HSC 224

0.16 UTI

0.0

C_N

0.16

C_dens

0.75

C_C3

0.0

C_lit

0.88

C_dup

N₅₀ (P>50% members) 17

Stellar density (N₅₀/rad) 0.8 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.16 Very loose
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.88 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 224 is a sparse, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.88) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G56, along with CWNU_2666 and OC_0038.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 224 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–	280.244	-11.76	0.558	0.67	-0.71	–
Hunt & Reffert	2024	280.229	-11.804	0.552	0.662	-0.761	-7.752
Cavallo et al.	2024	280.421	-11.514	0.555	–	–	–
Hunt & Reffert	2023	280.229	-11.804	0.552	0.662	-0.761	-7.752

💡 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–	1.84	2.09	2.46	57	0.480	147	–	–
Hunt & Reffert	2024	–	–	–	–	–	147⁽¹⁾	–	–
Cavallo et al.	2024	2.00	2.21	–	50	0.480	–	–	–
Hunt & Reffert	2023	1.68	1.97	2.46	64	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 2722	12.0	280.56	-11.33	0.56	0.66	-0.82	13.85	0.25

💡 Note: The % column shows the percentage of members that HSC 224 shares with each listed object.

Visualization

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