HSC 738

0.13 UTI

0.0

C_N

0.11

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 2.2 [pc], 0.6 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 0.5 Intermediate 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 738 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close 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.

Relatively close High extinction Metal-rich Young

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.55 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.55 (50th percentile).

Data

🔍 Search references for HSC 738 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–	317.071	54.777	0.764	-1.236	-3.946	19.227
Hunt & Reffert	2024	317.068	54.822	0.76	-1.204	-3.947	19.259
Cavallo et al.	2024	317.118	54.757	0.759	–	–	–
Hunt & Reffert	2023	317.068	54.822	0.76	-1.204	-3.947	19.259

💡 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–	1.28	3.17	2.33	25	0.910	163	–	–
Hunt & Reffert	2024	1.28	3.17	2.33	25	–	163⁽¹⁾	–	–
Cavallo et al.	2024	2.02	2.76	–	28	0.910	–	–	–
Hunt & Reffert	2023	1.28	3.17	2.33	25	–	–	–	–

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

Visualization

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