VDBH 56

(vdB-Hagen 56; vdBergh-Hagen 56; BH 56; MWSC 1605; ESO 260 12; Magakian 425; FoF 2328)

Click to load Aladin Lite
0.92 UTI
0.83
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 314
Stellar density (N50/rad) 24.5 [N/pc2]
C3 classification AB
  • CN 0.83 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very 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 56 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption, age, and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object shares a very small percentage of members with 2 later reported entries. See table with shared members information.

Liu et al. (2025)
Classified as primordial binary cluster 31 along with Alessi_43, and of multiple system 11 along with Alessi_43 and Collinder_197.

Palma et al. (2025)
Classified as optical pair (not dynamically associated) P84, along with FSR_1421.

Cavallo et al. (2024)
Gold sample.

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

Data
πŸ” Search references for VDBH 56 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 134.395 -43.157 1.105 -5.518 5.419 15.453
Liu et al. 2025 134.37 -43.22 1.1 -5.52 5.39 13.23
Li et al. 2025 134.355 -43.181 1.078 -5.57 5.439 –
Almeida et al. 2025 134.356 -43.163 – – – –
Alfonso et al. 2024 134.441 -43.143 1.059 -5.751 5.215 –
Hunt & Reffert 2024 134.369 -43.22 1.103 -5.517 5.39 13.226
Celli et al. 2024 134.355 -43.181 – – – –
Cavallo et al. 2024 134.407 -43.131 1.103 – – –
Hunt & Reffert 2023 134.369 -43.22 1.103 -5.517 5.39 13.226
Just et al. 2023 134.275 -43.282 – – – –
He et al. 2022 134.456 -43.138 1.102 -5.524 5.394 –
Richer et al. 2021 133.508 -43.361 2.294 -12.688 6.463 –
Dias et al. 2021 134.356 -43.163 1.08 -5.557 5.396 20.208
Cantat-Gaudin et al. 2020 134.355 -43.181 1.078 -5.57 5.439 –
SΓ‘nchez et al. 2020 134.283 -43.25 – -5.642 5.535 –
Cantat-Gaudin & Anders 2020 134.355 -43.181 1.078 -5.57 5.439 –
Liu & Pang 2019 134.424 -43.154 1.077 -5.62 5.282 –
Soubiran et al. 2018 134.355 -43.181 – – – 19.69
Bica et al. 2019 134.28 -43.268 – – – –
Cantat-Gaudin et al. 2018 134.355 -43.181 1.078 -5.57 5.439 –
Loktin & Popova 2017 134.28 -43.249 – -11.103 7.149 -18.0
Kharchenko et al. 2016 134.275 -43.282 – – – –
Dias et al. 2014 134.283 -43.25 – -3.59 4.68 –
Kharchenko et al. 2013 134.28 -43.285 – -4.9 6.97 -18.0
Gozha et al. 2012 134.283 -43.25 – – – –
Piskunov et al. 2008 134.273 -43.246 – – – –
Kharchenko et al. 2007 134.28 -43.25 – 0.3 – -18.0
Piskunov et al. 2007 134.273 -43.246 – – – –
Kharchenko et al. 2005 134.28 -43.25 – -4.88 6.08 -18.0
Kharchenko et al. 2003 134.29 -43.24 – -4.99 5.72 –
Dias et al. 2002 134.283 -43.25 – -3.51 4.91 -18.0

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– 0.84 0.62 1.75 17 -0.120 148 – –
Liu et al. 2025 0.95 0.20 – 15 – – – –
Li et al. 2025 0.78 0.73 – 12 -0.241 – – –
Almeida et al. 2025 0.86 0.84 – 14 – 342 – –
Alfonso et al. 2024 0.84 0.70 – 17 -0.021 – – –
Hunt & Reffert 2024 – – – – – 426(1) – –
Celli et al. 2024 – – – 18 – 311 – –
Cavallo et al. 2024 0.91 1.06 – 5 -0.120 – – –
Hunt & Reffert 2023 0.87 0.67 1.75 8 – – – –
Just et al. 2023 – – – 20 – 6 – –
He et al. 2022 – 0.55 – 6 – – – –
Richer et al. 2021 – 0.12 – 35 – – – –
Dias et al. 2021 0.86 0.84 – 14 -0.021 – – –
Cantat-Gaudin et al. 2020 0.84 0.70 – 18 – – – –
Cantat-Gaudin & Anders 2020 0.90 – – – – – – –
Liu & Pang 2019 – – – 21 -0.500 – – –
Soubiran et al. 2018 0.90 – – – – – – –
Cantat-Gaudin et al. 2018 0.90 – – – – – – –
Loktin & Popova 2017 1.08 3.98 – 11 – – – –
Kharchenko et al. 2016 0.74 0.61 – 20 – – – –
Kharchenko et al. 2013 0.74 0.61 – 20 – – – –
Gozha et al. 2012 0.67 – – 17 – 148 – –
Piskunov et al. 2008 0.68 0.62 – 17 – 96(1) – –
Piskunov et al. 2007 0.68 0.62 – 17 – 39 – –
Kharchenko et al. 2005 0.68 0.62 – 17 – – – –
Kharchenko et al. 2003 0.67 0.46 – – – – – –
Dias et al. 2002 0.68 0.62 – 17 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
SAI 101 8.0 134.45 -43.17 1.1 -5.45 5.32 16.54 0.0
HSC 2131 6.4 134.35 -43.18 1.3 -5.47 5.22 – 0.06

πŸ’‘ Note: The % column shows the percentage of members that VDBH 56 shares with each listed object.

Visualization
ℹ️
VDBH 56 UCC
VDBH 56 HUNT23
VDBH 56 CANTAT20
Galactocentric position diagram