HSC 1086

0.05 UTI

0.0

C_N

0.15

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 20

Stellar density (N₅₀/rad) 0.7 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.15 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 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 1086 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, near 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.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P369, along with CWNU_346.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for HSC 1086 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–	34.489	60.619	0.448	1.935	-1.583	17.442
Hu & Soubiran	2025	34.149	60.712	–	–	–	–
Cavallo et al.	2024	34.149	60.712	0.471	–	–	–
Hunt & Reffert	2023	34.668	60.583	0.471	1.919	-1.587	-3.13

💡 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–	1.88	2.885	2.04	657	0.115	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.120⁽⁵⁾	–	–	–
Cavallo et al.	2024	1.79	2.83	–	813	0.350	–	–	–
Hunt & Reffert	2023	1.97	2.94	2.04	501	–	–	–	–

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

Visualization

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