CWNU 1590

0.23 UTI

0.27

C_N

0.1

C_dens

0.62

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 1.8 [pc], 0.5 [pc^-2]

C3 classification AC

C_N 0.27 Poorly populated
C_dens 0.1 Very loose
C_C3 0.62 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 1590 is a poorly populated, very loose object of intermediate 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, 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.

Relatively close Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Data

🔍 Search references for CWNU 1590 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–	150.541	-51.777	0.625	-5.568	3.819	-18.528
Hunt & Reffert	2024	150.48	-51.878	0.628	-5.598	3.826	-9.644
Cavallo et al.	2024	150.481	-51.713	0.626	–	–	–
Hunt & Reffert	2023	150.48	-51.878	0.628	-5.598	3.826	-9.644
He et al.	2023	150.61	-51.752	0.627	-5.565	3.813	–

💡 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–	1.52	2.075	1.97	70	0.330	147	–	–
Hunt & Reffert	2024	1.52	1.90	1.97	64	–	147⁽¹⁾	–	–
Cavallo et al.	2024	1.69	2.25	–	76	0.330	–	–	–
Hunt & Reffert	2023	1.52	1.90	1.97	64	–	–	–	–
He et al.	2023	1.51	2.35	–	562	–	–	–	–

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

Visualization

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