UBC 1428

0.23 UTI

0.29

C_N

0.11

C_dens

0.62

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 29

Core radius and density 1.9 [pc], 0.5 [pc^-2]

C3 classification AC

C_N 0.29 Poorly populated
C_dens 0.11 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.06 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 1428 is a poorly populated, very loose object of intermediate 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 (see Parameters). It is rarely studied in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

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 1428 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–	113.374	-38.393	0.435	-1.99	3.185	13.239
Hunt & Reffert	2024	113.409	-38.385	0.435	-1.986	3.218	13.244
Cavallo et al.	2024	113.35	-38.411	0.435	–	–	–
Hunt & Reffert	2023	113.409	-38.385	0.435	-1.986	3.218	13.244
Castro-Ginard et al.	2022	113.35	-38.4	0.43	-1.98	3.21	–

💡 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–	2.23	0.93	1.08	316	0.010	98	–	–
Hunt & Reffert	2024	2.19	0.93	1.08	316	–	98⁽¹⁾	–	–
Cavallo et al.	2024	2.27	1.57	–	457	0.010	–	–	–
Hunt & Reffert	2023	2.19	0.93	1.08	316	–	–	–	–
Castro-Ginard et al.	2022	2.46	0.82	–	171	–	–	–	–

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

Visualization

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