UBC 181

0.56 UTI

0.47

C_N

1.0

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 47

Stellar density (N₅₀/rad) 8.9 [N/pc²]

C3 classification AB

C_N 0.47 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.3 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 181 is a poorly populated, 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 (see Parameters). It is poorly studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Data

🔍 Search references for UBC 181 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–	0.585	63.568	0.885	-2.604	-1.414	-43.1
Li et al.	2025	0.584	63.562	0.858	-2.602	-1.344	–
He et al.	2022	0.438	63.565	0.899	-2.604	-1.417	–
Tarricq et al.	2022	0.526	63.546	0.878	-2.609	-1.403	–
Cantat-Gaudin et al.	2020	0.584	63.562	0.858	-2.602	-1.344	–
Castro-Ginard et al.	2020	0.584	63.564	0.858	-2.594	-1.342	–

💡 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–	1.09	1.22	–	718	-0.067	–	–	–
Li et al.	2025	1.03	1.22	–	809	-0.067	–	–	–
He et al.	2022	–	1.65	–	447	–	–	–	–
Tarricq et al.	2022	1.09	–	–	759	–	–	–	–
Cantat-Gaudin et al.	2020	1.12	1.08	–	676	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Theia 4310	70.2	0.55	63.55	0.89	-2.61	-1.42	-43.3	0.0

💡 Note: The % column shows the percentage of members that UBC 181 shares with each listed object.

Visualization

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