UPK 524

0.65 UTI

0.75

C_N

0.31

C_dens

1.0

C_C3

0.6

C_lit

1.0

C_dup

N₅₀ (P>50% members) 100

Stellar density (N₅₀/rad) 1.5 [N/pc²]

C3 classification AA

C_N 0.75 Rich
C_dens 0.31 Loose
C_C3 1.0 Very high quality
C_lit 0.6 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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UPK 524 is a rich, loose object of very high C3 quality. Its parallax locates it at a 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 and metallicity parameters (see Parameters). It is moderately studied in the literature.

Close Low extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P459, along with HSC_2125.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for UPK 524 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–	105.352	-54.623	1.784	-2.723	8.619	26.651
Li et al.	2025	105.304	-54.432	1.765	-2.761	8.65	–
Alfonso et al.	2024	105.477	-55.19	1.796	-2.758	8.642	–
Cavallo et al.	2024	105.618	-54.531	1.793	–	–	–
Hunt & Reffert	2023	105.183	-55.242	1.79	-2.784	8.647	24.376
Almeida et al.	2023	105.729	-54.475	–	–	–	–
Tarricq et al.	2022	106.32	-55.007	1.827	-2.714	8.655	–
Dias et al.	2021	105.44	-54.47	1.77	-2.759	8.682	28.21
Spina et al.	2021	105.409	-54.151	1.762	-2.793	8.659	–
Cantat-Gaudin et al.	2020	105.304	-54.432	1.765	-2.761	8.65	–
Cantat-Gaudin & Anders	2020	105.369	-54.489	1.789	-2.753	8.736	–
Sim et al.	2019	105.167	-54.844	–	-2.77	8.81	–

💡 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–	0.55	0.3	0.67	118	-0.088	273	0.63	–
Li et al.	2025	0.52	0.33	–	88	-0.340	–	–	–
Alfonso et al.	2024	0.57	0.30	–	122	-0.091	–	–	–
Cavallo et al.	2024	0.56	0.30	–	170	0.540	–	–	–
Hunt & Reffert	2023	0.52	0.17	0.67	118	–	–	–	–
Almeida et al.	2023	0.55	0.28	–	439	-0.085	273⁽¹⁾	0.63	–
Tarricq et al.	2022	0.56	–	–	117	–	–	–	–
Dias et al.	2021	0.54	0.36	–	144	-0.091	–	–	–
Spina et al.	2021	0.57	–	–	107	-0.049⁽²⁰⁾	–	–	–
Cantat-Gaudin et al.	2020	0.57	0.30	–	107	–	–	–	–
Cantat-Gaudin & Anders	2020	0.55	–	–	–	–	–	–	–
Sim et al.	2019	0.55	–	–	100	–	–	–	–

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

Visualization

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