UBC 573

0.58 UTI

0.4

C_N

1.0

C_dens

0.75

C_C3

0.38

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 40

Radius (P>50% members) 5.3 [arcmin]

C_N 0.4 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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UBC 573 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above 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 metallicity parameter (see Parameters). It is poorly studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Dias et al. (2021)
Dubious open cluster.

Data

🔍 Search references for UBC 573 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	–	274.994	-9.464	0.568	-0.133	-4.48	-26.803
Li et al.	2025	275.017	-9.46	0.532	-0.179	-4.474	–
Hunt & Reffert	2024	275.029	-9.477	0.575	-0.151	-4.48	-13.362
Cavallo et al.	2024	275.015	-9.452	0.569	–	–	–
Hunt & Reffert	2023	275.029	-9.477	0.575	-0.151	-4.48	-13.362
Cantat-Gaudin et al.	2020	275.017	-9.46	0.532	-0.179	-4.474	–
Castro-Ginard et al.	2020	275.012	-9.444	0.532	-0.182	-4.484	–

💡 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	1.14	2.69	–	511	-0.126	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	466*	–	–
Cavallo et al.	2024	1.56	3.10	–	186	0.270	–	–	–
Hunt & Reffert	2023	1.63	3.28	2.35	51	–	–	–	–
Cantat-Gaudin et al.	2020	1.73	1.95	–	437	–	–	–	–

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

Visualization

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