Berkeley 71

(FSR 0810; MWSC 634; OCL 449)

0.96 UTI

0.78

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 169

Stellar density (N₅₀/rad) 25.0 [N/pc²]

C3 classification AA

C_N 0.78 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very 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 71 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above 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 metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for Berkeley 71 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–	85.237	32.277	0.246	0.652	-1.671	-10.755
Li et al.	2025	85.233	32.272	0.226	0.65	-1.614	–
Hu & Soubiran	2025	85.234	32.283	–	–	–	–
Almeida et al.	2025	85.223	32.279	–	–	–	–
Zhang et al.	2024	85.242	32.273	–	–	–	–
Hunt & Reffert	2024	85.242	32.273	0.238	0.631	-1.657	-8.45
Cavallo et al.	2024	85.234	32.283	0.235	–	–	–
Hunt & Reffert	2023	85.242	32.273	0.238	0.631	-1.657	-8.45
Just et al.	2023	85.229	32.267	–	–	–	–
Dias et al.	2021	85.223	32.279	0.222	0.653	-1.606	–
Spina et al.	2021	85.233	32.268	0.213	0.674	-1.623	–
Cantat-Gaudin et al.	2020	85.233	32.272	0.226	0.65	-1.614	–
Sánchez et al.	2020	85.229	32.278	–	0.549	-1.554	–
Donor et al.	2020	85.237	32.266	–	0.69	-1.66	-9.4
Zhong et al.	2020	85.233	32.272	–	0.65	-1.614	-14.364
Cantat-Gaudin & Anders	2020	85.233	32.272	0.226	0.65	-1.614	–
Soubiran et al.	2018	85.233	32.272	–	–	–	-26.7
Bica et al.	2019	85.222	32.28	–	–	–	–
Cantat-Gaudin et al.	2018	85.233	32.272	0.226	0.65	-1.614	–
Loktin & Popova	2017	85.23	32.278	–	0.533	-1.867	–
Kharchenko et al.	2016	85.229	32.267	–	–	–	–
Dias et al.	2014	85.229	32.278	–	-0.23	-3.55	–
Kharchenko et al.	2013	85.237	32.266	–	2.28	-6.33	–
Kharchenko et al.	2012	85.237	32.266	–	2.28	-6.33	–
Bukowiecki et al.	2011	85.242	32.26	–	–	–	–
Glushkova et al.	2010	85.236	32.276	–	–	–	–
Froebrich et al.	2007	85.237	32.271	–	–	–	–
Dias et al.	2002	85.229	32.278	–	-0.23	-3.55	–

💡 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–	3.39	2.76	2.25	881	-0.202	810	–	–
Li et al.	2025	3.15	3.00	–	938	-0.181	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.200⁽⁵⁾	–	–	–
Almeida et al.	2025	3.31	3.10	–	566	–	627	–	–
Zhang et al.	2024	–	–	–	–	-0.231⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	2358⁽¹⁾	–	–
Cavallo et al.	2024	3.48	3.48	–	525	0.100	–	–	–
Hunt & Reffert	2023	3.52	3.02	2.25	370	–	–	–	–
Just et al.	2023	–	–	–	1047	–	200	–	–
Dias et al.	2021	3.31	3.10	–	566	-0.188	–	–	–
Spina et al.	2021	4.13	–	–	871	-0.203⁽²⁰⁾	–	–	–
Cantat-Gaudin et al.	2020	3.60	2.53	–	871	–	–	–	–
Donor et al.	2020	–	–	–	–	-0.230	–	–	–
Zhong et al.	2020	3.26	2.70	–	9020	-0.276	–	–	–
Cantat-Gaudin & Anders	2020	3.93	–	–	–	–	–	–	–
Soubiran et al.	2018	3.93	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.93	–	–	–	–	–	–	–
Loktin & Popova	2017	5.42	3.14	–	550	–	–	–	–
Kharchenko et al.	2016	3.26	2.70	–	1047	–	–	–	–
Kharchenko et al.	2013	3.26	2.70	–	1047	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	992	–	–
Kharchenko et al.	2012	3.26	2.70	–	1047	–	–	–	–
Bukowiecki et al.	2011	3.47⁽¹⁾	2.67	–	891	–	–	–	–
Glushkova et al.	2010	2.45	2.82	–	631	–	–	–	–
Dias et al.	2002	3.26	2.51	–	1000	–	–	–	–

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

Visualization

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