Berkeley 77

(FSR 1138; MWSC 1189; OCL 555; MWSC 1188)

0.93 UTI

0.63

C_N

1.0

C_dens

1.0

C_C3

1.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 76

Stellar density (N₅₀/rad) 12.9 [N/pc²]

C3 classification AA

C_N 0.63 Moderately populated
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

ℹ️

Berkeley 77 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low 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 Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Berkeley 77 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	110.361	-3.234	0.216	-0.978	-0.128	71.099
Li et al.	2025	110.362	-3.234	0.257	-1.001	-0.113	–
Hu & Soubiran	2025	110.368	-3.238	–	–	–	–
Almeida et al.	2025	110.359	-3.235	–	–	–	–
Hunt & Reffert	2024	110.359	-3.239	0.21	-0.971	-0.12	71.1
Cavallo et al.	2024	110.368	-3.238	0.207	–	–	–
Hunt & Reffert	2023	110.359	-3.239	0.21	-0.971	-0.12	71.1
Almeida et al.	2023	110.36	-3.236	–	–	–	–
Just et al.	2023	110.356	-3.23	–	–	–	–
Dias et al.	2021	110.359	-3.235	0.26	-0.986	-0.109	–
Cantat-Gaudin et al.	2020	110.362	-3.234	0.257	-1.001	-0.113	–
Cantat-Gaudin & Anders	2020	110.362	-3.234	0.257	-1.001	-0.113	–
Soubiran et al.	2018	110.362	-3.234	–	–	–	73.92
Bica et al.	2019	110.36	-3.232	–	–	–	–
Cantat-Gaudin et al.	2018	110.362	-3.234	0.257	-1.001	-0.113	–
Loktin & Popova	2017	110.37	-3.229	–	-1.889	-9.318	–
Kharchenko et al.	2016	110.356	-3.23	–	–	–	–
Dias et al.	2014	110.362	-3.234	–	-1.8	0.56	–
Kharchenko et al.	2013	110.362	-3.233	–	-2.77	-6.16	–
Froebrich et al.	2007	110.354	-3.233	–	–	–	–
Dias et al.	2002	110.362	-3.234	–	-1.8	0.56	–

💡 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–	3.78	0.5	1.28	716	-0.175	457	0.45	–
Li et al.	2025	4.10	0.50	–	767	-0.068	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.240⁽⁵⁾	–	–	–
Almeida et al.	2025	3.78	0.50	–	692	–	323	–	–
Hunt & Reffert	2024	–	–	–	–	–	591⁽¹⁾	–	–
Cavallo et al.	2024	3.06	0.85	–	891	-0.690	–	–	–
Hunt & Reffert	2023	4.13	0.18	1.28	946	–	–	–	–
Almeida et al.	2023	3.75	0.56	–	766	-0.175	306⁽¹⁾	0.45	–
Just et al.	2023	–	–	–	684	–	2495	–	–
Dias et al.	2021	3.78	0.50	–	692	-0.087	–	–	–
Cantat-Gaudin et al.	2020	3.61	0.29	–	741	–	–	–	–
Cantat-Gaudin & Anders	2020	3.50	–	–	–	–	–	–	–
Soubiran et al.	2018	3.50	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.50	–	–	–	–	–	–	–
Loktin & Popova	2017	7.09	0.72	–	891	–	–	–	–
Kharchenko et al.	2016	4.70	0.39	–	684	–	–	–	–
Kharchenko et al.	2013	4.70	0.39	–	684	–	–	–	–
Dias et al.	2002	4.63	0.37	–	631	–	–	–	–

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

Visualization

ℹ️

1 2 3