CWNU 2438

0.22 UTI

0.0

C_N

0.19

C_dens

0.38

C_C3

0.31

C_lit

0.92

C_dup

C3 classification CB

Number of members (P>50%) 20

Radius (P>50% members) 5.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.19 Very loose
C_C3 0.38 Low quality
C_lit 0.31 Poorly studied
C_dup 0.92 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 2438 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

Note: This is very likely a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close High extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 2438 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	–	318.423	49.007	0.334	-3.248	-4.747	-42.313
Hu & Soubiran	2025	318.421	49.005	–	–	–	–
Hunt & Reffert	2024	318.37	49.002	0.344	-3.245	-4.711	-42.36
Cavallo et al.	2024	318.421	49.005	0.344	–	–	–
Hunt & Reffert	2023	318.37	49.002	0.344	-3.245	-4.711	-42.36
He et al.	2023	318.386	49.004	0.332	-3.235	-4.76	-40.16

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.030*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	377*	–	–
Cavallo et al.	2024	2.49	3.08	–	1175	0.350	–	–	–
Hunt & Reffert	2023	2.69	3.89	1.22	488	–	–	–	–
He et al.	2023	2.63	3.90	–	501	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Bica 159	8.0	318.81	48.88	0.27	-3.23	-4.78	–	0.04

💡 Note: The % column shows the percentage of members that CWNU 2438 shares with each listed object.

Visualization

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