HSC 1189

0.17 UTI

0.0

C_N

0.1

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 18

Radius (P>50% members) 7.2 [arcmin]

C_N 0.0 Sparse
C_dens 0.1 Very loose
C_C3 0.25 Low 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 1189 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1189 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	–	54.798	48.867	0.343	0.598	-1.578	0.029
Zhang et al.	2024	54.883	48.82	–	–	–	–
Hunt & Reffert	2024	54.883	48.82	0.352	0.626	-1.588	-7.558
Cavallo et al.	2024	54.833	48.966	0.354	–	–	–
Hunt & Reffert	2023	54.883	48.82	0.352	0.626	-1.588	-7.558

💡 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
Zhang et al.	2024	–	–	–	–	-0.262*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	65*	–	–
Cavallo et al.	2024	2.36	1.28	–	224	0.470	–	–	–
Hunt & Reffert	2023	2.54	1.22	0.82	236	–	–	–	–

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

Visualization

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