CWNU 434

0.26 UTI

0.34

C_N

0.27

C_dens

0.5

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 34

Core radius and density 2.1 [pc], 1.3 [pc^-2]

C3 classification BB

C_N 0.34 Poorly populated
C_dens 0.27 Loose
C_C3 0.5 Intermediate quality
C_lit 0.1 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 434 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.

Distant Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.85 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.85 (50th percentile).

Data

🔍 Search references for CWNU 434 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–	110.153	-7.304	0.277	-1.453	0.065	–
Hu & Soubiran	2025	110.144	-7.303	–	–	–	–
Hunt & Reffert	2024	110.161	-7.308	0.27	-1.445	0.097	–
Cavallo et al.	2024	110.144	-7.303	0.268	–	–	–
Hunt & Reffert	2023	110.161	-7.308	0.27	-1.445	0.097	–
He et al.	2022	110.176	-7.302	0.29	-1.41	0.07	–

💡 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–	3.3	0.465	1.54	480	-0.190	145	–	–
Hu & Soubiran	2025	–	–	–	–	-0.190⁽⁵⁾	–	–	–
Hunt & Reffert	2024	3.30	0.42	1.54	460	–	145⁽¹⁾	–	–
Cavallo et al.	2024	2.48	0.75	–	575	-0.400	–	–	–
Hunt & Reffert	2023	3.30	0.42	1.54	459	–	–	–	–
He et al.	2022	3.80	0.51	–	501	0.350	–	–	–

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

Visualization

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