VDBH 205

(vdB-Hagen 205; vdBergh-Hagen 205; BH 205)

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0.87 UTI
0.68
CN
1.0
Cdens
1.0
CC3
0.82
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 87
Radius (P>50% members) 3.2 [arcmin]
  • CN 0.68 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.82 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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VDBH 205 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very 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.

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

Relatively close Moderate extinction Near-solar metallicity Very young

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

Data
🔍 Search references for VDBH 205 in: SciX Simbad
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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 254.051 -40.635 0.581 -0.147 -1.105 -30.678
Almeida et al. 2025 254.059 -40.637 – – – –
Hunt & Reffert 2024 254.033 -40.655 1.058 -0.465 -1.168 –
Celli et al. 2024 254.053 -40.636 – – – –
Hunt & Reffert 2023 254.033 -40.655 1.058 -0.465 -1.168 –
Almeida et al. 2023 254.047 -40.635 – – – –
Dias et al. 2021 254.059 -40.637 0.574 -0.144 -1.096 –
Cantat-Gaudin et al. 2020 254.053 -40.636 0.569 -0.15 -1.083 –
Cantat-Gaudin & Anders 2020 254.053 -40.636 0.569 -0.15 -1.083 –
Dias et al. 2014 254.046 -40.667 – -1.72 -2.44 –
Gozha et al. 2012 254.046 -40.667 – – – –
Piskunov et al. 2008 254.031 -40.676 – – – –
Kharchenko et al. 2007 254.04 -40.67 – 0.06 – -7.0
Kharchenko et al. 2005 254.04 -40.67 – -1.12 -1.22 -7.0
Kharchenko et al. 2003 254.05 -40.66 – -0.66 -2.78 –
Dias et al. 2002 254.046 -40.667 – -1.72 -2.44 -7.0

💡 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
Almeida et al. 2025 1.61 1.38 – 8 – 449 – –
Hunt & Reffert 2024 – – – – – 140* – –
Celli et al. 2024 – – – 6 – 452 – –
Hunt & Reffert 2023 0.95 2.65 0.49 4699 – – – –
Almeida et al. 2023 1.62 1.45 – 6 0.148 1643* 0.60 –
Dias et al. 2021 1.61 1.38 – 8 0.110 – – –
Cantat-Gaudin et al. 2020 1.61 1.23 – 6 – – – –
Cantat-Gaudin & Anders 2020 1.67 – – – – – – –
Gozha et al. 2012 0.42 – – 13 – 89 – –
Piskunov et al. 2008 2.16 0.93 – 13 – – – –
Kharchenko et al. 2005 2.16 0.93 – 13 – – – –
Kharchenko et al. 2003 0.42 0.31 – – – – – –
Dias et al. 2002 2.16 0.93 – 13 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
ESO 332 13 97.7 254.11 -40.61 0.59 -0.12 -1.12 -21.73 0.42
UBC 323 93.1 253.97 -40.69 0.59 -0.23 -1.25 -21.03 0.37

💡 Note: The % column shows the percentage of members that VDBH 205 shares with each listed object.

Visualization
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VDBH 205 UCC
VDBH 205 HUNT23
VDBH 205 CANTAT20
Galactocentric position diagram