CWNU 2284

0.24 UTI

0.28

C_N

0.02

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 28

Core radius and density 7.0 [pc], 0.08 [pc^-2]

C3 classification AB

C_N 0.28 Poorly populated
C_dens 0.02 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 2284 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age 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 Low extinction Near-solar metallicity Intermediate age

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 2284 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–	109.388	-9.548	0.351	-2.207	2.032	–
Hunt & Reffert	2024	109.347	-9.454	0.34	-2.166	2.055	64.443
Cavallo et al.	2024	109.356	-9.468	0.341	–	–	–
Hunt & Reffert	2023	109.347	-9.454	0.34	-2.166	2.055	64.443
He et al.	2023	109.459	-9.74	0.352	-2.205	2.05	103.57

💡 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–	2.53	0.835	2.01	231	0.070	175	–	–
Hunt & Reffert	2024	2.53	0.76	2.01	304	–	175⁽¹⁾	–	–
Cavallo et al.	2024	2.55	0.91	–	158	0.070	–	–	–
Hunt & Reffert	2023	2.53	0.76	2.01	304	–	–	–	–
He et al.	2023	2.51	1.00	–	32	–	–	–	–

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

Visualization

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