CWNU 536

(OCSN 159)

0.31 UTI

0.25

C_N

0.47

C_dens

0.62

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 1.0 [pc], 2.4 [pc^-2]

C3 classification CA

C_N 0.25 Poorly populated
C_dens 0.47 Loose
C_C3 0.62 Intermediate quality
C_lit 0.1 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 536 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption, age, and metallicity parameters (see Parameters). It is rarely studied in the literature.

Very close Low extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G1, along with Alessi_3, CWNU_1265 and CWNU_1031.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.88 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.88 (50th percentile).

Data

🔍 Search references for CWNU 536 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–	105.661	-45.641	3.928	-3.383	3.058	30.959
Cavallo et al.	2024	105.756	-45.363	3.909	–	–	–
Hunt & Reffert	2023	105.662	-45.68	3.918	-3.461	3.002	27.735
Qin et al.	2023	105.94	-45.82	3.92	-3.17	3.14	31.7
He et al.	2022	105.339	-45.043	4.025	-3.612	2.593	–
He et al.	2022	105.582	-45.512	3.95	-3.35	2.99	34.9

💡 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–	0.275	0.32	0.34	79	-0.076	–	–	–
Cavallo et al.	2024	0.27	0.36	–	17	-0.350	–	–	–
Hunt & Reffert	2023	0.25	0.04	0.34	146	–	–	–	–
Qin et al.	2023	0.28	0.32	–	100	–	–	–	–
He et al.	2022	–	0.10	–	63	–	–	–	–
He et al.	2022	0.30	0.63	–	79	0.198	–	–	–

Visualization

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