HSC 1706

0.18 UTI

0.27

C_N

0.07

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 2.3 [pc], 0.3 [pc^-2]

C3 classification BB

C_N 0.27 Poorly populated
C_dens 0.07 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.03 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 1706 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, young cluster (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 Metal-rich Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for HSC 1706 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–	102.691	-3.609	0.173	-0.507	0.901	105.335
Hunt & Reffert	2024	102.701	-3.611	0.173	-0.494	0.89	105.281
Cavallo et al.	2024	102.711	-3.585	0.173	–	–	–
Hunt & Reffert	2023	102.701	-3.611	0.173	-0.494	0.89	105.281

💡 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–	4.72	2.44	1.02	47	0.900	496	–	–
Hunt & Reffert	2024	4.72	2.44	1.02	47	–	496⁽¹⁾	–	–
Cavallo et al.	2024	5.42	2.12	–	120	0.900	–	–	–
Hunt & Reffert	2023	4.72	2.44	1.02	47	–	–	–	–

(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 4265	100.0	102.69	-3.59	0.17	-0.53	0.92	90.75	0.08

💡 Note: The % column shows the percentage of members that HSC 1706 shares with each listed object.

Visualization

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