UBC 427

0.66 UTI

0.68

C_N

1.0

C_dens

0.75

C_C3

0.45

C_lit

1.0

C_dup

N₅₀ (P>50% members) 85

Stellar density (N₅₀/rad) 5.3 [N/pc²]

C3 classification AB

C_N 0.68 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.45 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 427 is a moderately populated, very dense object of high 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.

Note: This object shares a moderate percentage of members with 2 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 427 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–	71.786	49.035	0.341	0.953	-2.256	-18.456
Li et al.	2025	71.783	49.035	0.289	0.999	-2.21	–
Hu & Soubiran	2025	71.783	49.027	–	–	–	–
Zhang et al.	2024	71.795	49.027	–	–	–	–
Hunt & Reffert	2024	71.795	49.027	0.334	0.932	-2.261	-11.504
Cavallo et al.	2024	71.783	49.027	0.337	–	–	–
Hunt & Reffert	2023	71.795	49.027	0.334	0.932	-2.261	-11.504
Cantat-Gaudin et al.	2020	71.783	49.035	0.289	0.999	-2.21	–
Castro-Ginard et al.	2020	71.786	49.02	0.283	1.003	-2.211	–

💡 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–	2.745	1.67	1.55	538	0.035	530	–	–
Li et al.	2025	2.84	1.74	–	381	0.251	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.110⁽⁵⁾	–	–	–
Zhang et al.	2024	–	–	–	–	0.180⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	530⁽¹⁾	–	–
Cavallo et al.	2024	2.22	1.69	–	692	-0.180	–	–	–
Hunt & Reffert	2023	2.65	1.65	1.55	473	–	–	–	–
Cantat-Gaudin et al.	2020	3.13	1.22	–	603	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0275	30.6	71.8	49.02	0.35	0.96	-2.29	-19.12	0.0
CWWDL 2950	16.5	71.77	49.05	0.34	0.87	-2.06	-26.73	0.05

💡 Note: The % column shows the percentage of members that UBC 427 shares with each listed object.

Visualization

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