CWNU 409

0.34 UTI

0.42

C_N

0.33

C_dens

0.75

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 42

Core radius and density 1.7 [pc], 1.6 [pc^-2]

C3 classification AB

C_N 0.42 Poorly populated
C_dens 0.33 Loose
C_C3 0.75 High 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 409 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for CWNU 409 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–	69.017	59.748	0.955	-0.8	-1.517	-16.376
Hunt & Reffert	2024	69.007	59.735	0.961	-0.802	-1.473	-16.03
Cavallo et al.	2024	69.048	59.74	0.974	–	–	–
Hunt & Reffert	2023	69.007	59.735	0.961	-0.802	-1.473	-16.03
He et al.	2022	69.0	59.718	0.956	-0.687	-1.55	–
He et al.	2022	69.023	59.75	0.96	-0.79	-1.43	–

💡 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–	1.05	1.54	0.75	14	0.112	97	–	–
Hunt & Reffert	2024	0.98	1.26	0.75	14	–	97⁽¹⁾	–	–
Cavallo et al.	2024	1.15	1.54	–	7	0.260	–	–	–
Hunt & Reffert	2023	0.98	1.26	0.75	14	–	–	–	–
He et al.	2022	–	1.75	–	501	–	–	–	–
He et al.	2022	1.12	2.15	–	10	-0.036	–	–	–

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

Visualization

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