HSC 1071

0.15 UTI

0.0

C_N

0.14

C_dens

0.5

C_C3

0.25

C_lit

0.68

C_dup

N₅₀ (P>50% members) 21

Stellar density (N₅₀/rad) 0.7 [N/pc²]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.14 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 0.68 Likely unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

HSC 1071 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, above 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 absorption and age parameters (see Parameters). It was recently reported in the literature.

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Close Moderate extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 181 along with Stock_5.

Palma et al. (2025)
Part of multiple system G102, along with COIN-Gaia_34, CWNU_466, FSR_0551 and Stock_5.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1071 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	33.254	64.328	1.024	-0.725	-2.179	-32.103
Hunt & Reffert	2024	33.228	64.319	1.031	-0.703	-2.195	-20.487
Cavallo et al.	2024	33.472	64.337	1.033	–	–	–
Hunt & Reffert	2023	33.228	64.319	1.031	-0.703	-2.195	-20.487

💡 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–	0.93	1.68	0.7	56	0.080	66	–	–
Liu et al.	2025	0.74	0.22	–	794	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	66⁽¹⁾	–	–
Cavallo et al.	2024	1.01	1.83	–	56	0.080	–	–	–
Hunt & Reffert	2023	0.93	1.68	0.70	48	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Stock 5	32.0	31.16	64.36	1.03	-0.81	-2.2	-24.66	0.91

💡 Note: The % column shows the percentage of members that HSC 1071 shares with each listed object.

Visualization

ℹ️

1 2