HSC 2315

0.14 UTI

0.31

C_N

0.15

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 31

Stellar density (N₅₀/rad) 0.7 [N/pc²]

C3 classification CC

C_N 0.31 Poorly populated
C_dens 0.15 Very loose
C_C3 0.25 Low quality
C_lit 0.0 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 2315 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate 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 significant 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.

Relatively close Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P21, along with FSR_1527.

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for HSC 2315 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–	151.285	-58.546	0.381	-7.935	4.291	-36.71
Hunt & Reffert	2024	151.259	-58.576	0.388	-7.912	4.275	-3.082
Cavallo et al.	2024	151.207	-58.583	0.385	–	–	–
Hunt & Reffert	2023	151.259	-58.576	0.388	-7.912	4.275	-3.082

💡 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–	2.38	1.835	2.3	26	0.190	544	–	–
Hunt & Reffert	2024	–	–	–	–	–	544⁽¹⁾	–	–
Cavallo et al.	2024	2.22	1.91	–	28	0.190	–	–	–
Hunt & Reffert	2023	2.54	1.76	2.30	25	–	–	–	–

(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 3897	71.0	151.21	-58.53	0.38	-7.94	4.32	-36.71	0.02

💡 Note: The % column shows the percentage of members that HSC 2315 shares with each listed object.

Visualization

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