CWNU 2503

0.23 UTI

0.0

C_N

0.04

C_dens

0.38

C_C3

0.38

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 15

Radius (P>50% members) 5.7 [arcmin]

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.38 Low quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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CWNU 2503 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, below 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.

(*): The parallax distance estimate (~5.54 kpc) differs significantly from the median photometric distance (~4.07 kpc).

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 2503 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	–	91.359	11.995	0.18	0.267	-0.213	46.858
Hu & Soubiran	2025	91.342	11.969	–	–	–	–
Zhang et al.	2024	91.395	11.953	–	–	–	–
Hunt & Reffert	2024	91.395	11.953	0.18	0.251	-0.245	3.215
Cavallo et al.	2024	91.342	11.969	0.176	–	–	–
Hunt & Reffert	2023	91.395	11.953	0.18	0.251	-0.245	3.215
He et al.	2023	91.414	12.099	0.228	0.262	-0.24	–

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.350*	–	–	–
Zhang et al.	2024	–	–	–	–	-0.189*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	196*	–	–
Cavallo et al.	2024	3.68	0.93	–	933	0.020	–	–	–
Hunt & Reffert	2023	5.10	1.21	1.35	601	–	–	–	–
He et al.	2023	4.07	1.40	–	794	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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