HXHWL 42

(H21OC 42)

0.19 UTI

0.26

C_N

0.13

C_dens

0.38

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 2.0 [pc], 0.7 [pc^-2]

C3 classification CB

C_N 0.26 Poorly populated
C_dens 0.13 Very loose
C_C3 0.38 Low quality
C_lit 0.1 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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HXHWL 42 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied 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 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 HXHWL 42 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–	122.335	-35.598	0.888	-4.735	3.007	18.151
Hunt & Reffert	2024	122.322	-35.659	0.891	-4.765	2.993	11.784
Cavallo et al.	2024	122.367	-35.599	0.892	–	–	–
Hunt & Reffert	2023	122.322	-35.659	0.891	-4.765	2.993	11.784
He et al.	2022	122.244	-35.542	0.874	-4.669	3.011	–
He et al.	2021	122.332	-35.568	0.86	-4.78	2.97	–

💡 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–	1.095	0.62	0.81	137	0.277	156	–	–
Hunt & Reffert	2024	1.06	0.43	0.81	137	–	156⁽¹⁾	–	–
Cavallo et al.	2024	1.13	0.62	–	219	0.320	–	–	–
Hunt & Reffert	2023	1.06	0.43	0.81	137	–	–	–	–
He et al.	2022	–	0.85	–	63	–	–	–	–
He et al.	2021	1.20	0.89	–	91	0.233	–	–	–

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

Visualization

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