HSC 2824

0.26 UTI

0.43

C_N

0.07

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 43

Core radius and density 3.5 [pc], 0.4 [pc^-2]

C3 classification AB

C_N 0.43 Poorly populated
C_dens 0.07 Very loose
C_C3 0.75 High 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 2824 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

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

Relatively close High extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G97, along with Theia_1891, NGC_6249 and Harvard_13.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.22 (50th percentile), false positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.22 (50th percentile), false positive? (human-assigned).

Data

🔍 Search references for HSC 2824 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–	255.237	-46.713	0.825	1.508	-3.799	-38.066
Hunt & Reffert	2024	255.206	-46.682	0.823	1.4	-3.854	-23.78
Cavallo et al.	2024	255.391	-47.064	0.825	–	–	–
Hunt & Reffert	2023	255.206	-46.682	0.823	1.4	-3.854	-23.78

💡 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–	1.15	3.17	2.75	23	0.230	166	–	–
Hunt & Reffert	2024	1.15	3.17	2.75	23	–	166⁽¹⁾	–	–
Cavallo et al.	2024	1.35	3.23	–	10	0.230	–	–	–
Hunt & Reffert	2023	1.15	3.17	2.75	23	–	–	–	–

(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 4183	44.2	255.22	-46.94	0.82	1.43	-3.82	-38.07	0.02

💡 Note: The % column shows the percentage of members that HSC 2824 shares with each listed object.

Visualization

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