HSC 320

0.33 UTI

0.5

C_N

0.32

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 51

Core radius and density 2.2 [pc], 1.6 [pc^-2]

C3 classification AB

C_N 0.5 Moderately populated
C_dens 0.32 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 320 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age 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.

Distant Very high extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.19 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.19 (50th percentile).

Data

🔍 Search references for HSC 320 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–	282.982	-0.443	0.231	-0.969	-1.689	46.131
Hunt & Reffert	2024	282.977	-0.437	0.239	-0.973	-1.697	45.282
Cavallo et al.	2024	282.984	-0.443	0.244	–	–	–
Hunt & Reffert	2023	282.977	-0.437	0.239	-0.973	-1.697	45.282

💡 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–	3.53	5.1	2.805	156	-0.480	2021	–	–
Hunt & Reffert	2024	3.53	5.10	2.80	155	–	2021⁽¹⁾	–	–
Cavallo et al.	2024	2.79	5.26	–	178	-0.480	–	–	–
Hunt & Reffert	2023	3.53	5.10	2.81	156	–	–	–	–

(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 3400	90.2	282.99	-0.44	0.23	-0.98	-1.69	46.13	0.01

💡 Note: The % column shows the percentage of members that HSC 320 shares with each listed object.

Visualization

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