CWNU 103

0.12 UTI

0.0

C_N

0.36

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 24

Stellar density (N₅₀/rad) 1.8 [N/pc²]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.36 Loose
C_C3 0.25 Low 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 103 is a sparse, loose object of low C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as an extremely metal-poor, very young cluster (see Parameters). It is rarely studied in the literature.

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 Moderate extinction Extremely metal-poor Very young

Data

🔍 Search references for CWNU 103 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–	30.683	68.445	0.984	0.754	0.574	-18.336
He et al.	2022	30.775	68.449	0.98	0.78	0.58	–

💡 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–	1.45	1.68	–	2	-2.028	–	–	–
He et al.	2022	1.45	1.68	–	2	-2.028	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Theia 4940	52.0	30.07	68.61	0.99	0.74	0.59	-23.86	0.06
CWNU 377	36.0	29.99	68.64	0.99	0.65	0.62	-34.08	0.15

💡 Note: The % column shows the percentage of members that CWNU 103 shares with each listed object.

Visualization

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