CWNU 256

0.19 UTI

0.45

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.42

C_dup

N_m (P>50%) 45

Core radius and density 0.8 [pc], 5.1 [pc^-2]

C3 classification BA

C_N 0.45 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.42 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 256 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close High extinction Near-solar metallicity Young

Data

🔍 Search references for CWNU 256 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–	239.436	-53.066	0.721	-3.277	-3.201	-15.804
He et al.	2022	239.431	-53.067	0.72	-3.28	-3.19	–

💡 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–	1.51	3.04	–	32	0.233	–	–	–
He et al.	2022	1.51	3.04	–	32	0.233	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 13864	100.0	239.44	-53.07	0.72	-3.28	-3.2	-15.8	0.02
Theia 2115	91.1	239.44	-53.07	0.72	-3.28	-3.2	-15.8	0.0
OC 0637	57.8	239.43	-53.06	0.73	-3.28	-3.2	-15.8	0.31

💡 Note: The % column shows the percentage of members that CWNU 256 shares with each listed object.

Visualization

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