CWNU 287

(OCSN 151)

0.62 UTI

0.52

C_N

1.0

C_dens

0.75

C_C3

0.4

C_lit

1.0

C_dup

N₅₀ (P>50% members) 55

Stellar density (N₅₀/rad) 10.8 [N/pc²]

C3 classification BA

C_N 0.52 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.4 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 287 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a metal-rich, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is poorly studied in the literature.

Very close Low extinction Metal-rich Young

Palma et al. (2025)
Classified as optical pair P275, along with BH_99.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 287 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–	155.257	-55.925	2.282	-14.53	2.433	9.637
Wei et al.	2025	155.429	-55.984	2.228	-14.658	2.509	–
Hunt & Reffert	2024	155.3	-55.972	2.284	-14.537	2.438	14.469
Cavallo et al.	2024	155.284	-55.894	2.286	–	–	–
Hunt & Reffert	2023	155.3	-55.972	2.284	-14.537	2.438	14.469
Qin et al.	2023	155.21	-55.94	2.28	-14.49	2.47	8.92
He et al.	2022	154.79	-55.861	2.266	-14.409	2.718	–
He et al.	2022	155.233	-55.977	2.28	-14.5	2.51	12.2

💡 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–	0.46	0.335	0.51	54	0.500	68	0.32	–
Wei et al.	2025	0.58	0.37	–	59	0.500	90	0.32	–
Hunt & Reffert	2024	–	–	–	–	–	45⁽¹⁾	–	–
Cavallo et al.	2024	0.42	0.77	–	132	-0.190	–	–	–
Hunt & Reffert	2023	0.42	0.13	0.51	100	–	–	–	–
Qin et al.	2023	0.57	0.53	–	32	–	–	–	–
He et al.	2022	–	0.30	–	35	–	–	–	–
He et al.	2022	0.46	0.30	–	50	0.537	–	–	–

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

Visualization

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