CWNU 279

0.13 UTI

0.0

C_N

0.15

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 1.9 [pc], 0.8 [pc^-2]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.15 Very loose
C_C3 0.38 Low 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 279 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, near 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 absorption and metallicity parameters (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 Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for CWNU 279 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–	103.831	-2.134	0.537	-1.416	1.093	80.19
Hunt & Reffert	2024	103.827	-2.132	0.55	-1.401	1.123	29.007
Cavallo et al.	2024	103.83	-2.151	0.554	–	–	–
Hunt & Reffert	2023	103.827	-2.132	0.55	-1.401	1.123	29.007
He et al.	2022	103.839	-2.151	0.53	-1.42	1.09	–

💡 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–	1.725	0.29	0.78	111	0.231	91	–	–
Hunt & Reffert	2024	1.74	0.29	0.78	111	–	91⁽¹⁾	–	–
Cavallo et al.	2024	1.71	0.04	–	219	0.740	–	–	–
Hunt & Reffert	2023	1.74	0.29	0.78	111	–	–	–	–
He et al.	2022	1.48	0.51	–	63	-0.279	–	–	–

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

Visualization

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