80 0.059 – – –
Almeida et al. 2025 0.73 0.44 – 200 – 93 – –
Alfonso et al. 2024 0.73 0.16 – 89 -0.133 – – –
Hunt & Reffert 2024 – – – – – 150* – –
Cavallo et al. 2024 0.74 0.20 – 309 0.280 – – –
Hunt & Reffert 2023 0.72 0.14 0.83 117 – – – –
Almeida et al. 2023 0.73 0.20 – 376 -0.141 127* 0.69 –
He et al. 2022 – 0.25 – 89 – – – –
Tarricq et al. 2022 0.72 – – 76 – – – –
Dias et al. 2021 0.73 0.44 – 200 -0.133 – – –
Cantat-Gaudin et al. 2020 0.73 0.16 – 69 – – – –
Cantat-Gaudin & Anders 2020 0.74 – – – – – – –
Sim et al. 2019 0.74 – – 71 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 304 100.0 234.59 -65.94 1.33 -3.66 -4.3 0.92 0.17
CWWDL 14308 61.1 234.64 -65.96 1.34 -3.66 -4.3 0.93 0.0

💡 Note: The % column shows the percentage of members that UPK 605 shares with each listed object.

Visualization
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UPK 605 UCC
UPK 605 HUNT23
UPK 605 CANTAT20
Galactocentric position diagram