UBC 1120

0.11 UTI

0.0

C_N

0.05

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 4.0 [pc], 0.3 [pc^-2]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.38 Low 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 1120 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P208, along with CWNU_495.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for UBC 1120 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–	315.895	45.353	0.483	-2.521	-3.639	–
Hunt & Reffert	2024	315.99	45.381	0.484	-2.506	-3.617	–
Cavallo et al.	2024	315.89	45.325	0.482	–	–	–
Hunt & Reffert	2023	315.99	45.381	0.484	-2.506	-3.617	–
Castro-Ginard et al.	2022	315.88	45.3	0.48	-2.51	-3.63	–

💡 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–	2.05	1.605	1.49	54	0.420	110	–	–
Hunt & Reffert	2024	1.96	1.61	1.49	65	–	110⁽¹⁾	–	–
Cavallo et al.	2024	2.30	1.92	–	42	0.420	–	–	–
Hunt & Reffert	2023	1.96	1.60	1.49	65	–	–	–	–
Castro-Ginard et al.	2022	2.14	1.32	–	44	–	–	–	–

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

Visualization

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