HSC 2189

0.09 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 6.2 [pc], 0.07 [pc^-2]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.38 Low 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 2189 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-rich, young 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.

Distant High extinction Metal-rich Young

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.86 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.86 (50th percentile).

Data

🔍 Search references for HSC 2189 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–	139.85	-46.429	0.286	-4.334	3.786	–
Hunt & Reffert	2024	139.859	-46.502	0.298	-4.318	3.79	–
Cavallo et al.	2024	139.731	-46.441	0.296	–	–	–
Hunt & Reffert	2023	139.859	-46.502	0.298	-4.318	3.79	–

💡 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–	3.18	4.63	2.46	35	0.790	617	–	–
Hunt & Reffert	2024	3.18	4.63	2.46	35	–	617⁽¹⁾	–	–
Cavallo et al.	2024	6.67	4.08	–	30	0.790	–	–	–
Hunt & Reffert	2023	3.18	4.63	2.46	35	–	–	–	–

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

Visualization

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