UBC 239

0.67 UTI

0.74

C_N

1.0

C_dens

0.75

C_C3

0.44

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 99

Radius (P>50% members) 6.4 [arcmin]

C_N 0.74 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.44 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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UBC 239 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

Relatively close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 239 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	–	123.753	-30.16	0.476	-3.617	1.946	34.429
Li et al.	2025	123.763	-30.155	0.467	-3.623	1.947	–
Hu & Soubiran	2025	123.757	-30.158	–	–	–	–
Hunt & Reffert	2024	123.76	-30.165	0.477	-3.605	1.953	41.947
Cavallo et al.	2024	123.756	-30.158	0.477	–	–	–
Hunt & Reffert	2023	123.76	-30.165	0.477	-3.605	1.953	41.947
Cantat-Gaudin et al.	2020	123.763	-30.155	0.467	-3.623	1.947	–
Castro-Ginard et al.	2020	123.76	-30.147	0.472	-3.63	1.95	–

💡 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]	Bfr	BSS
Li et al.	2025	1.79	0.40	–	495	-0.232	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.140*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	380*	–	–
Cavallo et al.	2024	1.78	0.38	–	631	-0.300	–	–	–
Hunt & Reffert	2023	1.89	0.13	0.39	706	–	–	–	–
Cantat-Gaudin et al.	2020	2.15	0.19	–	275	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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