HSC 1608

0.11 UTI

0.0

C_N

0.03

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 20

Core radius and density 2.7 [pc], 0.2 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.38 Low 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 1608 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young 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.

Close Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for HSC 1608 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–	84.058	1.09	1.321	-1.079	1.146	31.545
Yang et al.	2025	84.902	0.823	–	–	–	–
Zhang et al.	2024	84.902	0.823	–	–	–	–
Cavallo et al.	2024	84.105	1.343	1.349	–	–	–
Hunt & Reffert	2023	84.902	0.823	1.353	-1.011	1.118	33.206

💡 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–	0.715	0.38	1.02	92	-0.130	–	–	–
Yang et al.	2025	–	–	–	91	-0.130⁽³⁾	–	–	–
Zhang et al.	2024	–	–	–	–	-0.167⁽¹⁾	–	–	–
Cavallo et al.	2024	0.73	0.47	–	178	0.240	–	–	–
Hunt & Reffert	2023	0.70	0.29	1.02	92	–	–	–	–

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

Visualization

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