HSC 566

0.24 UTI

0.27

C_N

0.35

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 1.0 [pc], 1.8 [pc^-2]

C3 classification BB

C_N 0.27 Poorly populated
C_dens 0.35 Loose
C_C3 0.5 Intermediate 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 566 is a poorly populated, 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 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.

Distant Moderate extinction Metal-rich Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.14 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.14 (50th percentile).

Data

🔍 Search references for HSC 566 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–	299.705	35.524	0.206	-2.611	-5.677	–
Hunt & Reffert	2024	299.704	35.529	0.201	-2.595	-5.673	-8.255
Cavallo et al.	2024	299.722	35.525	0.203	–	–	–
Hunt & Reffert	2023	299.704	35.529	0.201	-2.595	-5.673	-8.255

💡 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–	4.72	2.6	2.08	143	0.780	581	–	–
Hunt & Reffert	2024	4.72	2.60	2.08	143	–	581⁽¹⁾	–	–
Cavallo et al.	2024	4.25	2.34	–	214	0.780	–	–	–
Hunt & Reffert	2023	4.72	2.60	2.08	143	–	–	–	–

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

Visualization

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