UPK 94

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0.60 UTI
0.44
CN
0.67
Cdens
0.75
CC3
0.56
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 44
Radius (P>50% members) 12.9 [arcmin]
  • CN 0.44 Poorly populated
  • Cdens 0.67 Moderately dense
  • CC3 0.75 High quality
  • Clit 0.56 Moderately studied
  • Cdup 1.0 Unique
📥 Members 📊 Colab 🔬 Bayestar19 🔍 SciX 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview
UPK 94 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a close distance, below 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 moderately studied in the literature.

Note: This object shares a large 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
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 304.788 27.606 1.036 2.104 1.03 -11.423
Almeida et al. 2025 304.765 27.592 – – – –
Alfonso et al. 2024 304.722 27.623 1.008 2.139 1.012 –
Hunt & Reffert 2024 304.851 27.628 1.031 2.108 1.046 -12.329
Cavallo et al. 2024 304.789 27.593 1.033 – – –
Hunt & Reffert 2023 304.851 27.628 1.031 2.108 1.046 -12.329
Dias et al. 2021 304.765 27.592 1.033 2.118 1.082 –
Cantat-Gaudin et al. 2020 304.778 27.618 1.026 2.128 1.073 –
Sim et al. 2019 304.754 27.623 – 2.12 1.06 –

💡 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
Almeida et al. 2025 0.93 1.16 – 318 – 126 – –
Alfonso et al. 2024 0.95 0.98 – 69 0.109 – – –
Hunt & Reffert 2024 – – – – – 109* – –
Cavallo et al. 2024 1.00 1.30 – 331 -0.180 – – –
Hunt & Reffert 2023 0.93 0.96 0.50 272 – – – –
Tarricq et al. 2022 0.93 – – 135 – – – –
Dias et al. 2021 0.93 1.16 – 318 0.109 – – –
Cantat-Gaudin et al. 2020 0.95 0.98 – 135 – – – –
Sim et al. 2019 0.94 – – 79 – – – –

💡 Note: The parameters are sometimes transformed from their original values to match the format of the columns shown here, see FAQ. The columns DAv, Bfr, BSS correspond to differential extinction, binary fraction, and blue stragglers, respectively. BSS values can be listed as fractions or integers.
(*): indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14333 88.6 304.78 27.62 1.04 2.1 1.03 -11.42 0.02

💡 Note: The % column shows the percentage of members that UPK 94 shares with each listed object.

Visualization
UPK 94 UCC
UPK 94 HUNT23
UPK 94 CANTAT20
Galactocentric position diagram

💡 Note: How are the galactocentric plots generated? See FAQ.