CWNU 495

0.35 UTI

0.57

C_N

0.3

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 64

Core radius and density 1.4 [pc], 1.5 [pc^-2]

C3 classification AB

C_N 0.57 Moderately populated
C_dens 0.3 Loose
C_C3 0.75 High 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 495 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P208, along with UBC_1120.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.10 (50th percentile).

Data

🔍 Search references for CWNU 495 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–	317.514	45.027	0.481	-2.608	-3.892	-27.084
Hunt & Reffert	2024	317.52	45.039	0.477	-2.58	-3.893	-32.976
Cavallo et al.	2024	317.477	45.033	0.478	–	–	–
Hunt & Reffert	2023	317.52	45.039	0.477	-2.58	-3.893	-32.976
He et al.	2022	317.495	45.029	0.48	-2.62	-3.9	–

💡 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–	2.235	1.835	2.29	86	0.347	620	–	–
Hunt & Reffert	2024	1.97	1.52	2.29	113	–	620⁽¹⁾	–	–
Cavallo et al.	2024	2.50	2.15	–	60	0.400	–	–	–
Hunt & Reffert	2023	1.97	1.52	2.29	114	–	–	–	–
He et al.	2022	3.55	2.72	–	5	0.295	–	–	–

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

Visualization

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