HSC 591

0.14 UTI

0.27

C_N

0.12

C_dens

0.25

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 2.1 [pc], 0.6 [pc^-2]

C3 classification DB

C_N 0.27 Poorly populated
C_dens 0.12 Very loose
C_C3 0.25 Low quality
C_lit 0.03 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 591 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-rich, intermediate-age cluster (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 distant High extinction Metal-rich Intermediate age

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.28 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.28 (50th percentile).

Data

🔍 Search references for HSC 591 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–	302.74	38.256	0.142	-2.509	-4.84	-31.235
Hunt & Reffert	2024	302.745	38.252	0.144	-2.513	-4.816	-31.683
Cavallo et al.	2024	302.749	38.252	0.146	–	–	–
Hunt & Reffert	2023	302.745	38.252	0.144	-2.513	-4.816	-31.683

💡 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–	6.21	3.43	2.24	112	0.530	752	–	–
Hunt & Reffert	2024	6.21	3.43	2.24	112	–	752⁽¹⁾	–	–
Cavallo et al.	2024	4.02	2.64	–	295	0.530	–	–	–
Hunt & Reffert	2023	6.21	3.43	2.24	112	–	–	–	–

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

Visualization

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