UBC 1591

0.58 UTI

0.3

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 30

Stellar density (N₅₀/rad) 6.7 [N/pc²]

C3 classification AA

C_N 0.3 Poorly populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.3 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 1591 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 1591 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–	204.024	-64.654	0.399	-5.415	-2.07	–
Hu & Soubiran	2025	204.057	-64.641	–	–	–	–
Hunt & Reffert	2024	204.054	-64.646	0.405	-5.412	-2.046	-39.231
Cavallo et al.	2024	204.057	-64.641	0.403	–	–	–
Hunt & Reffert	2023	204.054	-64.646	0.405	-5.412	-2.046	-39.231
Castro-Ginard et al.	2022	204.01	-64.67	0.4	-5.41	-2.08	–

💡 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–	2.26	1.68	1.37	385	-0.065	405	–	–
Hu & Soubiran	2025	–	–	–	–	-0.270⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	405⁽¹⁾	–	–
Cavallo et al.	2024	2.06	1.70	–	661	0.140	–	–	–
Hunt & Reffert	2023	2.26	1.68	1.37	385	–	–	–	–
Castro-Ginard et al.	2022	2.71	1.22	–	170	–	–	–	–

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

Visualization

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