UPK 508

Click to load Aladin Lite
0.77 UTI
0.35
CN
1.0
Cdens
1.0
CC3
0.75
Clit
1.0
Cdup
N50 (P>50% members) 35
Stellar density (N50/rad) 7.9 [N/pc2]
C3 classification AA
  • CN 0.35 Poorly 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 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
UPK 508 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a close distance, above 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 2 later reported entries. See table with shared members information.

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UPK 508 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 135.768 -34.942 1.191 -10.536 6.304 24.114
Li et al. 2025 135.775 -34.942 1.178 -10.558 6.235 –
Almeida et al. 2025 135.791 -34.937 – – – –
Alfonso et al. 2024 135.828 -35.01 1.146 -10.499 6.248 –
Hunt & Reffert 2024 135.754 -34.945 1.2 -10.485 6.319 23.644
Cavallo et al. 2024 135.754 -34.957 1.2 – – –
Hunt & Reffert 2023 135.754 -34.945 1.2 -10.485 6.319 23.644
Almeida et al. 2023 135.803 -34.953 – – – –
He et al. 2022 135.788 -34.977 1.191 -10.543 6.304 –
Tarricq et al. 2022 135.768 -34.923 1.187 -10.526 6.304 –
Dias et al. 2021 135.791 -34.937 1.172 -10.56 6.238 28.042
Cantat-Gaudin et al. 2020 135.775 -34.942 1.178 -10.558 6.235 –
Cantat-Gaudin & Anders 2020 135.775 -34.942 1.176 -10.578 6.246 –
Sim et al. 2019 135.752 -34.942 – -10.58 6.25 –

💡 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– 0.82 0.67 0.26 343 0.243 83 0.66 –
Li et al. 2025 0.75 0.67 – 552 -0.139 – – –
Almeida et al. 2025 0.82 0.70 – 415 – 83 – –
Alfonso et al. 2024 0.83 0.65 – 220 0.243 – – –
Hunt & Reffert 2024 – – – – – 67(1) – –
Cavallo et al. 2024 0.81 0.61 – 437 0.380 – – –
Hunt & Reffert 2023 0.79 0.63 0.26 174 – – – –
Almeida et al. 2023 0.81 0.92 – 343 -0.089 116(1) 0.66 –
He et al. 2022 – 0.95 – 200 – – – –
Tarricq et al. 2022 0.81 – – 115 – – – –
Dias et al. 2021 0.82 0.70 – 415 0.244 – – –
Cantat-Gaudin et al. 2020 0.83 0.65 – 100 – – – –
Cantat-Gaudin & Anders 2020 0.83 – – – – – – –
Sim et al. 2019 0.83 – – 398 – – – –

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14250 100.0 135.78 -34.95 1.2 -10.54 6.3 24.73 0.14
UBC 477 71.4 135.77 -34.95 1.19 -10.54 6.32 24.45 0.0

💡 Note: The % column shows the percentage of members that UPK 508 shares with each listed object.

Visualization
ℹī¸
UPK 508 UCC
UPK 508 HUNT23
UPK 508 CANTAT20
Galactocentric position diagram