Berkeley 43

(MWSC 3075; OCL 102; FSR 0122)

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0.87 UTI
0.87
CN
1.0
Cdens
0.75
CC3
0.87
Clit
1.0
Cdup
N50 (P>50% members) 415
Stellar density (N50/rad) 37.6 [N/pc2]
C3 classification AB
  • CN 0.87 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.87 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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Berkeley 43 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate* distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~4.39 kpc) differs significantly from the median photometric distance (~2.75 kpc).

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

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Wood sample.

Data
🔍 Search references for Berkeley 43 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 99999– 288.876 11.273 0.228 -1.083 -3.666 30.145
Almeida et al. 2025 288.865 11.258 – – – –
Hunt & Reffert 2024 288.88 11.269 0.239 -1.119 -3.696 40.458
Cavallo et al. 2024 288.86 11.27 0.243 – – –
Hunt & Reffert 2023 288.88 11.269 0.239 -1.119 -3.696 40.458
Just et al. 2023 288.871 11.263 – – – –
Dias et al. 2021 288.865 11.258 0.175 -1.046 -3.516 29.62
Cantat-Gaudin et al. 2020 288.872 11.265 0.186 -1.035 -3.504 –
Donor et al. 2020 288.877 11.265 – -0.92 -3.27 30.0
Cantat-Gaudin & Anders 2020 288.872 11.265 0.186 -1.035 -3.504 –
Soubiran et al. 2018 288.872 11.265 – – – 29.15
Bica et al. 2019 288.872 11.274 – – – –
Cantat-Gaudin et al. 2018 288.872 11.265 0.186 -1.035 -3.504 –
Loktin & Popova 2017 288.885 11.265 – 0.243 -5.278 –
Kharchenko et al. 2016 288.871 11.263 – – – –
Kharchenko et al. 2013 288.877 11.265 – -0.01 -4.49 –
Gozha et al. 2012 288.9 11.217 – – – –
Dias et al. 2002 288.9 11.217 – 16.65 18.8 –

💡 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– 2.745 4.71 2.65 316 0.015 2095 – –
Almeida et al. 2025 2.46 4.69 – 204 – 2095 – –
Hunt & Reffert 2024 – – – – – 11509(1) – –
Cavallo et al. 2024 4.31 5.58 – 15 0.680 – – –
Hunt & Reffert 2023 3.52 6.25 2.65 75 – – – –
Just et al. 2023 – – – 610 – 115 – –
Dias et al. 2021 2.46 4.69 – 204 0.138 – – –
Donor et al. 2020 – – – – 0.030 – – –
Cantat-Gaudin & Anders 2020 4.66 – – – – – – –
Soubiran et al. 2018 4.66 – – – – – – –
Cantat-Gaudin et al. 2018 4.66 – – – – – – –
Loktin & Popova 2017 3.03 4.70 – 398 – – – –
Kharchenko et al. 2016 1.35 4.71 – 610 – – – –
Kharchenko et al. 2013 1.35 4.71 – 610 0.000 – – –
Gozha et al. 2012 1.03 – – 316 0.000 – – –
Dias et al. 2002 1.03 7.13 – 316 0.000 – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0071 17.1 288.88 11.27 0.26 -1.09 -3.7 32.54 0.0

💡 Note: The % column shows the percentage of members that Berkeley 43 shares with each listed object.

Visualization
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Berkeley 43 UCC
Berkeley 43 HUNT23
Berkeley 43 CANTAT20
Galactocentric position diagram