CWNU 1239

0.13 UTI

0.0

C_N

0.14

C_dens

0.62

C_C3

0.0

C_lit

0.84

C_dup

C3 classification AC

Number of members (P>50%) 18

Radius (P>50% members) 18.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.14 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.84 Very likely unique

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

Overview

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CWNU 1239 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a very young cluster (see Parameters). It is rarely studied in the literature.

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

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.84) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Low extinction Very young

Data

🔍 Search references for CWNU 1239 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	–	129.848	-40.539	1.059	-5.385	3.468	-15.306
He et al.	2022	130.232	-40.792	1.079	-5.404	3.465	–

💡 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
He et al.	2022	–	0.30	–	3	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
FoF 2221	16.0	129.43	-40.23	1.06	-5.62	3.77	21.57	0.41
OC 0467	16.0	129.4	-40.29	1.06	-5.67	3.69	19.99	0.09
OC 0472	16.0	130.27	-40.83	1.07	-4.96	3.2	12.76	0.42

💡 Note: The % column shows the percentage of members that CWNU 1239 shares with each listed object.

Visualization

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