HSC 1799

0.24 UTI

0.0

C_N

0.31

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 1.6 [N/pc²]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.31 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 1799 is a sparse, loose object of low C3 quality. Its parallax locates it at a moderate distance, above 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

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 207 along with UBC_630.

Palma et al. (2025)
Classified as genetic pair P218, along with UBC_630.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1799 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–	112.992	-11.788	0.477	-2.796	2.666	27.472
Hunt & Reffert	2024	112.969	-11.747	0.479	-2.771	2.67	27.483
Cavallo et al.	2024	112.994	-11.788	0.479	–	–	–
Hunt & Reffert	2023	112.969	-11.747	0.479	-2.771	2.67	27.483

💡 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–	1.94	0.22	0.25	142	-0.320	64	–	–
Liu et al.	2025	2.94	0.22	–	58	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	64⁽¹⁾	–	–
Cavallo et al.	2024	1.92	0.48	–	209	-0.320	–	–	–
Hunt & Reffert	2023	1.94	0.15	0.25	142	–	–	–	–

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

Visualization

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