HSC 1203

0.22 UTI

0.0

C_N

0.37

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 21

Stellar density (N₅₀/rad) 1.9 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.37 Loose
C_C3 0.75 High quality
C_lit 0.0 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 1203 is a sparse, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, young cluster, but with a large variance across recent sources for the age 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.

Distant Moderate extinction Metal-rich Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1203 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–	65.43	53.379	0.216	0.412	-0.609	–
Hunt & Reffert	2024	65.439	53.376	0.221	0.411	-0.574	–
Cavallo et al.	2024	65.449	53.429	0.224	–	–	–
Hunt & Reffert	2023	65.439	53.376	0.221	0.411	-0.574	–

💡 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–	4.315	2.45	1.54	62	0.690	568	–	–
Hunt & Reffert	2024	–	–	–	–	–	568⁽¹⁾	–	–
Cavallo et al.	2024	4.74	2.33	–	110	0.690	–	–	–
Hunt & Reffert	2023	3.89	2.57	1.54	14	–	–	–	–

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

Visualization

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