HXHWL 9

0.17 UTI

0.33

C_N

0.28

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 33

Stellar density (N₅₀/rad) 1.4 [N/pc²]

C3 classification DB

C_N 0.33 Poorly populated
C_dens 0.28 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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HXHWL 9 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a metal-rich, young cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a significant percentage of members with 2 later reported entries. 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 Metal-rich Young

Data

🔍 Search references for HXHWL 9 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–	117.114	-25.378	0.404	-1.607	1.271	26.732
He et al.	2021	117.092	-25.352	0.38	-1.63	1.31	–

💡 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–	2.4	0.72	–	95	0.537	–	–	–
He et al.	2021	2.40	0.72	–	95	0.537	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Theia 3628	57.6	117.16	-25.42	0.41	-1.6	1.28	26.73	0.03
CWWDL 13542	21.2	117.15	-25.32	0.44	-1.57	1.38	26.73	0.04

💡 Note: The % column shows the percentage of members that HXHWL 9 shares with each listed object.

Visualization

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