CWNU 1988

0.57 UTI

0.25

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 25

Stellar density (N₅₀/rad) 14.2 [N/pc²]

C3 classification AA

C_N 0.25 Poorly populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

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

Overview

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CWNU 1988 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, old cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

Distant Moderate extinction Metal-poor Old

Palma et al. (2025)
Classified as optical pair P304, along with CWNU_1342.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 1988 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–	202.229	-63.264	0.285	-8.609	-1.798	-44.173
Hu & Soubiran	2025	202.213	-63.267	–	–	–	–
Hunt & Reffert	2024	202.218	-63.265	0.281	-8.592	-1.805	-45.177
Cavallo et al.	2024	202.213	-63.267	0.284	–	–	–
Hunt & Reffert	2023	202.218	-63.265	0.281	-8.592	-1.805	-45.177
He et al.	2023	202.22	-63.266	0.291	-8.596	-1.809	-45.47

💡 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–	3.09	2.42	1.56	1259	-0.605	480	–	–
Hu & Soubiran	2025	–	–	–	–	-0.290⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	480⁽¹⁾	–	–
Cavallo et al.	2024	2.43	3.06	–	1288	-0.920	–	–	–
Hunt & Reffert	2023	3.13	2.42	1.56	546	–	–	–	–
He et al.	2023	3.09	2.25	–	1259	–	–	–	–

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

Visualization

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