CWNU 2509

0.24 UTI

0.27

C_N

0.3

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

C3 classification CA

Number of members (P>50%) 27

Radius (P>50% members) 2.7 [arcmin]

C_N 0.27 Poorly populated
C_dens 0.3 Loose
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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CWNU 2509 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by high extinction. It is catalogued as a very young 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.

Very distant High extinction Very young

Data

🔍 Search references for CWNU 2509 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	–	156.793	-59.499	0.186	-5.359	2.926	–
He et al.	2023	156.812	-59.493	0.2	-5.364	2.923	–

💡 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.	2023	6.61	3.05	–	3	–	–	–	–

Visualization

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