CWNU 283

0.23 UTI

0.26

C_N

0.12

C_dens

0.62

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 1.6 [pc], 0.6 [pc^-2]

C3 classification AC

C_N 0.26 Poorly populated
C_dens 0.12 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 283 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below 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 metallicity parameter (see Parameters). It is rarely studied 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: 0.83 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.83 (50th percentile).

Data

🔍 Search references for CWNU 283 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–	113.827	-42.883	0.869	-4.319	4.371	36.148
Hunt & Reffert	2024	113.832	-42.889	0.858	-4.347	4.443	-19.836
Cavallo et al.	2024	113.834	-42.865	0.864	–	–	–
Hunt & Reffert	2023	113.832	-42.889	0.858	-4.347	4.443	-19.836
He et al.	2022	113.849	-42.908	0.86	-4.34	4.36	–

💡 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–	1.095	1.185	1.16	64	-0.247	71	–	–
Hunt & Reffert	2024	1.11	0.98	1.16	76	–	71⁽¹⁾	–	–
Cavallo et al.	2024	1.08	1.62	–	52	-0.090	–	–	–
Hunt & Reffert	2023	1.11	0.97	1.16	76	–	–	–	–
He et al.	2022	1.02	1.39	–	40	-0.404	–	–	–

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

Visualization

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