VDBH 84

(van den Bergh-Hagen 84; BH 84; vdBergh-Hagen 84; MWSC 1743)

0.79 UTI

0.77

C_N

1.0

C_dens

0.75

C_C3

0.71

C_lit

1.0

C_dup

N_m (P>50%) 146

Core radius and density 1.1 [pc], 12 [pc^-2]

C3 classification AB

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.71 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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VDBH 84 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, below 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 age, metallicity, and mass parameters (see Parameters). It is moderately studied in the literature.

Distant Moderate extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P273, along with Theia_2121.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.73 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.73 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1182, e_all=0.0639.

Data

🔍 Search references for VDBH 84 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–	150.33	-58.218	0.224	-4.856	3.316	18.383
Hu & Soubiran	2025	150.354	-58.22	–	–	–	–
Almeida et al.	2025	150.34	-58.217	–	–	–	–
Hunt & Reffert	2024	150.331	-58.224	0.23	-4.877	3.329	18.373
Cavallo et al.	2024	150.354	-58.22	0.228	–	–	–
Hunt & Reffert	2023	150.331	-58.224	0.23	-4.877	3.329	18.373
Just et al.	2023	150.331	-58.212	–	–	–	–
Dias et al.	2021	150.34	-58.217	0.184	-4.827	3.285	–
Cantat-Gaudin et al.	2020	150.331	-58.218	0.2	-4.848	3.289	–
Cantat-Gaudin & Anders	2020	150.331	-58.218	0.2	-4.848	3.289	–
Soubiran et al.	2018	150.331	-58.218	–	–	–	15.58
Cantat-Gaudin et al.	2018	150.331	-58.218	0.2	-4.848	3.289	–
Dias et al.	2018	–	–	–	-5.47	2.27	–
Dib et al.	2018	150.337	-58.215	–	–	–	–
Sampedro et al.	2017	150.329	-58.217	–	-6.07	3.01	–
Joshi et al.	2016	150.337	-58.215	–	–	–	–
Kharchenko et al.	2016	150.331	-58.212	–	–	–	–
Dias et al.	2014	150.329	-58.217	–	-6.15	4.04	–
Kharchenko et al.	2013	150.337	-58.215	–	-4.35	5.32	–
Bukowiecki et al.	2011	150.317	-58.211	–	–	–	–
Dias et al.	2002	150.329	-58.217	–	-6.3	4.08	–
Lynga	1987	150.401	-58.174	–	–	–	–
van den Bergh & Hagen	1975	149.975	-57.933	–	–	–	–

💡 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–	3.5	1.91	2.24	148	0.205	698	–	–
Hu & Soubiran	2025	–	–	–	–	-0.380⁽⁵⁾	–	–	–
Almeida et al.	2025	2.40	1.69	–	1125	–	428	–	–
Hunt & Reffert	2024	3.80	2.75	2.24	161	–	1071⁽¹⁾	–	–
Cavallo et al.	2024	3.63	2.58	–	603	0.300	–	–	–
Hunt & Reffert	2023	3.80	2.75	2.24	161	–	–	–	–
Just et al.	2023	–	–	–	50	–	16	–	–
Dias et al.	2021	2.40	1.69	–	1125	0.205	–	–	–
Cantat-Gaudin et al.	2020	4.45	2.09	–	135	–	–	–	–
Kounkel et al.	2020	4.23	2.76	–	182	–	–	–	–
Cantat-Gaudin & Anders	2020	4.38	–	–	–	–	–	–	–
Soubiran et al.	2018	4.38	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.38	–	–	–	–	–	–	–
Dib et al.	2018	1.28	–	–	50	–	–	–	–
Joshi et al.	2016	1.28	1.58	–	50	–	–	–	–
Kharchenko et al.	2016	1.28	1.58	–	50	–	–	–	–
Kharchenko et al.	2013	1.28	1.58	–	50	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	967	–	–
Bukowiecki et al.	2011	2.94⁽¹⁾	1.83	–	18	–	–	–	–
Dias et al.	2002	3.37	1.99	–	562	–	–	–	–

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

Visualization

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