CWNU 399

0.33 UTI

0.3

C_N

0.5

C_dens

0.25

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 30

Stellar density (N₅₀/rad) 2.5 [N/pc²]

C3 classification DB

C_N 0.3 Poorly populated
C_dens 0.5 Moderately dense
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 399 is a poorly populated, moderately dense object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a very metal-poor, young cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

Relatively close Moderate extinction Very metal-poor Young

Palma et al. (2025)
Part of multiple system G63, along with Theia_1890 and HXHWL_68.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 399 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–	125.084	-43.148	0.822	-2.411	4.904	2.639
Hunt & Reffert	2024	125.076	-43.21	0.821	-2.408	4.903	9.7
Cavallo et al.	2024	125.118	-43.136	0.824	–	–	–
Hunt & Reffert	2023	125.076	-43.21	0.821	-2.408	4.903	9.7
He et al.	2022	125.075	-43.2	0.816	-2.404	4.898	–
He et al.	2022	125.131	-43.163	0.82	-2.42	4.9	12.3

💡 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]	B_frac	BSS
UCC	99999–	1.22	1.815	2.14	26	-1.044	150	–	–
Hunt & Reffert	2024	–	–	–	–	–	150⁽¹⁾	–	–
Cavallo et al.	2024	1.22	2.06	–	20	-0.060	–	–	–
Hunt & Reffert	2023	1.18	1.57	2.14	40	–	–	–	–
He et al.	2022	–	2.45	–	32	–	–	–	–
He et al.	2022	1.70	1.38	–	2	-2.028	–	–	–

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

Visualization

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