Berkeley 7

(MWSC 149)

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0.90 UTI
0.76
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 128
Stellar density (N50/rad) 22.4 [N/pc2]
C3 classification AB
  • 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 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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Berkeley 7 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near 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, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object shares a very small percentage of members with 3 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 Berkeley 7 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– 28.547 62.371 0.341 -0.985 -0.206 -67.129
Almeida et al. 2025 28.549 62.367 – – – –
Hunt & Reffert 2024 28.543 62.366 0.338 -1.019 -0.246 –
Cavallo et al. 2024 28.512 62.359 0.338 – – –
Hunt & Reffert 2023 28.543 62.366 0.338 -1.019 -0.246 –
Almeida et al. 2023 28.557 62.366 – – – –
Just et al. 2023 28.533 62.367 – – – –
Jaehnig et al. 2021 28.544 62.369 0.358 -0.981 -0.162 –
Rain et al. 2021 28.546 62.366 0.337 -0.993 -0.13 –
Dias et al. 2021 28.549 62.367 0.326 -0.967 -0.13 –
Cantat-Gaudin et al. 2020 28.546 62.366 0.337 -0.993 -0.13 –
Cantat-Gaudin & Anders 2020 28.546 62.366 0.337 -0.993 -0.13 –
Cantat-Gaudin et al. 2018 28.546 62.366 0.337 -0.993 -0.13 –
Loktin & Popova 2017 28.545 62.367 – -4.554 -2.041 –
Kharchenko et al. 2016 28.533 62.367 – – – –
Dias et al. 2014 28.55 62.367 – -2.76 0.97 –
Kharchenko et al. 2013 28.545 62.37 – -4.3 -1.95 –
Gozha et al. 2012 28.55 62.367 – – – –
Kharchenko et al. 2012 28.545 62.37 – -4.3 -1.95 –
van den Bergh 2006 28.55 62.367 – – – –
Dias et al. 2002 28.55 62.367 – -2.76 0.97 –

💡 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– 2.6 2.2 2.19 18 0.016 591 0.69 0.0
Almeida et al. 2025 2.39 2.12 – 40 – 710 – –
Hunt & Reffert 2024 – – – – – 886(1) – –
Cavallo et al. 2024 2.98 2.11 – 45 0.650 – – –
Hunt & Reffert 2023 2.64 2.06 2.19 36 – – – –
Almeida et al. 2023 2.43 2.20 – 38 -0.058 472(1) 0.69 –
Just et al. 2023 – – – 18 – 73 – –
Jaehnig et al. 2021 2.75(1) – – – – – – –
Rain et al. 2021 2.73 2.48 – 4 – – – 0
Dias et al. 2021 2.39 2.12 – 40 0.090 – – –
Cantat-Gaudin et al. 2020 2.86 1.92 – 34 – – – –
Cantat-Gaudin & Anders 2020 2.73 – – – – – – –
Cantat-Gaudin et al. 2018 2.73 – – – – – – –
Loktin & Popova 2017 2.07 1.94 – 28 – – – –
Kharchenko et al. 2016 2.60 2.48 – 18 – – – –
Kharchenko et al. 2013 2.60 2.48 – 18 – – – –
Gozha et al. 2012 2.57 – – 4 -0.250 – – –
Kharchenko et al. 2012 2.60 2.48 – 18 – – – –
van den Bergh 2006 2.57 2.48 – 4 – – – –
Dias et al. 2002 2.57 2.48 – 4 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 2006 2.3 28.92 61.99 0.33 -1.07 -0.31 – 0.08
CWWDL 2617 0.8 27.99 62.7 0.33 -1.09 -0.23 – 0.3
CWWDL 2619 0.8 28.3 62.77 0.33 -1.0 -0.28 – 0.3

💡 Note: The % column shows the percentage of members that Berkeley 7 shares with each listed object.

Visualization
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Berkeley 7 UCC
Berkeley 7 HUNT23
Berkeley 7 CANTAT20
Galactocentric position diagram