HSC 589

0.19 UTI

0.27

C_N

0.17

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 2.2 [pc], 0.8 [pc^-2]

C3 classification DA

C_N 0.27 Poorly populated
C_dens 0.17 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 589 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a young 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.

Distant Moderate extinction Young

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.55 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.55 (50th percentile).

Data

🔍 Search references for HSC 589 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–	303.276	37.785	0.262	-3.65	-6.354	-15.722
Hunt & Reffert	2024	303.275	37.788	0.274	-3.672	-6.348	–
Hunt & Reffert	2023	303.275	37.788	0.274	-3.672	-6.348	–

💡 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–	3.51	2.93	1.24	29	–	262	–	–
Hunt & Reffert	2024	3.51	2.93	1.24	29	–	262⁽¹⁾	–	–
Hunt & Reffert	2023	3.51	2.93	1.24	29	–	–	–	–

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

Visualization

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