HSC 1660

0.32 UTI

0.26

C_N

0.48

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 26

Stellar density (N₅₀/rad) 2.4 [N/pc²]

C3 classification CB

C_N 0.26 Poorly populated
C_dens 0.48 Loose
C_C3 0.38 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 1660 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a 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 Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1660 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–	102.727	2.957	0.274	-0.056	-1.059	75.905
Hu & Soubiran	2025	102.721	2.942	–	–	–	–
Hunt & Reffert	2024	102.755	2.978	0.262	-0.049	-1.069	76.061
Cavallo et al.	2024	102.721	2.941	0.262	–	–	–
Hunt & Reffert	2023	102.755	2.978	0.262	-0.049	-1.069	76.061

💡 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–	3.35	2.3	1.44	638	0.015	350	–	–
Hu & Soubiran	2025	–	–	–	–	-0.120⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	350⁽¹⁾	–	–
Cavallo et al.	2024	3.34	2.50	–	562	0.150	–	–	–
Hunt & Reffert	2023	3.36	2.10	1.44	714	–	–	–	–

(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 3024	100.0	102.72	2.95	0.28	-0.05	-1.05	75.91	0.05

💡 Note: The % column shows the percentage of members that HSC 1660 shares with each listed object.

Visualization

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