HSC 779

0.20 UTI

0.0

C_N

0.11

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 18

Stellar density (N₅₀/rad) 0.6 [N/pc²]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.11 Very 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 779 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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 Low extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P299, along with CWNU_1276.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 779 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–	332.631	52.585	0.402	-4.443	-4.059	-43.726
Hu & Soubiran	2025	332.585	52.535	–	–	–	–
Hunt & Reffert	2024	332.634	52.594	0.411	-4.437	-4.08	-43.964
Cavallo et al.	2024	332.585	52.535	0.408	–	–	–
Hunt & Reffert	2023	332.634	52.594	0.411	-4.437	-4.08	-43.964

💡 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–	2.245	0.895	1.08	710	-0.140	65	–	–
Hu & Soubiran	2025	–	–	–	–	-0.070⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	65⁽¹⁾	–	–
Cavallo et al.	2024	2.23	1.22	–	871	-0.210	–	–	–
Hunt & Reffert	2023	2.26	0.57	1.08	548	–	–	–	–

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

Visualization

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