CWNU 255

0.30 UTI

0.3

C_N

0.25

C_dens

0.38

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 30

Stellar density (N₅₀/rad) 1.2 [N/pc²]

C3 classification BC

C_N 0.3 Poorly populated
C_dens 0.25 Loose
C_C3 0.38 Low quality
C_lit 0.3 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 255 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a relatively close 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 is poorly studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 255 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–	86.402	33.777	0.73	-1.178	-5.089	12.124
Zhang et al.	2024	86.412	33.777	–	–	–	–
Hunt & Reffert	2024	86.412	33.777	0.724	-1.124	-5.063	6.976
Cavallo et al.	2024	86.373	33.814	0.724	–	–	–
Hunt & Reffert	2023	86.412	33.777	0.724	-1.124	-5.063	6.976
He et al.	2022	86.366	33.76	0.74	-1.16	-5.04	–

💡 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–	1.32	1.02	0.36	363	-0.216	131	–	–
Zhang et al.	2024	–	–	–	–	-0.216⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	131⁽¹⁾	–	–
Cavallo et al.	2024	1.39	1.02	–	363	0.210	–	–	–
Hunt & Reffert	2023	1.32	0.86	0.36	305	–	–	–	–
He et al.	2022	1.12	1.14	–	501	-1.335	–	–	–

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

Visualization

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