HSC 923

0.08 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 16

Core radius and density 7.2 [pc], 0.07 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.38 Low 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 923 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age 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.

Very distant Moderate extinction Intermediate age

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.63 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.63 (50th percentile).

Data

🔍 Search references for HSC 923 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–	357.315	63.37	0.186	-2.273	-0.486	-87.92
Hunt & Reffert	2024	357.266	63.397	0.18	-2.277	-0.496	–
Hunt & Reffert	2023	357.266	63.397	0.18	-2.277	-0.496	–

💡 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–	5.1	2.53	1.32	253	–	257	–	–
Hunt & Reffert	2024	5.10	2.53	1.32	253	–	257⁽¹⁾	–	–
Hunt & Reffert	2023	5.10	2.53	1.32	253	–	–	–	–

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

Visualization

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