CWNU 25

0.09 UTI

0.0

C_N

0.08

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 21

Radius (P>50% members) 26.2 [arcmin]

C_N 0.0 Sparse
C_dens 0.08 Very loose
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

ℹ️

CWNU 25 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close^* distance, above the mid-plane, affected by low extinction. It is catalogued as a very metal-poor, very young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~0.97 kpc) differs significantly from the median photometric distance (~1.58 kpc).

Note: This object shares a moderate percentage of members with at least one entry reported in the same catalogue. 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 Low extinction Very metal-poor Very young

Data

🔍 Search references for CWNU 25 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	133.466	-25.202	1.031	-6.366	2.619	14.464
He et al.	2022	133.394	-25.059	1.04	-6.3	2.46	–

💡 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	1.58	0.12	–	4	-1.335	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 509	36.0	133.93	-25.68	1.04	-6.43	2.71	9.94	0.28

💡 Note: The % column shows the percentage of members that CWNU 25 shares with each listed object.

Visualization

ℹ️