CWNU 1920

0.37 UTI

0.3

C_N

0.42

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 30

Core radius and density 1.2 [pc], 2.1 [pc^-2]

C3 classification AA

C_N 0.3 Poorly populated
C_dens 0.42 Loose
C_C3 1.0 Very 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 1920 is a poorly populated, loose object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by 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.

Relatively close High extinction Massive Metal-rich Young

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.06 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.06 (50th percentile).

Data

🔍 Search references for CWNU 1920 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–	260.104	-40.654	0.377	-0.503	-1.116	-2.857
Hunt & Reffert	2024	260.102	-40.659	0.375	-0.473	-1.102	9.135
Cavallo et al.	2024	260.085	-40.661	0.38	–	–	–
Hunt & Reffert	2023	260.102	-40.659	0.375	-0.473	-1.102	9.135
He et al.	2023	260.077	-40.649	0.388	-0.468	-1.126	–

💡 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–	2.705	4.68	3.12	30	0.560	1066	–	–
Hunt & Reffert	2024	2.39	4.68	3.12	37	–	1066⁽¹⁾	–	–
Cavallo et al.	2024	3.22	4.37	–	22	0.560	–	–	–
Hunt & Reffert	2023	2.39	4.68	3.12	37	–	–	–	–
He et al.	2023	3.02	5.95	–	2	–	–	–	–

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

Visualization

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