UBC 146

0.68 UTI

0.81

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 248

Stellar density (N₅₀/rad) 19.7 [N/pc²]

C3 classification AA

C_N 0.81 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very 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 146 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.

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

Relatively close Moderate extinction Massive Near-solar metallicity Young

Palma et al. (2025)
Classified as optical pair P596, along with UBC_148.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 146 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–	309.368	46.471	0.435	-4.034	-4.326	-10.874
Hunt & Reffert	2024	309.357	46.473	0.433	-4.031	-4.323	-4.032
Cavallo et al.	2024	309.388	46.478	0.435	–	–	–
Hunt & Reffert	2023	309.357	46.473	0.433	-4.031	-4.323	-4.032
Cantat-Gaudin et al.	2020	309.368	46.467	0.423	-4.047	-4.325	–
Castro-Ginard et al.	2020	309.377	46.477	0.422	-4.036	-4.328	–

💡 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–	2.33	2.03	2.69	68	0.430	1410	–	–
Hunt & Reffert	2024	–	–	–	–	–	1410⁽¹⁾	–	–
Cavallo et al.	2024	2.33	2.18	–	138	0.430	–	–	–
Hunt & Reffert	2023	2.13	2.03	2.69	68	–	–	–	–
Cantat-Gaudin et al.	2020	2.51	1.46	–	44	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 3018	92.7	309.37	46.47	0.44	-4.03	-4.33	-5.88	0.02

💡 Note: The % column shows the percentage of members that UBC 146 shares with each listed object.

Visualization

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