CWNU 2918

0.28 UTI

0.27

C_N

0.26

C_dens

0.25

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 27

Stellar density (N₅₀/rad) 1.3 [N/pc²]

C3 classification DB

C_N 0.27 Poorly populated
C_dens 0.26 Loose
C_C3 0.25 Low quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 2918 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It was recently reported in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as primordial binary cluster 106 along with CWNU_1445.

Palma et al. (2025)
Classified as optical pair P309, along with CWNU_1445.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 2918 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–	105.848	-6.952	0.374	-1.184	0.693	–
Hunt & Reffert	2024	105.841	-6.957	0.37	-1.169	0.672	–
Cavallo et al.	2024	105.868	-6.979	0.37	–	–	–
Hunt & Reffert	2023	105.841	-6.957	0.37	-1.169	0.672	–
He et al.	2023	105.843	-6.894	0.381	-1.182	0.696	–

💡 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–	2.415	1.36	1.01	30	-0.050	251	–	–
Liu et al.	2025	5.01	0.51	–	15	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	251⁽¹⁾	–	–
Cavallo et al.	2024	2.32	1.11	–	380	-0.050	–	–	–
Hunt & Reffert	2023	2.43	1.61	1.01	39	–	–	–	–
He et al.	2023	2.40	1.75	–	20	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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