HSC 330

0.37 UTI

0.26

C_N

0.23

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 26

Stellar density (N₅₀/rad) 1.1 [N/pc²]

C3 classification AB

C_N 0.26 Poorly populated
C_dens 0.23 Very loose
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 330 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption, age, and metallicity parameters (see Parameters). It was recently reported in the literature.

Close Moderate extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 167 along with Theia_202.

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P48, along with Theia_202.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 330 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–	292.088	-2.933	1.228	-0.057	-2.449	-15.005
Zhang et al.	2024	292.28	-3.079	–	–	–	–
Hunt & Reffert	2024	292.28	-3.079	1.229	-0.089	-2.462	-23.266
Cavallo et al.	2024	292.096	-2.915	1.229	–	–	–
Hunt & Reffert	2023	292.28	-3.079	1.229	-0.089	-2.462	-23.266

💡 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–	0.85	1.04	0.92	47	0.299	50	–	–
Liu et al.	2025	0.86	0.28	–	324	–	–	–	–
Zhang et al.	2024	–	–	–	–	0.039⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	50⁽¹⁾	–	–
Cavallo et al.	2024	0.85	1.25	–	32	0.560	–	–	–
Hunt & Reffert	2023	0.77	1.04	0.92	47	–	–	–	–

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

Visualization

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