HSC 1408

0.18 UTI

0.0

C_N

0.02

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 6.5 [pc], 0.08 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.75 High quality
C_lit 0.06 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 1408 is a sparse, very loose object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old 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.

⚠️ 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 Old

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.88 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.88 (50th percentile).

Data

🔍 Search references for HSC 1408 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–	82.002	27.792	0.17	0.676	-1.129	–
Hu & Soubiran	2025	81.985	27.8	–	–	–	–
Hunt & Reffert	2024	81.99	27.83	0.181	0.668	-1.126	–
Cavallo et al.	2024	81.985	27.8	0.177	–	–	–
Hunt & Reffert	2023	81.99	27.83	0.181	0.668	-1.126	–

💡 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–	4.73	1.65	0.77	1742	-0.205	509	–	–
Hu & Soubiran	2025	–	–	–	–	-0.260⁽⁵⁾	–	–	–
Hunt & Reffert	2024	4.73	1.65	0.77	1744	–	509⁽¹⁾	–	–
Cavallo et al.	2024	6.31	1.98	–	832	-0.150	–	–	–
Hunt & Reffert	2023	4.73	1.65	0.77	1742	–	–	–	–

(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 3674	100.0	82.0	27.8	0.21	0.68	-1.11	–	0.12

💡 Note: The % column shows the percentage of members that HSC 1408 shares with each listed object.

Visualization

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