CWNU 3640

0.16 UTI

0.54

C_N

0.38

C_dens

0.5

C_C3

0.0

C_lit

0.56

C_dup

C3 classification BB

Number of members (P>50%) 57

Radius (P>50% members) 4.3 [arcmin]

C_N 0.54 Moderately populated
C_dens 0.38 Loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.56 Likely unique

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

Overview

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CWNU 3640 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, well above the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It was recently reported in the literature.

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

Distant Low extinction Old

Data

🔍 Search references for CWNU 3640 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	–	86.521	48.387	0.228	1.139	-1.141	2.241
He et al.	2023	86.495	48.384	0.231	1.127	-1.146	1.94

💡 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	3.98	1.00	–	1000	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 1282	43.9	86.51	48.37	0.23	1.11	-1.15	2.09	0.26

💡 Note: The % column shows the percentage of members that CWNU 3640 shares with each listed object.

Visualization

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