UPK 29

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0.80 UTI
0.74
CN
1.0
Cdens
0.75
CC3
0.75
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 97
Radius (P>50% members) 12.2 [arcmin]
  • CN 0.74 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.75 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 29 is a moderately populated, 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 parameter (see Parameters). It is well-studied in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. 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.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UPK 29 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 – 278.591 -5.484 1.486 0.483 2.783 24.57
Li et al. 2025 278.617 -5.47 1.487 0.425 2.817 –
Almeida et al. 2025 278.63 -5.462 – – – –
Alfonso et al. 2024 278.572 -5.48 1.447 0.478 2.793 –
Hunt & Reffert 2024 278.586 -5.426 1.463 0.494 2.767 26.37
Cavallo et al. 2024 278.578 -5.505 1.473 – – –
Hunt & Reffert 2023 278.586 -5.426 1.463 0.494 2.767 26.37
Almeida et al. 2023 278.59 -5.434 – – – –
He et al. 2022 278.599 -5.439 1.488 0.444 2.773 –
Tarricq et al. 2022 278.614 -5.439 1.481 0.483 2.777 –
Dias et al. 2021 278.63 -5.462 1.475 0.42 2.852 25.799
Cantat-Gaudin et al. 2020 278.617 -5.47 1.487 0.425 2.817 –
Cantat-Gaudin & Anders 2020 278.616 -5.469 1.487 0.452 2.819 –
Sim et al. 2019 278.684 -5.504 – 0.45 2.83 –

💡 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 0.55 2.48 – 826 -0.037 – – –
Almeida et al. 2025 0.66 2.74 – 222 – 247 – –
Alfonso et al. 2024 0.68 1.90 – 1089 0.004 – – –
Hunt & Reffert 2024 – – – – – 402* – –
Cavallo et al. 2024 0.71 2.75 – 457 0.230 – – –
Hunt & Reffert 2023 0.64 2.88 2.45 238 – – – –
Almeida et al. 2023 0.65 2.68 – 352 0.138 168* 0.65 –
He et al. 2022 – 3.05 – 447 – – – –
Tarricq et al. 2022 0.67 – – 851 – – – –
Dias et al. 2021 0.66 2.74 – 222 0.004 – – –
Cantat-Gaudin et al. 2020 0.68 1.90 – 813 – – – –
Cantat-Gaudin & Anders 2020 0.66 – – – – – – –
Sim et al. 2019 0.66 – – 562 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14441 48.5 278.62 -5.47 1.49 0.45 2.8 25.11 0.0

💡 Note: The % column shows the percentage of members that UPK 29 shares with each listed object.

Visualization
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UPK 29 UCC
UPK 29 HUNT23
UPK 29 CANTAT20
Galactocentric position diagram