CWNU 1173

(OCSN 184)

0.57 UTI

0.26

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 26

Stellar density (N₅₀/rad) 8.7 [N/pc²]

C3 classification AA

C_N 0.26 Poorly populated
C_dens 1.0 Very dense
C_C3 1.0 Very high 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 1173 is a poorly populated, very 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

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 99 along with CWNU_1256, and as primordial binary cluster 323 along with OCSN_89, and of multiple system 36 along with CWNU_1256 and OCSN_89.

Palma et al. (2025)
Classified as genetic pair P196, along with CWNU_1256.

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for CWNU 1173 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–	179.897	-70.2	2.277	-13.182	-0.801	7.351
Liu et al.	2025	179.92	-70.29	2.24	-13.03	-0.62	5.45
Cavallo et al.	2024	178.989	-70.126	2.251	–	–	–
Hunt & Reffert	2023	179.922	-70.286	2.244	-13.031	-0.622	5.449
Qin et al.	2023	179.64	-70.33	2.25	-13.27	-0.51	4.38
He et al.	2022	179.942	-70.323	2.29	-13.198	-0.811	–

💡 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–	0.495	0.78	0.99	35	0.230	–	–	–
Liu et al.	2025	0.53	0.20	–	47	–	–	–	–
Cavallo et al.	2024	0.46	0.91	–	23	0.230	–	–	–
Hunt & Reffert	2023	0.42	0.50	0.99	100	–	–	–	–
Qin et al.	2023	0.61	0.78	–	35	–	–	–	–
He et al.	2022	–	0.80	–	22	–	–	–	–

Visualization

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