Berkeley 6

(MWSC 145)

0.88 UTI

0.72

C_N

1.0

C_dens

1.0

C_C3

0.84

C_lit

1.0

C_dup

N₅₀ (P>50% members) 95

Stellar density (N₅₀/rad) 43.8 [N/pc²]

C3 classification AA

C_N 0.72 Moderately populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.84 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Berkeley 6 is a moderately populated, very dense object of very 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, 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.

Relatively close 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 6 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–	27.803	61.059	0.316	-0.894	-0.53	-88.921
Almeida et al.	2025	27.793	61.06	–	–	–	–
Hunt & Reffert	2024	27.806	61.058	0.323	-0.899	-0.533	-88.925
Cavallo et al.	2024	27.79	61.061	0.322	–	–	–
Hunt & Reffert	2023	27.806	61.058	0.323	-0.899	-0.533	-88.925
Almeida et al.	2023	27.798	61.059	–	–	–	–
Just et al.	2023	27.815	61.058	–	–	–	–
Dias et al.	2021	27.793	61.06	0.31	-0.858	-0.495	–
Cantat-Gaudin et al.	2020	27.803	61.061	0.31	-0.857	-0.485	–
Cantat-Gaudin & Anders	2020	27.803	61.061	0.31	-0.857	-0.485	–
Cantat-Gaudin et al.	2018	27.803	61.061	0.31	-0.857	-0.485	–
Loktin & Popova	2017	27.925	61.061	–	-0.268	-1.027	–
Kharchenko et al.	2016	27.815	61.058	–	–	–	–
Dias et al.	2014	27.796	61.061	–	-2.89	0.24	–
Kharchenko et al.	2013	27.825	61.06	–	-1.29	-3.22	–
Kharchenko et al.	2012	27.825	61.06	–	-1.29	-3.22	–
Dias et al.	2002	27.796	61.061	–	-2.89	0.24	–

💡 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]	B_frac	BSS
UCC	99999–	2.52	2.42	1.01	112	-0.114	686	0.68	–
Almeida et al.	2025	2.42	2.35	–	112	–	528	–	–
Hunt & Reffert	2024	–	–	–	–	–	887⁽¹⁾	–	–
Cavallo et al.	2024	2.98	2.40	–	76	0.680	–	–	–
Hunt & Reffert	2023	2.80	2.43	1.01	88	–	–	–	–
Almeida et al.	2023	2.45	2.45	–	36	-0.114	845⁽¹⁾	0.68	–
Just et al.	2023	–	–	–	398	–	160	–	–
Dias et al.	2021	2.42	2.35	–	112	-0.182	–	–	–
Cantat-Gaudin et al.	2020	3.05	1.80	–	224	–	–	–	–
Cantat-Gaudin & Anders	2020	2.95	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.95	–	–	–	–	–	–	–
Loktin & Popova	2017	4.52	2.28	–	19	–	–	–	–
Kharchenko et al.	2016	2.50	2.42	–	398	–	–	–	–
Kharchenko et al.	2013	2.50	2.42	–	398	–	–	–	–
Kharchenko et al.	2012	2.50	2.42	–	398	–	–	–	–
Dias et al.	2002	2.52	2.79	–	32	–	–	–	–

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

Visualization

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