HSC 1824

0.17 UTI

0.41

C_N

0.07

C_dens

0.25

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 41

Core radius and density 3.1 [pc], 0.3 [pc^-2]

C3 classification CC

C_N 0.41 Poorly populated
C_dens 0.07 Very loose
C_C3 0.25 Low quality
C_lit 0.06 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 1824 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

⚠️ 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 Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.32 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.32 (50th percentile).

Data

🔍 Search references for HSC 1824 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–	115.924	-13.356	0.204	-1.916	-1.001	55.523
Hu & Soubiran	2025	115.943	-13.373	–	–	–	–
Hunt & Reffert	2024	115.909	-13.33	0.198	-1.911	-0.956	56.358
Cavallo et al.	2024	115.943	-13.373	0.204	–	–	–
Hunt & Reffert	2023	115.909	-13.33	0.198	-1.911	-0.956	56.358

💡 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–	4.09	1.2	1.205	1504	-0.315	227	–	–
Hu & Soubiran	2025	–	–	–	–	-0.200⁽⁵⁾	–	–	–
Hunt & Reffert	2024	4.09	1.20	1.20	1504	–	227⁽¹⁾	–	–
Cavallo et al.	2024	3.98	1.14	–	2951	-0.430	–	–	–
Hunt & Reffert	2023	4.09	1.20	1.21	1503	–	–	–	–

(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 3226	85.4	115.92	-13.34	0.2	-1.92	-1.0	55.52	0.0

💡 Note: The % column shows the percentage of members that HSC 1824 shares with each listed object.

Visualization

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