UBC 54

0.76 UTI

0.83

C_N

1.0

C_dens

0.75

C_C3

0.6

C_lit

1.0

C_dup

N₅₀ (P>50% members) 324

Stellar density (N₅₀/rad) 16.2 [N/pc²]

C3 classification AB

C_N 0.83 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.6 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 54 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near 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 metallicity parameter (see Parameters). It is moderately studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G74, along with LP_2139 and HSC_1255.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 54 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–	64.706	46.453	0.903	3.265	-3.808	-18.994
Li et al.	2025	64.747	46.453	0.879	3.32	-3.758	–
Wei et al.	2025	64.751	46.445	0.91	3.259	-3.813	–
Zhang et al.	2024	64.725	46.415	–	–	–	–
Hunt & Reffert	2024	64.725	46.415	0.908	3.275	-3.809	-20.361
Cavallo et al.	2024	64.714	46.453	0.908	–	–	–
Hunt & Reffert	2023	64.725	46.415	0.908	3.275	-3.809	-20.361
He et al.	2022	64.72	46.438	0.914	3.269	-3.8	–
Tarricq et al.	2022	64.807	46.443	0.907	3.264	-3.809	–
Cantat-Gaudin et al.	2020	64.747	46.453	0.879	3.32	-3.758	–
Cantat-Gaudin & Anders	2020	64.747	46.453	0.879	3.32	-3.758	–
Castro-Ginard et al.	2019	64.721	46.439	0.878	3.325	-3.79	–

💡 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–	1.1	1.095	0.82	288	0.097	694	0.36	–
Li et al.	2025	1.00	1.05	–	413	-0.056	–	–	–
Wei et al.	2025	1.76	1.23	–	288	0.250	430	0.36	–
Zhang et al.	2024	–	–	–	–	-0.132⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	957⁽¹⁾	–	–
Cavallo et al.	2024	1.15	1.14	–	372	0.320	–	–	–
Hunt & Reffert	2023	1.04	0.97	0.82	280	–	–	–	–
He et al.	2022	–	1.25	–	224	–	–	–	–
Tarricq et al.	2022	1.07	–	–	295	–	–	–	–
Cantat-Gaudin et al.	2020	1.11	0.98	–	251	–	–	–	–
Cantat-Gaudin & Anders	2020	1.10	–	–	–	–	–	–	–

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

Visualization

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