HSC 1725

0.16 UTI

0.0

C_N

0.06

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 17

Stellar density (N₅₀/rad) 0.3 [N/pc²]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.06 Very loose
C_C3 0.25 Low quality
C_lit 0.25 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 1725 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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.

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1725 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–	106.33	-4.044	0.168	-0.413	0.747	82.908
Hu & Soubiran	2025	106.245	-4.042	–	–	–	–
Hunt & Reffert	2024	106.332	-4.042	0.168	-0.436	0.721	94.177
Cavallo et al.	2024	106.245	-4.042	0.168	–	–	–
Hunt & Reffert	2023	106.332	-4.042	0.168	-0.436	0.721	94.177

💡 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–	4.72	1.645	2.54	370	-0.010	247	–	–
Hu & Soubiran	2025	–	–	–	–	-0.340⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	247⁽¹⁾	–	–
Cavallo et al.	2024	4.51	1.53	–	550	0.320	–	–	–
Hunt & Reffert	2023	4.93	1.76	2.54	191	–	–	–	–

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

Visualization

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