CWNU 1309

0.18 UTI

0.0

C_N

0.15

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 2.5 [pc], 0.8 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.15 Very loose
C_C3 0.75 High 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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CWNU 1309 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as an intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ 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 High extinction Intermediate age

Data

🔍 Search references for CWNU 1309 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–	279.151	-11.201	0.48	-0.327	-1.518	–
He et al.	2023	279.163	-11.213	0.497	-0.332	-1.512	–

💡 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–	1.78	4.3	–	355	–	–	–	–
He et al.	2023	1.78	4.30	–	355	–	–	–	–

Visualization

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