CWNU 1863

0.41 UTI

0.28

C_N

0.76

C_dens

0.5

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 28

Stellar density (N₅₀/rad) 3.8 [N/pc²]

C3 classification BB

C_N 0.28 Poorly populated
C_dens 0.76 Dense
C_C3 0.5 Intermediate quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 1863 is a poorly populated, dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.89 (50th percentile).

Data

🔍 Search references for CWNU 1863 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–	149.951	-53.295	0.333	-6.162	3.178	–
Hu & Soubiran	2025	149.942	-53.287	–	–	–	–
Hunt & Reffert	2024	149.957	-53.284	0.319	-6.198	3.184	–
Cavallo et al.	2024	149.942	-53.287	0.322	–	–	–
Hunt & Reffert	2023	149.957	-53.284	0.319	-6.198	3.184	–
He et al.	2023	149.949	-53.289	0.352	-6.151	3.166	–

💡 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–	2.57	1.55	0.95	355	0.180	307	–	–
Hu & Soubiran	2025	–	–	–	–	-0.090⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	307⁽¹⁾	–	–
Cavallo et al.	2024	2.47	0.93	–	912	0.450	–	–	–
Hunt & Reffert	2023	2.76	1.61	0.95	296	–	–	–	–
He et al.	2023	2.57	1.55	–	355	–	–	–	–

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

Visualization

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