HSC 2097

0.17 UTI

0.0

C_N

0.17

C_dens

0.38

C_C3

0.25

C_lit

0.8

C_dup

N₅₀ (P>50% members) 24

Stellar density (N₅₀/rad) 0.8 [N/pc²]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.17 Very loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 0.8 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 2097 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

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

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.8) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Low extinction Low mass Near-solar metallicity Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 219 along with UBC_1619.

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P34, along with UBC_1619.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 2097 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–	119.422	-46.956	0.623	-3.659	4.91	-6.592
Hunt & Reffert	2024	119.266	-46.952	0.631	-3.742	4.932	17.768
Cavallo et al.	2024	119.58	-47.23	0.636	–	–	–
Hunt & Reffert	2023	119.266	-46.952	0.631	-3.742	4.932	17.768

💡 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–	1.51	0.4	0.69	86	-0.230	44	–	–
Liu et al.	2025	1.70	0.15	–	112	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	44⁽¹⁾	–	–
Cavallo et al.	2024	1.48	0.57	–	78	-0.230	–	–	–
Hunt & Reffert	2023	1.51	0.40	0.69	86	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HXHWL 11	20.0	119.95	-47.26	0.63	-3.81	4.93	13.14	0.2

💡 Note: The % column shows the percentage of members that HSC 2097 shares with each listed object.

Visualization

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