UBC 1553

0.45 UTI

0.42

C_N

0.47

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 42

Stellar density (N₅₀/rad) 2.4 [N/pc²]

C3 classification BA

C_N 0.42 Poorly populated
C_dens 0.47 Loose
C_C3 0.75 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 1553 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, 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.

Distant High extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 1553 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–	248.888	-45.646	0.289	-1.843	-2.299	-64.945
Hu & Soubiran	2025	248.882	-45.65	–	–	–	–
Hunt & Reffert	2024	248.882	-45.646	0.272	-1.85	-2.322	-65.899
Cavallo et al.	2024	248.882	-45.65	0.273	–	–	–
Hunt & Reffert	2023	248.882	-45.646	0.272	-1.85	-2.322	-65.899
Castro-Ginard et al.	2022	248.87	-45.64	0.27	-1.84	-2.3	-78.25

💡 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–	3.4	3.4	2.24	589	-0.160	1200	–	–
Hu & Soubiran	2025	–	–	–	–	-0.090⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1200⁽¹⁾	–	–
Cavallo et al.	2024	2.33	3.40	–	589	-0.230	–	–	–
Hunt & Reffert	2023	3.40	3.77	2.24	121	–	–	–	–
Castro-Ginard et al.	2022	3.89	2.33	–	759	–	–	–	–

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

Visualization

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