UPK 53

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0.79 UTI
0.79
CN
1.0
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 196
Radius (P>50% members) 22.6 [arcmin]
  • CN 0.79 Rich
  • Cdens 1.0 Very 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
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UPK 53 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, near 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 and metallicity parameters (see Parameters). It is moderately studied in the literature.

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

Close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UPK 53 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 – 288.52 14.369 1.682 2.454 1.021 -5.703
Li et al. 2025 288.544 14.392 1.661 2.441 1.086 –
Almeida et al. 2025 288.576 14.414 – – – –
Alfonso et al. 2024 288.48 14.33 1.642 2.409 1.012 –
Hunt & Reffert 2024 288.529 14.269 1.678 2.465 1.032 -5.224
Cavallo et al. 2024 288.519 14.353 1.675 – – –
Hunt & Reffert 2023 288.529 14.269 1.678 2.465 1.032 -5.224
He et al. 2022 288.575 14.434 1.679 2.467 1.03 –
Tarricq et al. 2022 288.508 14.273 1.687 2.45 1.038 –
Dias et al. 2021 288.576 14.414 1.665 2.457 1.07 -4.203
Cantat-Gaudin et al. 2020 288.544 14.392 1.661 2.441 1.086 –
Cantat-Gaudin & Anders 2020 288.553 14.396 1.659 2.449 1.084 –
Sim et al. 2019 288.59 14.388 – 2.44 1.08 –

💡 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 0.48 1.22 – 605 -0.338 – – –
Almeida et al. 2025 0.58 1.39 – 194 – 245 – –
Alfonso et al. 2024 0.62 0.98 – 486 0.119 – – –
Hunt & Reffert 2024 – – – – – 434* – –
Cavallo et al. 2024 0.60 1.37 – 214 0.300 – – –
Hunt & Reffert 2023 0.56 1.31 1.28 188 – – – –
He et al. 2022 – 1.55 – 71 – – – –
Tarricq et al. 2022 0.61 – – 490 – – – –
Dias et al. 2021 0.58 1.39 – 194 0.119 – – –
Cantat-Gaudin et al. 2020 0.62 0.98 – 457 – – – –
Cantat-Gaudin & Anders 2020 0.59 – – – – – – –
Sim et al. 2019 0.59 – – 794 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14443 19.4 288.5 14.27 1.66 2.44 0.99 -5.64 0.0
CWWDL 14632 15.3 288.6 14.35 1.69 2.42 1.06 -6.7 0.0

💡 Note: The % column shows the percentage of members that UPK 53 shares with each listed object.

Visualization
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UPK 53 UCC
UPK 53 HUNT23
UPK 53 CANTAT20
Galactocentric position diagram