Berkeley 12

(MWSC 413; OCL 412; FSR 0710)

0.92 UTI

0.84

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 350

Stellar density (N₅₀/rad) 28.5 [N/pc²]

C3 classification AB

C_N 0.84 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 1.0 Very 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 12 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is very well-studied in the literature.

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

Distant Moderate extinction Massive Near-solar metallicity Old Contains BSS

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Berkeley 12 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–	71.102	42.691	0.233	0.747	-1.76	-33.358
Hu & Soubiran	2025	71.11	42.695	–	–	–	–
Almeida et al.	2025	71.097	42.687	–	–	–	–
Hunt & Reffert	2024	71.096	42.691	0.231	0.728	-1.769	-30.329
Cavallo et al.	2024	71.11	42.695	0.229	–	–	–
Hunt & Reffert	2023	71.096	42.691	0.231	0.728	-1.769	-30.329
Just et al.	2023	71.097	42.69	–	–	–	–
Jaehnig et al.	2021	71.107	42.689	0.183	0.85	-1.763	–
Rain et al.	2021	71.1	42.691	0.202	0.836	-1.713	–
Dias et al.	2021	71.097	42.687	0.196	0.845	-1.715	–
Cantat-Gaudin et al.	2020	71.1	42.691	0.202	0.836	-1.713	–
Cantat-Gaudin & Anders	2020	71.1	42.691	0.202	0.836	-1.713	–
Bica et al.	2019	71.104	42.693	–	–	–	–
Cantat-Gaudin et al.	2018	71.1	42.691	0.202	0.836	-1.713	–
Loktin & Popova	2017	71.145	42.684	–	-4.95	-2.203	–
Kharchenko et al.	2016	71.097	42.69	–	–	–	–
Dias et al.	2014	71.15	42.683	–	-0.78	1.41	–
Kharchenko et al.	2013	71.107	42.69	–	-5.57	-1.34	–
Gozha et al.	2012	71.15	42.683	–	–	–	–
Kharchenko et al.	2012	71.107	42.69	–	-5.57	-1.34	–
van den Bergh	2006	71.156	42.677	–	–	–	–
Chen et al.	2003	71.143	42.691	–	–	–	–
Dias et al.	2002	71.15	42.683	–	-0.78	1.41	–

💡 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–	3.71	2.17	2.14	3981	0.070	1442	–	13.0
Hu & Soubiran	2025	–	–	–	–	-0.030⁽⁵⁾	–	–	–
Almeida et al.	2025	3.81	2.71	–	1687	–	1442	–	–
Hunt & Reffert	2024	–	–	–	–	–	3802⁽¹⁾	–	–
Cavallo et al.	2024	3.77	2.57	–	1202	-0.020	–	–	–
Hunt & Reffert	2023	3.71	2.69	2.14	762	–	–	–	–
Just et al.	2023	–	–	–	3981	–	1086	–	–
Jaehnig et al.	2021	5.39⁽¹⁾	–	–	–	–	–	–	–
Rain et al.	2021	4.32	2.17	–	3981	–	–	–	13
Dias et al.	2021	3.81	2.71	–	1687	-0.256	–	–	–
Cantat-Gaudin et al.	2020	4.31	2.16	–	1995	–	–	–	–
Cantat-Gaudin & Anders	2020	4.32	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.32	–	–	–	–	–	–	–
Loktin & Popova	2017	2.21	2.42	–	1479	–	–	–	–
Kharchenko et al.	2016	3.30	2.17	–	3981	–	–	–	–
Kharchenko et al.	2013	3.30	2.17	–	3981	0.070	–	–	–
Gozha et al.	2012	3.16	–	–	3981	0.070	–	–	–
Kharchenko et al.	2012	3.30	2.17	–	3981	0.070	–	–	–
van den Bergh	2006	3.16	2.17	–	4677	–	–	–	–
Chen et al.	2003	3.16	2.17	–	4000	0.070⁽¹⁾	–	–	–
Dias et al.	2002	3.16	2.17	–	3981	0.070	–	–	–

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

Visualization

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