UBC 52

0.37 UTI

0.46

C_N

0.2

C_dens

0.5

C_C3

0.35

C_lit

1.0

C_dup

N_m (P>50%) 46

Core radius and density 2.5 [pc], 1.0 [pc^-2]

C3 classification BB

C_N 0.46 Poorly populated
C_dens 0.2 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.35 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 52 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above 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 poorly studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.548, e_all=0.3231.

Data

🔍 Search references for UBC 52 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–	64.742	52.36	0.428	-0.833	0.584	-33.226
Hu & Soubiran	2025	64.756	52.364	–	–	–	–
Yang et al.	2025	64.793	52.332	–	–	–	–
Almeida et al.	2025	64.729	52.37	–	–	–	–
Zhang et al.	2024	64.793	52.332	–	–	–	–
Hunt & Reffert	2024	64.793	52.332	0.431	-0.843	0.574	-42.463
Cavallo et al.	2024	64.756	52.364	0.431	–	–	–
Hunt & Reffert	2023	64.793	52.332	0.431	-0.843	0.574	-42.463
Jadhav & Subramaniam	2021	64.728	52.344	–	–	–	–
Dias et al.	2021	64.729	52.37	0.387	-0.829	0.591	-29.962
Cantat-Gaudin et al.	2020	64.728	52.344	0.401	-0.868	0.616	–
Cantat-Gaudin & Anders	2020	64.728	52.344	0.401	-0.868	0.616	–
Castro-Ginard et al.	2019	64.741	52.373	0.412	-0.856	0.58	–

💡 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–	2.2	1.81	0.93	755	-0.090	281	–	0
Hu & Soubiran	2025	–	–	–	–	-0.200⁽⁵⁾	–	–	–
Yang et al.	2025	–	–	–	759	-0.070⁽³⁾	–	–	–
Almeida et al.	2025	2.08	2.15	–	622	–	217	–	–
Zhang et al.	2024	–	–	–	–	-0.279⁽¹⁾	–	–	–
Hunt & Reffert	2024	2.14	1.78	0.93	754	–	281⁽¹⁾	–	–
Cavallo et al.	2024	2.20	1.84	–	832	0.420	–	–	–
Hunt & Reffert	2023	2.14	1.78	0.93	755	–	–	–	–
Jadhav & Subramaniam	2021	2.22	1.56	–	1023	–	296	–	0⁽¹⁾
Dias et al.	2021	2.08	2.15	–	622	-0.090	–	–	–
Cantat-Gaudin et al.	2020	2.22	1.56	–	1023	–	–	–	–
Kounkel et al.	2020	2.26	2.66	–	562	–	–	–	–
Cantat-Gaudin & Anders	2020	2.32	–	–	–	–	–	–	–

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

Visualization

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