CWNU 2420

0.22 UTI

0.0

C_N

0.2

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 1.3 [pc], 1.0 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.2 Very loose
C_C3 0.75 High 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 2420 is a sparse, very loose object of high C3 quality. Its parallax locates it at a large distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, metal-rich, 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.

Very distant Very high extinction Massive Metal-rich Young

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.03 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.03 (50th percentile).

Data

🔍 Search references for CWNU 2420 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–	202.74	-62.758	0.166	-6.412	-1.236	79.096
Hunt & Reffert	2024	202.74	-62.76	0.157	-6.417	-1.257	56.05
Cavallo et al.	2024	202.759	-62.752	0.162	–	–	–
Hunt & Reffert	2023	202.74	-62.76	0.157	-6.417	-1.257	56.05
He et al.	2023	202.748	-62.75	0.194	-6.43	-1.293	–

💡 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–	5.98	5.99	2.45	42	0.950	3468	–	–
Hunt & Reffert	2024	5.98	5.99	2.45	64	–	3468⁽¹⁾	–	–
Cavallo et al.	2024	3.03	5.43	–	20	0.950	–	–	–
Hunt & Reffert	2023	5.98	5.99	2.45	64	–	–	–	–
He et al.	2023	6.31	7.40	–	4	–	–	–	–

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

Visualization

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