VDBH 85

(van den Bergh-Hagen 85; BH 85; vdBergh-Hagen 85; MWSC 1748; ESO 213 05)

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0.80 UTI
0.81
CN
1.0
Cdens
0.75
CC3
0.71
Clit
1.0
Cdup
Nm (P>50%) 256
Core radius and density 1.9 [pc], 5.8 [pc-2]
C3 classification AB
  • CN 0.81 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.71 Moderately 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 85 is a rich, very dense object of high C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

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: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.23 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.23 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.0634, e_all=0.1542.

Data
πŸ” Search references for VDBH 85 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 150.467 -49.564 0.138 -5.681 4.665 61.462
Li et al. 2025 150.469 -49.564 0.106 -5.689 4.676 –
Hu & Soubiran 2025 150.476 -49.568 – – – –
Almeida et al. 2025 150.466 -49.568 – – – –
Hunt & Reffert 2024 150.466 -49.562 0.142 -5.659 4.652 61.253
Cavallo et al. 2024 150.476 -49.568 0.136 – – –
Hunt & Reffert 2023 150.466 -49.562 0.142 -5.659 4.652 61.253
Just et al. 2023 150.459 -49.581 – – – –
Jadhav & Subramaniam 2021 150.469 -49.564 – – – –
Dias et al. 2021 150.466 -49.568 0.101 -5.704 4.656 –
Cantat-Gaudin et al. 2020 150.469 -49.564 0.106 -5.689 4.676 –
SΓ‘nchez et al. 2020 150.467 -49.567 – -5.718 4.637 –
Cantat-Gaudin & Anders 2020 150.469 -49.564 0.106 -5.689 4.676 –
Soubiran et al. 2018 150.469 -49.564 – – – 60.84
Bica et al. 2019 150.458 -49.567 – – – –
Cantat-Gaudin et al. 2018 150.469 -49.564 0.106 -5.689 4.676 –
Sampedro et al. 2017 150.467 -49.567 – – – –
Kharchenko et al. 2016 150.459 -49.581 – – – –
Dias et al. 2014 150.467 -49.567 – -5.04 7.73 –
Kharchenko et al. 2013 150.465 -49.585 – -3.86 8.55 –
Bukowiecki et al. 2011 150.467 -49.557 – – – –
Dias et al. 2002 150.467 -49.567 – -4.2 7.57 –
Lynga 1987 150.485 -49.643 – – – –
van den Bergh & Hagen 1975 150.0 -49.4 – – – –

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– 6.04 1.22 1.56 1441 -0.157 1952 – 3
Li et al. 2025 5.95 1.65 – 1482 -0.154 – – –
Hu & Soubiran 2025 – – – – -0.160(5) – – –
Almeida et al. 2025 5.94 1.22 – 3221 – 1853 – –
Hunt & Reffert 2024 6.13 1.61 1.56 1399 – 2050(1) – –
Cavallo et al. 2024 3.52 1.67 – 3162 -0.310 – – –
Hunt & Reffert 2023 6.13 1.61 1.56 1400 – – – –
Just et al. 2023 – – – 631 – 986 – –
Jadhav & Subramaniam 2021 7.48 1.10 – 2291 – 3984 – 3(1)
Dias et al. 2021 5.94 1.22 – 3221 -0.028 – – –
Cantat-Gaudin et al. 2020 7.48 1.10 – 2291 – – – –
Kounkel et al. 2020 4.81 1.16 – 1862 – – – –
Cantat-Gaudin & Anders 2020 7.41 – – – – – – –
Soubiran et al. 2018 7.41 – – – – – – –
Cantat-Gaudin et al. 2018 7.41 – – – – – – –
Kharchenko et al. 2016 2.79 2.63 – 631 – – – –
Kharchenko et al. 2013 2.79 2.63 – 631 – – – –
Bukowiecki et al. 2011 15.05(1) 0.69 – 708 – – – –
Dias et al. 2002 1.50 0.73 – 708 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
FSR 1501 92.6 150.47 -49.56 0.14 -5.68 4.66 61.66 0.03
OC 0520 9.8 150.47 -49.56 0.14 -5.67 4.66 61.32 0.0

πŸ’‘ Note: The % column shows the percentage of members that VDBH 85 shares with each listed object.

Visualization
ℹ️
VDBH 85 UCC
VDBH 85 HUNT23
VDBH 85 CANTAT20
Galactocentric position diagram