CWNU 521

0.24 UTI

0.26

C_N

0.21

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 26

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

C_N 0.26 Poorly populated
C_dens 0.21 Very loose
C_C3 0.75 High 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 521 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a close^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, very young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~0.92 kpc) differs significantly from the median photometric distance (~0.66 kpc).

Note: This object shares a large 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.

Close Moderate extinction Metal-poor Very young

Data

🔍 Search references for CWNU 521 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	–	310.555	56.873	1.086	-2.332	-5.023	-12.511
He et al.	2022	310.255	56.99	1.09	-2.33	-5.02	-37.3

💡 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	0.66	1.44	–	13	-0.642	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 136	84.6	310.99	56.82	1.09	-2.34	-5.01	-9.87	0.32

💡 Note: The % column shows the percentage of members that CWNU 521 shares with each listed object.

Visualization

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