Berkeley 64

(MWSC 182)

0.91 UTI

0.78

C_N

1.0

C_dens

0.75

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 176

Stellar density (N₅₀/rad) 9.0 [N/pc²]

C3 classification AB

C_N 0.78 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 64 is a rich, very dense object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, metal-poor, old cluster (see Parameters). It is very well-studied in the literature.

Note: This object shares a small percentage of members with a later reported entry. See table with shared members information.

Distant Moderate extinction Massive Metal-poor Old

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for Berkeley 64 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–	35.426	65.887	0.164	-0.553	0.942	-40.495
Li et al.	2025	35.428	65.888	0.159	-0.511	0.998	–
Almeida et al.	2025	35.42	65.893	–	–	–	–
Hunt & Reffert	2024	35.433	65.888	0.166	-0.562	0.939	-35.386
Cavallo et al.	2024	35.443	65.897	0.166	–	–	–
Hunt & Reffert	2023	35.433	65.888	0.166	-0.562	0.939	-35.386
Just et al.	2023	35.402	65.888	–	–	–	–
Jaehnig et al.	2021	35.429	65.884	0.188	-0.519	1.01	–
Dias et al.	2021	35.42	65.893	0.163	-0.502	0.996	–
Cantat-Gaudin et al.	2020	35.428	65.888	0.159	-0.511	0.998	–
Bica et al.	2019	35.428	65.893	–	–	–	–
Loktin & Popova	2017	35.415	65.89	–	-1.836	1.516	–
Kharchenko et al.	2016	35.402	65.888	–	–	–	–
Kharchenko et al.	2013	35.415	65.89	–	-2.19	2.38	–
Gozha et al.	2012	35.275	65.9	–	–	–	–
Kharchenko et al.	2012	35.415	65.89	–	-2.2	2.38	–
Bukowiecki et al.	2011	35.429	65.884	–	–	–	–
van den Bergh	2006	35.262	65.897	–	–	–	–
Chen et al.	2003	35.25	65.898	–	–	–	–
Dias et al.	2002	35.275	65.9	–	-2.2	2.38	–

💡 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–	4.73	2.95	1.51	1000	-0.610	1079	–	–
Li et al.	2025	4.67	2.98	–	847	0.016	–	–	–
Almeida et al.	2025	4.55	2.95	–	843	–	593	–	–
Hunt & Reffert	2024	–	–	–	–	–	1896⁽¹⁾	–	–
Cavallo et al.	2024	5.83	3.52	–	331	-0.270	–	–	–
Hunt & Reffert	2023	4.97	3.06	1.51	430	–	–	–	–
Just et al.	2023	–	–	–	1000	–	1079	–	–
Jaehnig et al.	2021	5.26⁽¹⁾	–	–	–	–	–	–	–
Dias et al.	2021	4.55	2.95	–	843	-0.203	–	–	–
Cantat-Gaudin et al.	2020	4.79	2.28	–	1230	–	–	–	–
Loktin & Popova	2017	3.61	2.03	–	1000	–	–	–	–
Kharchenko et al.	2016	4.80	2.79	–	1000	–	–	–	–
Kharchenko et al.	2013	4.80	2.79	–	1000	-0.610	–	–	–
Gozha et al.	2012	3.98	–	–	1000	-0.610	–	–	–
Kharchenko et al.	2012	4.80	2.79	–	1000	-0.610	–	–	–
Bukowiecki et al.	2011	4.92⁽¹⁾	2.26	–	1122	–	–	–	–
van den Bergh	2006	3.98	3.26	–	1000	–	–	–	–
Chen et al.	2003	3.98	3.26	–	1000	-0.610⁽¹⁾	–	–	–
Dias et al.	2002	3.98	3.26	–	1000	-0.610	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0241	14.2	35.43	65.9	0.17	-0.53	0.94	-38.05	0.0

💡 Note: The % column shows the percentage of members that Berkeley 64 shares with each listed object.

Visualization

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