CWNU 1020

(OCSN 165)

0.60 UTI

0.78

C_N

0.61

C_dens

1.0

C_C3

0.31

C_lit

1.0

C_dup

C3 classification AA

Number of members (P>50%) 179

Radius (P>50% members) 59.3 [arcmin]

C_N 0.78 Rich
C_dens 0.61 Moderately dense
C_C3 1.0 Very high quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

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CWNU 1020 is a rich, moderately dense object of very 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 near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.

Very close Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for CWNU 1020 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	–	135.176	-54.888	2.243	-10.627	7.611	16.649
Wei et al.	2025	135.483	-55.032	2.281	-10.732	7.623	–
Cavallo et al.	2024	135.055	-54.879	2.257	–	–	–
Hunt & Reffert	2023	135.006	-54.51	2.244	-10.588	7.608	15.313
Qin et al.	2023	135.33	-55.3	2.26	-10.64	7.61	15.87
He et al.	2022	134.869	-55.029	2.295	-10.63	7.726	–

💡 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
Wei et al.	2025	0.48	0.60	–	16	0.000	234	0.31	–
Cavallo et al.	2024	0.47	0.62	–	15	-0.020	–	–	–
Hunt & Reffert	2023	0.43	0.16	0.69	34	–	–	–	–
Qin et al.	2023	0.51	0.34	–	40	–	–	–	–
He et al.	2022	–	0.45	–	35	–	–	–	–

Visualization

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