UPK 66

Click to load Aladin Lite
0.75 UTI
0.66
CN
0.92
Cdens
0.75
CC3
0.7
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 82
Radius (P>50% members) 21.4 [arcmin]
  • CN 0.66 Moderately populated
  • Cdens 0.92 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
ℹī¸
UPK 66 is a moderately populated, very dense object of 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 (see Parameters). It is moderately studied in the literature.
Close Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for UPK 66 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 305.356 13.447 1.471 0.453 -10.003 -7.024
Li et al. 2025 305.39 13.509 1.459 0.496 -9.95 –
Almeida et al. 2025 305.392 13.464 – – – –
Alfonso et al. 2024 305.416 13.453 1.447 0.44 -10.004 –
Hunt & Reffert 2024 305.283 13.343 1.472 0.428 -10.053 -5.494
Cavallo et al. 2024 305.375 13.332 1.48 – – –
Hunt & Reffert 2023 305.283 13.343 1.472 0.428 -10.053 -5.494
He et al. 2022 305.468 13.499 1.499 0.43 -10.005 –
Tarricq et al. 2022 305.335 13.423 1.468 0.466 -10.011 –
Dias et al. 2021 305.392 13.464 1.463 0.481 -9.962 -7.154
Cantat-Gaudin et al. 2020 305.39 13.509 1.459 0.496 -9.95 –
Cantat-Gaudin & Anders 2020 305.37 13.468 1.453 0.533 -9.976 –
Sim et al. 2019 305.337 13.478 – 0.51 -9.93 –

💡 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 0.69 0.15 – 165 0.168 – – –
Almeida et al. 2025 0.67 0.26 – 183 – 81 – –
Alfonso et al. 2024 0.67 0.26 – 138 -0.012 – – –
Hunt & Reffert 2024 – – – – – 98* – –
Cavallo et al. 2024 0.68 0.56 – 107 0.130 – – –
Hunt & Reffert 2023 0.65 0.15 0.50 236 – – – –
He et al. 2022 – 0.65 – 126 – – – –
Tarricq et al. 2022 0.65 – – 155 – – – –
Dias et al. 2021 0.67 0.26 – 183 -0.012 – – –
Cantat-Gaudin et al. 2020 0.67 0.26 – 148 – – – –
Cantat-Gaudin & Anders 2020 0.67 – – – – – – –
Sim et al. 2019 0.67 – – 126 – – – –

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

Visualization
ℹī¸
UPK 66 UCC
UPK 66 HUNT23
UPK 66 CANTAT20
Galactocentric position diagram