HSC 1304

0.06 UTI

0.0

C_N

0.04

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 3.4 [pc], 0.2 [pc^-2]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.25 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 1304 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near 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.

Relatively close Moderate extinction Intermediate age

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.83 (50th percentile), true positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.83 (50th percentile), true positive? (human-assigned).

Data

🔍 Search references for HSC 1304 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–	78.229	39.901	0.467	0.863	-2.757	–
Hunt & Reffert	2024	78.34	39.888	0.468	0.849	-2.753	–
Hunt & Reffert	2023	78.34	39.888	0.468	0.849	-2.753	–

💡 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–	1.95	1.555	0.67	131	–	144	–	–
Hunt & Reffert	2024	1.95	1.56	0.67	131	–	144⁽¹⁾	–	–
Hunt & Reffert	2023	1.95	1.55	0.67	131	–	–	–	–

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

Visualization

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