HSC 1771

0.38 UTI

0.32

C_N

0.56

C_dens

0.5

C_C3

0.25

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 32

Radius (P>50% members) 2.1 [arcmin]

C_N 0.32 Poorly populated
C_dens 0.56 Moderately dense
C_C3 0.5 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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HSC 1771 is a poorly populated, moderately dense object of intermediate C3 quality. Its parallax locates it at a large distance, well below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old 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.

Distant Low extinction Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1771 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	–	100.926	-14.156	0.18	-0.383	2.252	77.216
Hu & Soubiran	2025	100.912	-14.147	–	–	–	–
Hunt & Reffert	2024	100.929	-14.16	0.187	-0.377	2.236	77.204
Cavallo et al.	2024	100.912	-14.147	0.183	–	–	–
Hunt & Reffert	2023	100.929	-14.16	0.187	-0.377	2.236	77.204

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.450*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	232*	–	–
Cavallo et al.	2024	4.25	1.26	–	977	-0.370	–	–	–
Hunt & Reffert	2023	5.07	0.69	0.54	1026	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3241	100.0	100.93	-14.15	0.18	-0.39	2.25	78.15	0.12

💡 Note: The % column shows the percentage of members that HSC 1771 shares with each listed object.

Visualization

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