VDBH 121

(vdB-Hagen 121; van den Bergh-Hagen 121; vdBergh-Hagen 121; MWSC 1960; BH 121)

0.71 UTI

0.9

C_N

0.69

C_dens

1.0

C_C3

0.48

C_lit

1.0

C_dup

N_m (P>50%) 492

Core radius and density 4.5 [pc], 3.5 [pc^-2]

C3 classification AA

C_N 0.9 Very rich
C_dens 0.69 Moderately dense
C_C3 1.0 Very high quality
C_lit 0.48 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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VDBH 121 is a very rich, moderately dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It is poorly studied in the literature.

Note: This object shares a moderate percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Very young

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

Hu et al. (2021)
Ellipticities (core, all): e_core=0.4874, e_all=0.1171.

Piecka & Paunzen (2021)
Belongs to cluster aggregate 'Agg09' along with IC 2948 and Ruprecht 94.

Data

🔍 Search references for VDBH 121 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–	174.695	-63.401	0.398	-6.012	0.65	0.021
Almeida et al.	2025	174.663	-63.377	–	–	–	–
Celli et al.	2024	174.661	-63.387	–	–	–	–
Just et al.	2023	174.518	-63.335	–	–	–	–
Dias et al.	2021	174.663	-63.377	0.389	-6.011	0.637	–
Cantat-Gaudin et al.	2020	174.661	-63.387	0.387	-6.0	0.63	–
Cantat-Gaudin & Anders	2020	174.661	-63.387	0.387	-6.0	0.63	–
Cantat-Gaudin et al.	2018	174.661	-63.387	0.387	-6.0	0.63	–
Kharchenko et al.	2016	174.518	-63.335	–	–	–	–
Kharchenko et al.	2013	174.525	-63.338	–	-5.86	0.52	-3.8
Piskunov et al.	2008	174.521	-63.329	–	–	–	–
Kharchenko et al.	2007	174.52	-63.33	–	0.25	–	-3.76
Piskunov et al.	2007	174.521	-63.329	–	–	–	–
Kharchenko et al.	2005	174.52	-63.33	–	-5.12	1.05	-3.76
Kharchenko et al.	2003	174.55	-63.35	–	-6.09	0.97	–
Lynga	1987	174.536	-63.342	–	–	–	–
van den Bergh & Hagen	1975	173.95	-63.067	–	–	–	–

💡 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–	2.405	1.195	–	4	-0.089	1337	–	–
Almeida et al.	2025	2.25	1.28	–	7	–	1285	–	–
Celli et al.	2024	–	–	–	3	–	1252	–	–
Just et al.	2023	–	–	–	4	–	1337	–	–
Dias et al.	2021	2.25	1.28	–	7	-0.089	–	–	–
Cantat-Gaudin et al.	2020	2.41	1.11	–	3	–	–	–	–
Kounkel et al.	2020	2.30	1.63	–	7	–	–	–	–
Cantat-Gaudin & Anders	2020	2.40	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.40	–	–	–	–	–	–	–
Kharchenko et al.	2016	2.94	1.58	–	4	–	–	–	–
Kharchenko et al.	2013	2.94	1.58	–	4	–	–	–	–
Piskunov et al.	2008	2.73	0.91	–	4	–	7311⁽¹⁾	–	–
Piskunov et al.	2007	2.73	0.91	–	4	–	1476	–	–
Kharchenko et al.	2005	2.73	0.91	–	4	–	–	–	–
Kharchenko et al.	2003	1.25	0.79	–	–	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
IC 2948	38.6	174.88	-63.46	0.4	-5.95	0.65	-11.68	0.75
IC 2944	21.5	174.56	-63.37	0.39	-6.09	0.66	0.02	0.0
VVV 005	7.5	174.74	-63.47	0.4	-5.95	0.51	-45.44	0.0
CWWDL 864	2.4	174.28	-63.27	0.39	-6.15	0.9	4.55	0.2

💡 Note: The % column shows the percentage of members that VDBH 121 shares with each listed object.

Visualization

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