Bochum 3

(MWSC 1079)

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0.79 UTI
0.72
CN
1.0
Cdens
0.75
CC3
0.74
Clit
1.0
Cdup
Nm (P>50%) 95
Core radius and density 1.1 [pc], 7.1 [pc-2]
C3 classification AB
  • CN 0.72 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.74 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Bochum 3 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is moderately studied in the literature.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2216, e_all=0.0427.

Data
🔍 Search references for Bochum 3 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 105.86 -5.015 0.406 -1.172 -0.198 29.73
Li et al. 2025 105.86 -5.021 0.448 -1.174 -0.19 –
Almeida et al. 2025 105.861 -5.023 – – – –
Hunt & Reffert 2024 105.864 -5.011 0.392 -1.159 -0.206 29.731
Cavallo et al. 2024 105.87 -5.018 0.396 – – –
Hunt & Reffert 2023 105.864 -5.011 0.392 -1.159 -0.206 29.731
Almeida et al. 2023 105.857 -5.024 – – – –
Just et al. 2023 105.864 -5.003 – – – –
Dias et al. 2021 105.861 -5.023 0.453 -1.178 -0.195 –
Cantat-Gaudin et al. 2020 105.86 -5.021 0.448 -1.174 -0.19 –
Cantat-Gaudin & Anders 2020 105.86 -5.021 0.448 -1.174 -0.19 –
Bossini et al. 2019 105.86 -5.021 – – – –
Bica et al. 2019 105.863 -5.011 – – – –
Cantat-Gaudin et al. 2018 105.86 -5.021 0.448 -1.174 -0.19 –
Dias et al. 2018 – – – -1.48 1.13 –
Loktin & Popova 2017 105.87 -5.008 – -1.05 2.125 –
Sampedro et al. 2017 105.85 -5.05 – 1.69 0.68 –
Kharchenko et al. 2016 105.864 -5.003 – – – –
Dias et al. 2014 105.85 -5.05 – 0.57 -1.51 –
Kharchenko et al. 2013 105.87 -5.005 – 0.5 2.14 –
Bukowiecki et al. 2011 105.854 -5.038 – – – –
van den Bergh 2006 105.85 -5.067 – – – –
Dias et al. 2002 105.85 -5.05 – 0.27 -0.62 –
Lynga 1987 105.842 -5.078 – – – –

💡 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– 2.18 0.72 0.75 124 -0.099 300 0.53 –
Li et al. 2025 2.24 0.71 – 213 -0.061 – – –
Almeida et al. 2025 2.19 0.82 – 187 – 115 – –
Hunt & Reffert 2024 2.28 0.53 0.75 125 – 493(1) – –
Cavallo et al. 2024 2.02 0.86 – 229 -0.340 – – –
Hunt & Reffert 2023 2.28 0.53 0.75 125 – – – –
Almeida et al. 2023 2.17 0.73 – 252 -0.099 300(1) 0.53 –
Just et al. 2023 – – – 124 – 136 – –
Dias et al. 2021 2.19 0.82 – 187 -0.114 – – –
Cantat-Gaudin et al. 2020 2.24 0.69 – 115 – – – –
Kounkel et al. 2020 2.28 0.69 – 120 – – – –
Cantat-Gaudin & Anders 2020 2.09 – – – – – – –
Bossini et al. 2019 2.46 0.70 – 38 0.000 – – –
Cantat-Gaudin et al. 2018 2.09 – – – – – – –
Loktin & Popova 2017 3.97 0.33 – 347 – – – –
Kharchenko et al. 2016 2.15 0.85 – 124 – – – –
Kharchenko et al. 2013 2.15 0.85 – 124 – – – –
Bukowiecki et al. 2012 – – – – – 312 – –
Bukowiecki et al. 2011 1.03(1) 0.00 – 631 – – – –
van den Bergh 2006 1.76 0.76 – 78 – – – –
Dias et al. 2002 1.76 0.76 – 78 – – – –
Lynga 1987 – – – 63 – – – –

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

Visualization
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Bochum 3 UCC
Bochum 3 HUNT23
Bochum 3 CANTAT20
Galactocentric position diagram