VDBH 99

(vdB-Hagen 99; vdBergh-Hagen 99; BH 99; MWSC 1831; FoF 2413; OCSN 147)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 861
Stellar density (N50/rad) 76.2 [N/pc2]
C3 classification AA
  • CN 1.0 Very rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
VDBH 99 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the 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.

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for VDBH 99 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 159.522 -59.165 2.232 -14.47 0.986 8.576
Li et al. 2025 159.553 -59.168 2.225 -14.494 0.919 –
Almeida et al. 2025 159.499 -59.15 – – – –
Alfonso et al. 2024 159.494 -59.149 2.207 -14.46 1.0 –
Hunt & Reffert 2024 159.554 -59.109 2.224 -14.477 0.98 5.823
Cavallo et al. 2024 159.571 -59.139 2.23 – – –
Hunt & Reffert 2023 159.554 -59.109 2.224 -14.477 0.98 5.823
Qin et al. 2023 159.54 -59.14 2.23 -14.48 1.0 9.82
Just et al. 2023 159.458 -59.122 – – – –
He et al. 2022 159.589 -59.162 2.245 -14.525 0.983 –
Jaehnig et al. 2021 159.494 -59.107 2.254 -14.491 1.008 –
Rain et al. 2021 159.553 -59.168 2.225 -14.494 0.919 –
Dias et al. 2021 159.499 -59.15 2.213 -14.449 0.963 11.571
Cantat-Gaudin et al. 2020 159.553 -59.168 2.225 -14.494 0.919 –
Cantat-Gaudin & Anders 2020 159.553 -59.168 2.225 -14.494 0.919 –
Liu & Pang 2019 159.536 -59.163 2.203 -14.444 0.984 –
Dias et al. 2019 159.554 -59.168 2.225 -14.494 0.919 11.617
Bossini et al. 2019 159.553 -59.168 – – – –
Soubiran et al. 2018 159.553 -59.168 – – – 11.96
Cantat-Gaudin et al. 2018 159.553 -59.168 2.225 -14.494 0.919 –
Loktin & Popova 2017 159.48 -59.183 – -13.85 0.05 –
Kharchenko et al. 2016 159.458 -59.122 – – – –
Dias et al. 2014 159.475 -59.183 – -5.81 -2.5 –
Kharchenko et al. 2013 159.465 -59.125 – -13.85 0.05 6.0
Gozha et al. 2012 159.475 -59.183 – – – –
Piskunov et al. 2008 159.453 -59.126 – – – –
Kharchenko et al. 2007 159.48 -59.18 – 0.32 – 6.0
van den Bergh 2006 159.475 -59.133 – – – –
Kharchenko et al. 2005 159.46 -59.13 – -14.1 0.55 6.0
Kharchenko et al. 2003 159.48 -59.14 – -14.94 1.67 –
Dias et al. 2002 159.475 -59.183 – -5.81 -2.5 11.2
Dambis 1999 159.475 -59.183 – – – –

💡 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– 0.465 0.22 0.52 53 0.067 303 – 0.0
Li et al. 2025 0.42 0.24 – 59 -0.081 – – –
Almeida et al. 2025 0.44 0.27 – 62 – 511 – –
Alfonso et al. 2024 0.47 0.34 – 46 0.067 – – –
Hunt & Reffert 2024 – – – – – 728(1) – –
Cavallo et al. 2024 0.47 0.50 – 17 0.080 – – –
Hunt & Reffert 2023 0.43 0.11 0.52 45 – – – –
Qin et al. 2023 0.47 0.22 – 56 – – – –
Just et al. 2023 – – – 100 – 29 – –
He et al. 2022 – 0.35 – 40 – – – –
Tarricq et al. 2022 0.46 – – 95 – – – –
Jaehnig et al. 2021 0.44(1) – – – – – – –
Rain et al. 2021 0.44 0.16 – 40 – – – 0
Dias et al. 2021 0.44 0.27 – 62 0.068 – – –
Cantat-Gaudin et al. 2020 0.47 0.34 – 95 – – – –
Cantat-Gaudin & Anders 2020 0.44 – – – – – – –
Liu & Pang 2019 – – – 46 -0.250 – – –
Dias et al. 2019 0.44 0.19 – 44 0.112 – – –
Bossini et al. 2019 0.41 0.20 – 81 0.000 – – –
Soubiran et al. 2018 0.44 – – – – – – –
Cantat-Gaudin et al. 2018 0.44 – – – – – – –
Loktin & Popova 2017 0.53 0.17 – 40 – – – –
Kharchenko et al. 2016 0.52 0.32 – 100 – – – –
Kharchenko et al. 2013 0.52 0.32 – 100 – – – –
Gozha et al. 2012 0.51 – – 40 – 95 – –
Piskunov et al. 2008 0.53 0.19 – 72 – – – –
van den Bergh 2006 0.51 0.19 – 40 – – – –
Kharchenko et al. 2005 0.53 0.19 – 72 – – – –
Kharchenko et al. 2003 0.51 0.19 – – – – – –
Dias et al. 2002 0.51 0.17 – 40 – – – –
Dambis 1999 0.43 0.23 – 50 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
XDOCC 07 3.8 159.44 -58.91 2.25 -14.37 0.92 9.48 0.0
HSC 2356 2.9 159.48 -59.03 2.05 -14.64 1.0 -11.52 0.0

💡 Note: The % column shows the percentage of members that VDBH 99 shares with each listed object.

Visualization
ℹī¸
VDBH 99 UCC
VDBH 99 HUNT23
VDBH 99 CANTAT20
Galactocentric position diagram