VDBH 217

(vdB-Hagen 217; van den Bergh-Hagen 217; BH 217; vdBergh-Hagen 217; MWSC 2553; ESO 333 02)

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0.88 UTI
0.77
CN
1.0
Cdens
1.0
CC3
0.81
Clit
1.0
Cdup
Nm (P>50%) 160
Core radius and density 1.1 [pc], 10 [pc-2]
C3 classification AA
  • CN 0.77 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.81 Well-studied
  • Cdup 1.0 Unique
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
VDBH 217 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is well-studied in the literature.

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.62 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.62 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2323, e_all=0.1125.

Data
πŸ” Search references for VDBH 217 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 259.075 -40.817 0.321 -0.7 -1.843 14.346
Almeida et al. 2025 259.075 -40.814 – – – –
Hunt & Reffert 2024 259.073 -40.818 0.326 -0.712 -1.848 48.033
Cavallo et al. 2024 259.07 -40.817 0.326 – – –
Hunt & Reffert 2023 259.073 -40.818 0.326 -0.712 -1.848 48.033
Just et al. 2023 259.07 -40.81 – – – –
Dias et al. 2022 259.072 -40.818 0.316 -0.704 -1.86 –
Richer et al. 2021 259.074 -40.821 0.326 -0.676 -1.805 –
Dias et al. 2021 259.075 -40.814 0.314 -0.684 -1.807 –
Cantat-Gaudin et al. 2020 259.071 -40.815 0.31 -0.661 -1.826 –
SΓ‘nchez et al. 2020 259.075 -40.817 – -0.737 -1.975 –
Cantat-Gaudin & Anders 2020 259.071 -40.815 0.31 -0.661 -1.826 –
Soubiran et al. 2018 259.071 -40.815 – – – -12.65
Bica et al. 2019 259.062 -40.824 – – – –
Cantat-Gaudin et al. 2018 259.071 -40.815 0.31 -0.661 -1.826 –
Dias et al. 2018 – – – -0.32 -2.18 –
Dib et al. 2018 259.08 -40.81 – – – –
Sampedro et al. 2017 259.075 -40.817 – -2.07 -0.94 –
Joshi et al. 2016 259.08 -40.81 – – – –
Kharchenko et al. 2016 259.07 -40.81 – – – –
Dias et al. 2014 259.075 -40.817 – -2.17 -1.0 –
Kharchenko et al. 2013 259.08 -40.81 – -0.13 -3.66 –
Bukowiecki et al. 2011 259.067 -40.817 – – – –
Dias et al. 2002 259.075 -40.817 – -2.17 -1.0 –
Lynga 1987 259.033 -40.821 – – – –
van den Bergh & Hagen 1975 258.15 -40.767 – – – –

πŸ’‘ 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– 2.64 4.1 2.42 50 0.201 1110 – –
Almeida et al. 2025 2.13 3.35 – 13 – 986 – –
Hunt & Reffert 2024 2.75 4.28 2.42 37 – 3054(1) – –
Cavallo et al. 2024 2.64 4.30 – 83 0.410 – – –
Hunt & Reffert 2023 2.75 4.28 2.42 37 – – – –
Just et al. 2023 – – – 50 – 110 – –
Dias et al. 2022 2.65(1) 4.21(1) – 7(1) 0.162(1) – – –
Richer et al. 2021 – 1.78 – – – – – –
Dias et al. 2021 2.13 3.35 – 13 0.240 – – –
Cantat-Gaudin et al. 2020 3.10 3.27 – 35 – – – –
Kounkel et al. 2020 2.77 4.23 – 63 – – – –
Cantat-Gaudin & Anders 2020 2.95 – – – – – – –
Soubiran et al. 2018 2.95 – – – – – – –
Cantat-Gaudin et al. 2018 2.95 – – – – – – –
Dib et al. 2018 1.72 – – 50 – – – –
Joshi et al. 2016 1.72 4.10 – 50 – – – –
Kharchenko et al. 2016 1.72 4.10 – 50 – – – –
Kharchenko et al. 2013 1.72 4.10 – 50 – – – –
Bukowiecki et al. 2012 – – – – – 1234 – –
Bukowiecki et al. 2011 1.71(1) 3.53 – 45 – – – –
Dias et al. 2002 1.39 3.94 – 50 -0.580 – – –

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

Visualization
ℹ️
VDBH 217 UCC
VDBH 217 HUNT23
VDBH 217 CANTAT20
Galactocentric position diagram