HSC 1742

0.19 UTI

0.29

C_N

0.13

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 29

Core radius and density 1.8 [pc], 0.7 [pc^-2]

C3 classification BC

C_N 0.29 Poorly populated
C_dens 0.13 Very loose
C_C3 0.38 Low quality
C_lit 0.06 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 1742 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age and metallicity parameters (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 Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for HSC 1742 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–	112.452	-4.117	0.604	-0.707	-0.403	15.798
Zhang et al.	2024	112.366	-4.125	–	–	–	–
Hunt & Reffert	2024	112.366	-4.125	0.598	-0.713	-0.411	15.813
Cavallo et al.	2024	112.435	-4.136	0.605	–	–	–
Hunt & Reffert	2023	112.366	-4.125	0.598	-0.713	-0.411	15.813

💡 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–	1.62	0.18	0.43	70	-0.039	135	–	–
Zhang et al.	2024	–	–	–	–	-0.208⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.62	0.18	0.43	70	–	135⁽¹⁾	–	–
Cavallo et al.	2024	1.44	0.17	–	282	0.130	–	–	–
Hunt & Reffert	2023	1.62	0.18	0.43	70	–	–	–	–

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

Visualization

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