Berkeley 56

(MWSC 3491; OCL 199; FSR 0269)

Click to load Aladin Lite
0.66 UTI
1.0
CN
0.4
Cdens
0.75
CC3
0.58
Clit
1.0
Cdup
Nm (P>50%) 624
Core radius and density 5.8 [pc], 2.0 [pc-2]
C3 classification AB
  • CN 1.0 Very rich
  • Cdens 0.4 Loose
  • CC3 0.75 High quality
  • Clit 0.58 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Berkeley 56 is a very rich, loose object of high C3 quality. Its parallax locates it at a very large distance, well below the mid-plane, affected by moderate extinction. It is catalogued as an extremely massive, near-solar metallicity, old 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: 0.05 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.05 (50th percentile).

Perren et al. (2022)
Always classified as an old open cluster; one of the most populated in the sample and the second most massive (~53000 M_sun). Janes 1994 gives 5.7 kpc and 5.67 Gyr; Carraro 2006 finds 12.1 kpc and 4 Gyr; Janes 2011 gives 15.2 kpc and 6 Gyr. OC02 and WEBDA adopt the Carraro values; MWSC gives 13.2 kpc and 2.5 Gyr; CG20 gives 9.5 kpc and 3 Gyr. There is a substantial spread across all studies. ASteCA gives 11.1 kpc and 5.2 Gyr, within the full range of published values.

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1355, e_all=0.2622.

Data
🔍 Search references for Berkeley 56 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 319.401 41.824 0.07 -1.911 -1.843 -72.787
Hu & Soubiran 2025 319.401 41.831 – – – –
Hunt & Reffert 2024 319.385 41.828 0.095 -1.895 -1.865 -64.266
Cavallo et al. 2024 319.401 41.831 0.069 – – –
Hunt & Reffert 2023 319.385 41.828 0.095 -1.895 -1.865 -64.266
Just et al. 2023 319.404 41.814 – – – –
Perren et al. 2022 319.425 41.9 – – – –
Jadhav & Subramaniam 2021 319.391 41.835 – – – –
Cantat-Gaudin et al. 2020 319.391 41.835 0.047 -1.901 -1.831 –
Cantat-Gaudin & Anders 2020 319.391 41.835 0.047 -1.901 -1.831 –
Bica et al. 2019 319.413 41.848 – – – –
Cantat-Gaudin et al. 2018 319.391 41.835 0.047 -1.901 -1.831 –
Dias et al. 2018 – – – -3.7 -5.73 –
Sampedro et al. 2017 319.425 41.827 – -2.36 -7.63 –
Kharchenko et al. 2016 319.404 41.814 – – – –
Dias et al. 2014 319.425 41.827 – 0.09 -8.11 –
Kharchenko et al. 2013 319.41 41.817 – -0.56 -0.07 –
Bukowiecki et al. 2011 319.404 41.45 – – – –
Dias et al. 2002 319.425 41.827 – -0.56 -0.07 –
Lynga 1987 319.431 41.891 – – – –

💡 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– 11.12 1.42 1.57 2732 -0.340 19210 0.7 2
Hu & Soubiran 2025 – – – – -0.270(5) – – –
Hunt & Reffert 2024 9.05 2.06 1.57 1937 – 6483(1) – –
Cavallo et al. 2024 9.64 1.63 – 5012 -0.430 – – –
Hunt & Reffert 2023 9.05 2.06 1.57 1936 – – – –
Just et al. 2023 – – – 2512 – 18664 – –
Perren et al. 2022 11.12 1.61 – 5248 -0.340 61000 0.70 –
Jadhav & Subramaniam 2021 9.51 1.42 – 2951 – 19757 – 2(1)
Cantat-Gaudin et al. 2020 9.51 1.42 – 2951 – – – –
Kounkel et al. 2020 6.80 1.83 – 1549 – – – –
Cantat-Gaudin & Anders 2020 13.14 – – – – – – –
Cantat-Gaudin et al. 2018 13.14 – – – – – – –
Kharchenko et al. 2016 13.18 0.98 – 2512 – – – –
Kharchenko et al. 2013 13.18 0.98 – 2512 – – – –
Bukowiecki et al. 2011 11.85(1) 0.69 – 4467 – – – –
Dias et al. 2002 12.10 1.26 – 3981 – – – –

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

Visualization
ℹī¸
Berkeley 56 UCC
Berkeley 56 HUNT23
Berkeley 56 CANTAT20
Galactocentric position diagram