CWNU 1843

0.16 UTI

0.29

C_N

0.13

C_dens

0.25

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 29

Core radius and density 2.3 [pc], 0.6 [pc^-2]

C3 classification DB

C_N 0.29 Poorly populated
C_dens 0.13 Very loose
C_C3 0.25 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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CWNU 1843 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It was recently reported in the literature.

Note: This object shares a significant 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 Moderate extinction Metal-poor Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.77 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.77 (50th percentile).

Data

🔍 Search references for CWNU 1843 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–	149.358	-55.573	0.459	-6.466	3.318	–
Hunt & Reffert	2024	149.459	-55.565	0.451	-6.461	3.347	–
Cavallo et al.	2024	149.325	-55.553	0.453	–	–	–
Hunt & Reffert	2023	149.459	-55.565	0.451	-6.461	3.347	–
He et al.	2023	149.331	-55.535	0.476	-6.465	3.32	–

💡 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–	2.05	1.795	0.92	139	-0.580	233	–	–
Hunt & Reffert	2024	2.10	1.69	0.92	139	–	233⁽¹⁾	–	–
Cavallo et al.	2024	1.96	2.31	–	275	-0.580	–	–	–
Hunt & Reffert	2023	2.10	1.69	0.92	139	–	–	–	–
He et al.	2023	2.00	1.90	–	32	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 13562	69.0	149.35	-55.54	0.46	-6.41	3.36	12.43	0.06

💡 Note: The % column shows the percentage of members that CWNU 1843 shares with each listed object.

Visualization

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