CWNU 2004

0.20 UTI

0.31

C_N

0.06

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 31

Core radius and density 2.5 [pc], 0.3 [pc^-2]

C3 classification BB

C_N 0.31 Poorly populated
C_dens 0.06 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.06 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 2004 is a poorly populated, very loose object of intermediate 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 age parameter (see Parameters). It was recently reported in the literature.

⚠️ 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.

Distant Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.73 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.73 (50th percentile).

Data

🔍 Search references for CWNU 2004 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–	15.321	63.116	0.231	-1.47	-0.172	-30.062
Hunt & Reffert	2024	15.268	63.114	0.221	-1.464	-0.186	–
Cavallo et al.	2024	15.294	63.095	0.223	–	–	–
Hunt & Reffert	2023	15.268	63.114	0.221	-1.464	-0.186	–
He et al.	2023	15.454	63.137	0.298	-1.483	-0.119	-30.06

💡 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–	4.01	2.565	2.12	41	0.400	585	–	–
Hunt & Reffert	2024	4.01	2.62	2.12	41	–	585⁽¹⁾	–	–
Cavallo et al.	2024	4.25	2.51	–	23	0.400	–	–	–
Hunt & Reffert	2023	4.01	2.62	2.12	41	–	–	–	–
He et al.	2023	2.88	2.30	–	398	–	–	–	–

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

Visualization

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