Berkeley 28

(MWSC 1002; Biurakan 10; OCL 532)

Click to load Aladin Lite
0.90 UTI
0.76
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 140
Radius (P>50% members) 1.7 [arcmin]
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Berkeley 28 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.
Distant Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Berkeley 28 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 103.029 2.92 0.235 -1.038 0.18 67.763
Li et al. 2025 103.028 2.922 0.209 -0.987 0.154 –
Hu & Soubiran 2025 103.033 2.914 – – – –
Almeida et al. 2025 103.028 2.921 – – – –
Hunt & Reffert 2024 103.029 2.919 0.224 -1.028 0.189 66.923
Cavallo et al. 2024 103.033 2.914 0.221 – – –
Hunt & Reffert 2023 103.029 2.919 0.224 -1.028 0.189 66.923
Almeida et al. 2023 103.033 2.923 – – – –
Just et al. 2023 103.028 2.912 – – – –
Jaehnig et al. 2021 103.029 2.914 0.252 -1.02 0.197 –
Rain et al. 2021 103.028 2.922 0.209 -0.987 0.154 –
Dias et al. 2021 103.028 2.921 0.202 -0.982 0.124 68.074
Cantat-Gaudin et al. 2020 103.028 2.922 0.209 -0.987 0.154 –
Cantat-Gaudin & Anders 2020 103.028 2.922 0.209 -0.987 0.154 –
Soubiran et al. 2018 103.028 2.922 – – – 69.1
Bica et al. 2019 103.028 2.919 – – – –
Cantat-Gaudin et al. 2018 103.028 2.922 0.209 -0.987 0.154 –
Loktin & Popova 2017 103.035 2.934 – -0.486 -0.567 –
Kharchenko et al. 2016 103.028 2.912 – – – –
Dias et al. 2014 103.05 2.933 – 1.68 -1.54 –
Kharchenko et al. 2013 103.035 2.91 – -0.49 -2.56 –
Gozha et al. 2012 103.05 2.933 – – – –
van den Bergh 2006 103.033 2.911 – – – –
Dias et al. 2002 103.05 2.933 – 1.68 -1.54 –

💡 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
Li et al. 2025 3.71 1.82 – 943 -0.246 – – –
Hu & Soubiran 2025 – – – – -0.250* – – –
Almeida et al. 2025 4.52 2.29 – 159 – 658 – –
Hunt & Reffert 2024 – – – – – 925* – –
Cavallo et al. 2024 2.90 2.01 – 589 -0.520 – – –
Hunt & Reffert 2023 3.93 1.94 1.77 340 – – – –
Almeida et al. 2023 3.58 2.12 – 335 -0.257 356* 0.74 –
Just et al. 2023 – – – 34 – 85 – –
Jaehnig et al. 2021 4.10* – – – – – – –
Rain et al. 2021 4.20 2.36 – 69 – – – 0
Dias et al. 2021 4.52 2.29 – 159 -0.059 – – –
Cantat-Gaudin et al. 2020 4.79 1.60 – 347 – – – –
Cantat-Gaudin & Anders 2020 4.20 – – – – – – –
Soubiran et al. 2018 4.20 – – – – – – –
Cantat-Gaudin et al. 2018 4.20 – – – – – – –
Loktin & Popova 2017 2.79 2.11 – 122 – – – –
Kharchenko et al. 2016 1.96 2.26 – 34 – – – –
Kharchenko et al. 2013 1.96 2.26 – 34 – – – –
Gozha et al. 2012 2.56 – – 70 -0.610 – – –
van den Bergh 2006 2.56 2.36 – 71 – – – –
Dias et al. 2002 2.56 2.36 – 70 – – – –

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

Visualization
ℹī¸
Berkeley 28 UCC
Berkeley 28 HUNT23
Berkeley 28 CANTAT20
Galactocentric position diagram