HSC 2042

0.24 UTI

0.26

C_N

0.08

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 2.8 [pc], 0.4 [pc^-2]

C3 classification AB

C_N 0.26 Poorly populated
C_dens 0.08 Very loose
C_C3 0.75 High 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 2042 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

⚠️ 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 Intermediate age

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 2042 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–	130.065	-32.684	0.495	-5.562	3.196	–
Hu & Soubiran	2025	130.105	-32.731	–	–	–	–
Hunt & Reffert	2024	130.056	-32.672	0.505	-5.545	3.2	63.134
Cavallo et al.	2024	130.105	-32.731	0.503	–	–	–
Hunt & Reffert	2023	130.056	-32.672	0.505	-5.545	3.2	63.134

💡 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–	1.91	0.7	0.94	349	-0.025	109	–	–
Hu & Soubiran	2025	–	–	–	–	-0.160⁽⁵⁾	–	–	–
Hunt & Reffert	2024	1.91	0.70	0.94	349	–	109⁽¹⁾	–	–
Cavallo et al.	2024	1.75	0.63	–	1072	0.110	–	–	–
Hunt & Reffert	2023	1.91	0.70	0.94	348	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3011	96.2	130.08	-32.7	0.5	-5.56	3.2	–	0.05

💡 Note: The % column shows the percentage of members that HSC 2042 shares with each listed object.

Visualization

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