UBC 183

(LISC 3407)

0.53 UTI

0.67

C_N

0.38

C_dens

1.0

C_C3

0.29

C_lit

1.0

C_dup

N_m (P>50%) 84

Core radius and density 2.0 [pc], 1.9 [pc^-2]

C3 classification AA

C_N 0.67 Moderately populated
C_dens 0.38 Loose
C_C3 1.0 Very high quality
C_lit 0.29 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 183 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a relatively close 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 age parameter (see Parameters). It is poorly studied in the literature.

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 183 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–	5.037	55.71	0.915	0.69	-2.576	-19.285
Li et al.	2025	5.005	55.714	0.934	0.661	-2.507	–
Zhang et al.	2024	5.032	55.733	–	–	–	–
Hunt & Reffert	2024	5.032	55.733	0.91	0.702	-2.597	-21.238
Cavallo et al.	2024	5.007	55.697	0.913	–	–	–
Hunt & Reffert	2023	5.032	55.733	0.91	0.702	-2.597	-21.238
He et al.	2022	5.065	55.721	0.912	0.694	-2.568	–
Tarricq et al.	2022	5.007	55.735	0.92	0.662	-2.565	–
Cantat-Gaudin et al.	2020	5.005	55.714	0.934	0.661	-2.507	–
Castro-Ginard et al.	2020	5.001	55.699	0.932	0.669	-2.501	–

💡 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–	1.015	0.66	0.67	126	-0.100	206	–	–
Li et al.	2025	1.01	0.72	–	126	-0.041	–	–	–
Zhang et al.	2024	–	–	–	–	-0.166⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.05	0.60	0.67	126	–	206⁽¹⁾	–	–
Cavallo et al.	2024	0.92	0.59	–	417	-0.100	–	–	–
Hunt & Reffert	2023	1.05	0.60	0.67	126	–	–	–	–
Deng & Li	2023	0.93	0.97	–	0	-0.100	–	–	–
He et al.	2022	–	0.90	–	79	–	–	–	–
Tarricq et al.	2022	1.02	–	–	68	–	–	–	–
Cantat-Gaudin et al.	2020	1.05	0.37	–	66	–	–	–	–
Kounkel et al.	2020	0.98	1.04	–	155	–	–	–	–

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

Visualization

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