Berkeley 61

(MWSC 75; OCL 308; FSR 0514)

0.88 UTI

0.75

C_N

1.0

C_dens

0.62

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 113

Radius (P>50% members) 3.1 [arcmin]

C_N 0.75 Rich
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Berkeley 61 is a rich, very dense object of intermediate 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 distance, absorption, age, and mass parameters (see Parameters). It is very well-studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Berkeley 61 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	–	12.032	67.201	0.291	-2.508	-0.113	-59.329
Li et al.	2025	12.04	67.199	0.309	-2.505	-0.014	–
Almeida et al.	2025	12.049	67.203	–	–	–	–
Hunt & Reffert	2024	12.043	67.198	0.288	-2.496	-0.14	-54.991
Cavallo et al.	2024	12.034	67.202	0.292	–	–	–
Hunt & Reffert	2023	12.043	67.198	0.288	-2.496	-0.14	-54.991
Almeida et al.	2023	12.036	67.199	–	–	–	–
Just et al.	2023	12.068	67.19	–	–	–	–
Dias et al.	2021	12.049	67.203	0.32	-2.486	-0.028	–
Cantat-Gaudin et al.	2020	12.04	67.199	0.309	-2.505	-0.014	–
Sánchez et al.	2020	12.125	67.2	–	-2.307	0.126	–
Cantat-Gaudin & Anders	2020	12.04	67.199	0.309	-2.505	-0.014	–
Bossini et al.	2019	12.04	67.199	–	–	–	–
Bica et al.	2019	12.057	67.19	–	–	–	–
Cantat-Gaudin et al.	2018	12.04	67.199	0.309	-2.505	-0.014	–
Loktin & Popova	2017	12.075	67.2	–	-3.661	1.21	–
Kharchenko et al.	2016	12.068	67.19	–	–	–	–
Dias et al.	2014	12.125	67.2	–	-7.26	0.35	–
Kharchenko et al.	2013	12.079	67.193	–	-1.95	0.98	–
Kharchenko et al.	2012	12.079	67.193	–	-1.95	0.98	–
Dias et al.	2002	12.125	67.2	–	-7.26	0.35	–

💡 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]	Bfr	BSS
Li et al.	2025	1.12	0.65	–	9830	-0.217	–	–	–
Almeida et al.	2025	2.64	2.46	–	197	–	309	–	–
Hunt & Reffert	2024	–	–	–	–	–	605*	–	–
Cavallo et al.	2024	3.77	2.86	–	22	-0.330	–	–	–
Hunt & Reffert	2023	3.17	2.55	1.23	157	–	–	–	–
Almeida et al.	2023	2.72	2.54	–	84	-0.115	364*	0.70	–
Just et al.	2023	–	–	–	966	–	19	–	–
Dias et al.	2021	2.64	2.46	–	197	-0.110	–	–	–
Cantat-Gaudin et al.	2020	2.92	2.07	–	182	–	–	–	–
Cantat-Gaudin & Anders	2020	2.96	–	–	–	–	–	–	–
Bossini et al.	2019	3.23	2.13	–	146	0.000	–	–	–
Cantat-Gaudin et al.	2018	2.96	–	–	–	–	–	–	–
Loktin & Popova	2017	2.50	1.90	–	40	–	–	–	–
Kharchenko et al.	2016	2.15	3.23	–	966	–	–	–	–
Kharchenko et al.	2013	2.15	3.23	–	966	–	–	–	–
Kharchenko et al.	2012	2.15	3.23	–	966	–	–	–	–
Dias et al.	2002	3.80	2.14	–	178	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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