CWNU 1303

0.56 UTI

0.47

C_N

1.0

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 47

Stellar density (N₅₀/rad) 6.0 [N/pc²]

C3 classification BA

C_N 0.47 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 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 1303 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.

Relatively close High extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 105 along with PHOC_18.

Palma et al. (2025)
Part of multiple system G38, along with BH_222, PHOC_18, HSC_2889 and CWNU_2342.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 1303 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–	261.212	-37.765	0.426	-0.108	-1.2	41.225
Hunt & Reffert	2024	261.237	-37.741	0.429	-0.098	-1.215	69.038
Cavallo et al.	2024	261.192	-37.768	0.429	–	–	–
Hunt & Reffert	2023	261.237	-37.741	0.429	-0.098	-1.215	69.038
He et al.	2023	261.21	-37.759	0.425	-0.103	-1.2	–

💡 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–	2.28	3.215	2.49	8	0.420	747	–	–
Liu et al.	2025	5.60	1.01	–	8	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	747⁽¹⁾	–	–
Cavallo et al.	2024	2.21	3.23	–	11	0.420	–	–	–
Hunt & Reffert	2023	2.22	3.20	2.49	7	–	–	–	–
He et al.	2023	2.34	3.65	–	5	–	–	–	–

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

Visualization

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