HSC 2715

0.14 UTI

0.0

C_N

0.12

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.2 [pc], 0.6 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.12 Very loose
C_C3 0.5 Intermediate 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 2715 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ 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 Metal-poor Intermediate age

Palma et al. (2025)
Classified as optical pair P486, along with UFMG_44.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.25 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.25 (50th percentile).

Data

🔍 Search references for HSC 2715 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–	233.096	-55.462	0.579	0.141	-0.916	-7.916
Hunt & Reffert	2024	233.118	-55.452	0.581	0.132	-0.945	-7.94
Cavallo et al.	2024	233.06	-55.496	0.58	–	–	–
Hunt & Reffert	2023	233.118	-55.452	0.581	0.132	-0.945	-7.94

💡 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–	1.62	2.83	2.05	201	-0.530	107	–	–
Hunt & Reffert	2024	1.62	2.83	2.05	201	–	107⁽¹⁾	–	–
Cavallo et al.	2024	1.47	3.03	–	468	-0.530	–	–	–
Hunt & Reffert	2023	1.62	2.83	2.05	201	–	–	–	–

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

Visualization

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