HSC 534

0.13 UTI

0.0

C_N

0.16

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 0.8 [N/pc²]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.16 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 534 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a very close distance, above 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 parameter (see Parameters). It was recently reported in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very close Low extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G181, along with ASCC_100, Stephenson_1 and HSC_512.

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for HSC 534 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–	290.26	33.839	2.651	1.684	-3.139	-19.808
Zhang et al.	2024	290.154	34.147	–	–	–	–
Cavallo et al.	2024	290.365	33.837	2.673	–	–	–
Hunt & Reffert	2023	290.154	34.147	2.669	1.68	-3.251	-24.392

💡 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–	0.375	0.505	0.48	122	0.052	–	–	–
Zhang et al.	2024	–	–	–	–	-0.006⁽¹⁾	–	–	–
Cavallo et al.	2024	0.39	0.81	–	23	0.110	–	–	–
Hunt & Reffert	2023	0.36	0.20	0.48	220	–	–	–	–

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

Visualization

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