UPK 394

Click to load Aladin Lite
0.84 UTI
0.66
CN
1.0
Cdens
1.0
CC3
0.78
Clit
1.0
Cdup
N50 (P>50% members) 82
Stellar density (N50/rad) 14.5 [N/pc2]
C3 classification AA
  • CN 0.66 Moderately populated
  • 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
ℹī¸
UPK 394 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, intermediate-age 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 a later reported entry. 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 394 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 78.832 6.302 1.234 -0.481 -2.01 -1.208
Li et al. 2025 78.808 6.291 1.233 -0.51 -1.975 –
Almeida et al. 2025 78.773 6.303 – – – –
Alfonso et al. 2024 78.817 6.303 1.182 -0.435 -2.039 –
Zhang et al. 2024 78.816 6.242 – – – –
Hunt & Reffert 2024 78.816 6.242 1.228 -0.463 -2.006 -5.84
Cavallo et al. 2024 78.876 6.307 1.239 – – –
Hunt & Reffert 2023 78.816 6.242 1.228 -0.463 -2.006 -5.84
Almeida et al. 2023 78.81 6.289 – – – –
He et al. 2022 78.793 6.301 1.246 -0.455 -2.017 –
Tarricq et al. 2022 78.802 6.289 1.229 -0.488 -2.029 –
Dias et al. 2021 78.773 6.303 1.231 -0.505 -1.992 –
Cantat-Gaudin et al. 2020 78.808 6.291 1.233 -0.51 -1.975 –
Cantat-Gaudin & Anders 2020 78.796 6.267 1.236 -0.507 -1.955 –
Sim et al. 2019 78.795 6.282 – -0.52 -2.03 –

💡 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– 0.79 0.24 0.48 200 -0.012 126 0.56 –
Li et al. 2025 0.84 0.18 – 273 0.222 – – –
Almeida et al. 2025 0.78 0.24 – 200 – 99 – –
Alfonso et al. 2024 0.79 0.31 – 188 -0.012 – – –
Zhang et al. 2024 – – – – -0.217(1) – – –
Hunt & Reffert 2024 – – – – – 162(1) – –
Cavallo et al. 2024 0.80 0.23 – 245 0.380 – – –
Hunt & Reffert 2023 0.77 0.12 0.48 170 – – – –
Almeida et al. 2023 0.78 0.34 – 310 -0.118 126(1) 0.56 –
He et al. 2022 – 0.35 – 89 – – – –
Tarricq et al. 2022 0.78 – – 219 – – – –
Dias et al. 2021 0.78 0.24 – 200 -0.012 – – –
Cantat-Gaudin et al. 2020 0.79 0.31 – 209 – – – –
Cantat-Gaudin & Anders 2020 0.79 – – – – – – –
Sim et al. 2019 0.80 – – 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
UBC 202 97.6 78.83 6.31 1.23 -0.49 -2.02 -1.21 0.05

💡 Note: The % column shows the percentage of members that UPK 394 shares with each listed object.

Visualization
ℹī¸
UPK 394 UCC
UPK 394 HUNT23
UPK 394 CANTAT20
Galactocentric position diagram