Berkeley 45

(MWSC 3086; OCL 107)

0.90 UTI

0.79

C_N

1.0

C_dens

1.0

C_C3

0.86

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 212

Radius (P>50% members) 1.8 [arcmin]

C_N 0.79 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.86 Well-studied
C_dup 1.0 Unique

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

Overview

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Berkeley 45 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 high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is well-studied in the literature.

Distant High extinction Massive Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Berkeley 45 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	–	289.779	15.715	0.246	-1.357	-4.577	6.164
Almeida et al.	2025	289.777	15.714	–	–	–	–
Hunt & Reffert	2024	289.775	15.717	0.254	-1.378	-4.587	12.222
Cavallo et al.	2024	289.77	15.713	0.254	–	–	–
Hunt & Reffert	2023	289.775	15.717	0.254	-1.378	-4.587	12.222
Just et al.	2023	289.774	15.72	–	–	–	–
Dias et al.	2021	289.777	15.714	0.224	-1.328	-4.534	–
Cantat-Gaudin et al.	2020	289.778	15.716	0.225	-1.336	-4.534	–
Sánchez et al.	2020	289.8	15.717	–	-1.346	-4.484	–
Cantat-Gaudin & Anders	2020	289.778	15.716	0.225	-1.336	-4.534	–
Soubiran et al.	2018	289.778	15.716	–	–	–	6.66
Bica et al.	2019	289.782	15.714	–	–	–	–
Cantat-Gaudin et al.	2018	289.778	15.716	0.225	-1.336	-4.534	–
Kharchenko et al.	2016	289.774	15.72	–	–	–	–
Dias et al.	2014	289.8	15.717	–	-0.63	-3.63	–
Kharchenko et al.	2013	289.78	15.722	–	0.12	-3.97	–
Dias et al.	2002	289.8	15.717	–	0.12	-3.97	–

💡 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
Almeida et al.	2025	3.51	3.05	–	553	–	1127	–	–
Hunt & Reffert	2024	–	–	–	–	–	2504*	–	–
Cavallo et al.	2024	3.02	3.99	–	245	-0.170	–	–	–
Hunt & Reffert	2023	3.70	3.63	1.79	229	–	–	–	–
Just et al.	2023	–	–	–	724	–	337	–	–
Dias et al.	2021	3.51	3.05	–	553	0.274	–	–	–
Cantat-Gaudin et al.	2020	3.33	2.88	–	617	–	–	–	–
Cantat-Gaudin & Anders	2020	3.94	–	–	–	–	–	–	–
Soubiran et al.	2018	3.94	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	3.94	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.36	3.23	–	724	–	–	–	–
Kharchenko et al.	2013	2.36	3.23	–	724	–	–	–	–
Dias et al.	2002	2.35	4.34	–	398	–	–	–	–

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

Visualization

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