Berkeley 24

(MWSC 937; OCL 539; FSR 1070)

0.82 UTI

0.88

C_N

1.0

C_dens

0.75

C_C3

0.74

C_lit

1.0

C_dup

N_m (P>50%) 440

Core radius and density 1.6 [pc], 6.6 [pc^-2]

C3 classification AB

C_N 0.88 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.74 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Berkeley 24 is a rich, very dense object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, old cluster (see Parameters). It is moderately studied in the literature.

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

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

Distant Moderate extinction Massive Near-solar metallicity Old Contains BSS

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.93 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.93 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.0514, e_all=0.0637.

Data

🔍 Search references for Berkeley 24 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–	99.448	-0.879	0.178	0.33	1.261	76.143
Hu & Soubiran	2025	99.453	-0.871	–	–	–	–
Almeida et al.	2025	99.455	-0.871	–	–	–	–
Hunt & Reffert	2024	99.445	-0.877	0.187	0.326	1.266	64.848
Cavallo et al.	2024	99.453	-0.871	0.185	–	–	–
Hunt & Reffert	2023	99.445	-0.877	0.187	0.326	1.266	64.848
Just et al.	2023	99.443	-0.865	–	–	–	–
Jadhav & Subramaniam	2021	99.452	-0.874	–	–	–	–
Dias et al.	2021	99.455	-0.871	0.164	0.411	1.31	73.72
Cantat-Gaudin et al.	2020	99.452	-0.874	0.156	0.382	1.279	–
Sánchez et al.	2020	99.446	-0.872	–	0.44	1.392	–
Zhong et al.	2020	99.452	-0.874	–	0.382	1.279	51.392
Cantat-Gaudin & Anders	2020	99.452	-0.874	0.156	0.382	1.279	–
Soubiran et al.	2018	99.452	-0.874	–	–	–	73.84
Bica et al.	2019	99.45	-0.868	–	–	–	–
Cantat-Gaudin et al.	2018	99.452	-0.874	0.156	0.382	1.279	–
Dias et al.	2018	–	–	–	-1.67	-0.63	–
Loktin & Popova	2017	99.45	-0.872	–	0.565	0.412	–
Sampedro et al.	2017	99.446	-0.872	–	0.9	1.86	–
Kharchenko et al.	2016	99.443	-0.865	–	–	–	–
Dias et al.	2014	99.446	-0.872	–	-0.85	1.18	–
Kharchenko et al.	2013	99.45	-0.867	–	2.07	1.35	–
Bukowiecki et al.	2011	99.442	0.877	–	–	–	–
Dias et al.	2002	99.446	-0.872	–	-0.85	1.18	–
Lynga	1987	99.437	-0.909	–	–	–	–

💡 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–	4.9	1.84	1.76	1622	-0.306	2764	–	2
Hu & Soubiran	2025	–	–	–	–	-0.290⁽⁵⁾	–	–	–
Almeida et al.	2025	4.72	2.34	–	1400	–	2577	–	–
Hunt & Reffert	2024	4.53	1.85	1.76	1427	–	2664⁽¹⁾	–	–
Cavallo et al.	2024	4.53	1.92	–	1778	-0.140	–	–	–
Hunt & Reffert	2023	4.53	1.85	1.76	1426	–	–	–	–
Just et al.	2023	–	–	–	1622	–	2864	–	–
Jadhav & Subramaniam	2021	4.90	1.74	–	1413	–	4843	–	2⁽¹⁾
Dias et al.	2021	4.72	2.34	–	1400	-0.323	–	–	–
Cantat-Gaudin et al.	2020	4.90	1.74	–	1413	–	–	–	–
Kounkel et al.	2020	4.23	1.69	–	1479	–	–	–	–
Zhong et al.	2020	5.39⁽¹⁾	1.84	–	9210	-0.427	–	–	–
Cantat-Gaudin & Anders	2020	5.39	–	–	–	–	–	–	–
Soubiran et al.	2018	5.39	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	5.39	–	–	–	–	–	–	–
Loktin & Popova	2017	5.07	1.44	–	6310	–	–	–	–
Kharchenko et al.	2016	5.53	1.84	–	1622	–	–	–	–
Kharchenko et al.	2013	5.53	1.84	–	1622	–	–	–	–
Bukowiecki et al.	2011	4.98⁽¹⁾	1.29	–	1778	–	–	–	–
Dias et al.	2002	4.70	1.26	–	2188	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
S 283	9.8	99.48	-0.83	0.19	0.32	1.24	76.59	0.01

💡 Note: The % column shows the percentage of members that Berkeley 24 shares with each listed object.

Visualization

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