UBC 441

0.40 UTI

0.65

C_N

0.29

C_dens

0.75

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 80

Core radius and density 2.2 [pc], 1.4 [pc^-2]

C3 classification AB

C_N 0.65 Moderately populated
C_dens 0.29 Loose
C_C3 0.75 High quality
C_lit 0.16 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 441 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low 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 rarely studied in the literature.

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

Relatively close Low extinction Near-solar metallicity Intermediate age

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 441 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–	99.984	-3.632	0.477	0.085	-0.411	24.665
Zhang et al.	2024	100.022	-3.618	–	–	–	–
Hunt & Reffert	2024	100.022	-3.618	0.471	0.076	-0.428	26.567
Cavallo et al.	2024	99.974	-3.646	0.475	–	–	–
Hunt & Reffert	2023	100.022	-3.618	0.471	0.076	-0.428	26.567
Cantat-Gaudin et al.	2020	99.998	-3.613	0.471	0.123	-0.443	–
Castro-Ginard et al.	2020	99.989	-3.613	0.472	0.12	-0.458	–

💡 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–	1.9	0.89	0.43	177	-0.041	427	–	–
Zhang et al.	2024	–	–	–	–	-0.361⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.90	0.89	0.43	177	–	427⁽¹⁾	–	–
Cavallo et al.	2024	1.98	1.08	–	224	0.280	–	–	–
Hunt & Reffert	2023	1.90	0.89	0.43	177	–	–	–	–
Cantat-Gaudin et al.	2020	2.00	0.84	–	174	–	–	–	–
Kounkel et al.	2020	1.80	1.60	–	60	–	–	–	–

(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 128	76.2	99.98	-3.64	0.48	0.08	-0.43	19.67	0.01
LISC 3106	70.0	100.0	-3.64	0.48	0.09	-0.42	24.66	0.0

💡 Note: The % column shows the percentage of members that UBC 441 shares with each listed object.

Visualization

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