UBC 1183

0.26 UTI

0.28

C_N

0.31

C_dens

0.5

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 28

Core radius and density 1.3 [pc], 1.5 [pc^-2]

C3 classification BB

C_N 0.28 Poorly populated
C_dens 0.31 Loose
C_C3 0.5 Intermediate quality
C_lit 0.1 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 1183 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely 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 High extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Data

🔍 Search references for UBC 1183 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–	352.65	62.06	0.387	-2.615	-0.792	-36.919
Yang et al.	2025	352.654	62.055	–	–	–	–
Hunt & Reffert	2024	352.654	62.055	0.381	-2.619	-0.791	-13.866
Cavallo et al.	2024	352.649	62.075	0.38	–	–	–
Hunt & Reffert	2023	352.654	62.055	0.381	-2.619	-0.791	-13.866
Castro-Ginard et al.	2022	352.64	62.08	0.38	-2.62	-0.79	-46.9

💡 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–	2.58	3.52	1.35	136	-0.090	365	–	–
Yang et al.	2025	–	–	–	135	-0.160⁽³⁾	–	–	–
Hunt & Reffert	2024	2.58	3.52	1.35	136	–	365⁽¹⁾	–	–
Cavallo et al.	2024	1.91	3.58	–	245	-0.020	–	–	–
Hunt & Reffert	2023	2.58	3.52	1.35	136	–	–	–	–
Castro-Ginard et al.	2022	2.81	2.55	–	492	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 69	89.3	352.65	62.06	0.38	-2.61	-0.78	-39.99	0.01

💡 Note: The % column shows the percentage of members that UBC 1183 shares with each listed object.

Visualization

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