HSC 2304

0.11 UTI

0.74

C_N

0.41

C_dens

0.75

C_C3

0.06

C_lit

0.27

C_dup

N_m (P>50%) 97

Core radius and density 1.7 [pc], 2.0 [pc^-2]

C3 classification AB

C_N 0.74 Moderately populated
C_dens 0.41 Loose
C_C3 0.75 High quality
C_lit 0.06 Rarely studied
C_dup 0.27 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 2304 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Intermediate age

Yan et al. (2026)
Number of WDs: expected from single-star evolution N=6, with probability of formation through binary evolution >=0.5 N=0.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for HSC 2304 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–	147.326	-60.149	0.903	-7.072	4.131	-0.464
Yan et al.	2026	147.315	-60.184	0.899	-7.092	4.119	–
Hunt & Reffert	2024	147.315	-60.184	0.899	-7.092	4.119	-4.461
Cavallo et al.	2024	147.358	-60.11	0.901	–	–	–
Hunt & Reffert	2023	147.315	-60.184	0.899	-7.092	4.119	-4.461

💡 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–	1.06	0.2	0.39	187	-0.070	182	–	–
Yan et al.	2026	–	–	–	186	–	–	–	–
Hunt & Reffert	2024	1.06	0.20	0.39	187	–	182⁽¹⁾	–	–
Cavallo et al.	2024	1.03	0.33	–	355	-0.070	–	–	–
Hunt & Reffert	2023	1.06	0.20	0.39	187	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
FoF 2290	73.2	147.29	-60.14	0.9	-7.07	4.14	-0.37	0.34
CWWDL 14103	70.1	147.36	-60.15	0.9	-7.09	4.13	-0.74	0.03

💡 Note: The % column shows the percentage of members that HSC 2304 shares with each listed object.

Visualization

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