Berkeley 76

(MWSC 1099; OCL 568)

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0.60 UTI
0.75
CN
0.28
Cdens
0.75
CC3
0.61
Clit
1.0
Cdup
Nm (P>50%) 113
Core radius and density 2.7 [pc], 1.4 [pc-2]
C3 classification AB
  • CN 0.75 Rich
  • Cdens 0.28 Loose
  • CC3 0.75 High quality
  • Clit 0.61 Moderately 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 76 is a rich, loose object of high C3 quality. Its parallax locates it at a large distance, below 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 mass parameter (see Parameters). It is moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.94 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.94 (50th percentile).

Perren et al. (2022)
The CMD shows a diffuse TO at G=16.5 followed by a prominent giant branch. ASteCA gives a distance of 5.4 kpc and an age of 1.8 Gyr. Carraro 2013 found 12.6 kpc and 1.5 Gyr — the ages agree but the distance is very discrepant, attributable to Carraro et al. placing the TO 2 magnitudes fainter at V=18.5. OC02 and WEBDA reproduce the Carraro distance; CG20 gives a more reasonable 4.7 kpc.

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2347, e_all=0.236.

Data
🔍 Search references for Berkeley 76 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– 106.676 -11.73 0.18 -0.586 1.404 106.767
Hu & Soubiran 2025 106.677 -11.738 – – – –
Hunt & Reffert 2024 106.659 -11.724 0.156 -0.584 1.418 108.109
Cavallo et al. 2024 106.677 -11.738 0.163 – – –
Hunt & Reffert 2023 106.659 -11.724 0.156 -0.584 1.418 108.109
Just et al. 2023 106.658 -11.728 – – – –
Perren et al. 2022 106.672 -11.735 – – – –
Jadhav & Subramaniam 2021 106.672 -11.735 – – – –
Cantat-Gaudin et al. 2020 106.672 -11.735 0.218 -0.58 1.4 –
Cantat-Gaudin & Anders 2020 106.672 -11.735 0.218 -0.58 1.4 –
Bica et al. 2019 106.679 -11.717 – – – –
Cantat-Gaudin et al. 2018 106.672 -11.735 0.218 -0.58 1.4 –
Loktin & Popova 2017 106.665 -11.737 – -1.572 2.586 –
Sampedro et al. 2017 106.667 -11.733 – – – –
Kharchenko et al. 2016 106.658 -11.728 – – – –
Tadross 2014 106.667 -11.733 – – – –
Dias et al. 2014 106.667 -11.733 – 0.15 2.6 –
Kharchenko et al. 2013 106.665 -11.73 – -1.48 2.69 –
Bukowiecki et al. 2011 106.679 -11.731 – – – –
Dias et al. 2002 106.667 -11.733 – 0.15 2.6 –
Lynga 1987 106.637 -11.615 – – – –

💡 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– 4.66 1.9 1.63 944 -0.310 944 0.61 2
Hu & Soubiran 2025 – – – – -0.390(5) – – –
Hunt & Reffert 2024 5.26 1.90 1.63 945 – 1133(1) – –
Cavallo et al. 2024 4.37 1.88 – 1995 -0.310 – – –
Hunt & Reffert 2023 5.26 1.90 1.63 944 – – – –
Just et al. 2023 – – – 741 – 257 – –
Perren et al. 2022 5.40 1.89 – 1820 -0.110 4300 0.61 –
Jadhav & Subramaniam 2021 4.74 1.38 – 1660 – 756 – 2(1)
Cantat-Gaudin et al. 2020 4.74 1.38 – 1660 – – – –
Kounkel et al. 2020 3.90 2.12 – 617 – – – –
Cantat-Gaudin & Anders 2020 4.04 – – – – – – –
Cantat-Gaudin et al. 2018 4.04 – – – – – – –
Loktin & Popova 2017 4.66 2.19 – 617 – – – –
Kharchenko et al. 2016 2.36 2.31 – 741 – – – –
Tadross 2014 2.50 2.30 – 800 – – – –
Kharchenko et al. 2013 2.36 2.31 – 741 – – – –
Bukowiecki et al. 2011 6.25(1) 1.29 – 1585 – – – –
Dias et al. 2002 12.60 1.74 – 1514 – – – –

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

Visualization
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Berkeley 76 UCC
Berkeley 76 HUNT23
Berkeley 76 CANTAT20
Galactocentric position diagram