UBC 425

0.26 UTI

0.0

C_N

0.09

C_dens

0.75

C_C3

0.23

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.2 [pc], 0.5 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.09 Very loose
C_C3 0.75 High quality
C_lit 0.23 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 425 is a sparse, very loose 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, young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is rarely studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for UBC 425 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–	59.247	48.622	0.326	0.782	-1.421	–
Almeida et al.	2025	59.219	48.609	–	–	–	–
Zhang et al.	2024	59.206	48.648	–	–	–	–
Hunt & Reffert	2024	59.206	48.648	0.345	0.803	-1.447	–
Cavallo et al.	2024	59.23	48.628	0.345	–	–	–
Hunt & Reffert	2023	59.206	48.648	0.345	0.803	-1.447	–
Dias et al.	2021	59.219	48.609	0.299	0.802	-1.374	–
Cantat-Gaudin et al.	2020	59.236	48.622	0.318	0.79	-1.392	–
Castro-Ginard et al.	2020	59.227	48.602	0.316	0.812	-1.366	–

💡 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–	2.69	2.5	0.77	69	-0.106	295	–	–
Almeida et al.	2025	2.69	2.60	–	11	–	224	–	–
Zhang et al.	2024	–	–	–	–	-0.204⁽¹⁾	–	–	–
Hunt & Reffert	2024	2.67	2.50	0.77	78	–	366⁽¹⁾	–	–
Cavallo et al.	2024	2.94	2.57	–	69	0.480	–	–	–
Hunt & Reffert	2023	2.67	2.50	0.77	78	–	–	–	–
Dias et al.	2021	2.69	2.60	–	11	-0.106	–	–	–
Cantat-Gaudin et al.	2020	3.08	2.29	–	85	–	–	–	–
Kounkel et al.	2020	3.15	2.22	–	55	–	–	–	–

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

Visualization

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