HSC 1065

0.26 UTI

0.25

C_N

0.06

C_dens

0.75

C_C3

0.12

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 3.2 [pc], 0.3 [pc^-2]

C3 classification AB

C_N 0.25 Poorly populated
C_dens 0.06 Very loose
C_C3 0.75 High quality
C_lit 0.12 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 1065 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (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 Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.94 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.94 (50th percentile).

Data

🔍 Search references for HSC 1065 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–	29.601	59.645	0.25	-1.315	-0.231	-50.881
Hu & Soubiran	2025	29.654	59.609	–	–	–	–
Hunt & Reffert	2024	29.599	59.635	0.235	-1.294	-0.256	-82.424
Cavallo et al.	2024	29.654	59.609	0.239	–	–	–
Hunt & Reffert	2023	29.599	59.635	0.235	-1.294	-0.256	-82.424

💡 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–	3.52	1.77	1.91	95	0.250	329	–	–
Hu & Soubiran	2025	–	–	–	–	-0.170⁽⁵⁾	–	–	–
Hunt & Reffert	2024	3.52	1.77	1.91	95	–	329⁽¹⁾	–	–
Cavallo et al.	2024	3.50	1.27	–	562	0.670	–	–	–
Hunt & Reffert	2023	3.52	1.77	1.91	95	–	–	–	–

(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 3454	84.0	29.6	59.64	0.25	-1.31	-0.22	-50.88	0.03

💡 Note: The % column shows the percentage of members that HSC 1065 shares with each listed object.

Visualization

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