CWNU 155

0.63 UTI

0.56

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 63

Stellar density (N₅₀/rad) 21.2 [N/pc²]

C3 classification AA

C_N 0.56 Moderately 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 155 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is poorly studied in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 60 along with HXHWL_7.

Palma et al. (2025)
Classified as optical pair P316, along with HXHWL_7.

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for CWNU 155 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–	273.451	-21.061	0.777	0.829	-0.946	-7.244
Hunt & Reffert	2024	273.462	-21.062	0.769	0.839	-0.923	19.64
Cavallo et al.	2024	273.468	-21.066	0.771	–	–	–
Hunt & Reffert	2023	273.462	-21.062	0.769	0.839	-0.923	19.64
He et al.	2022	273.452	-21.08	0.78	0.81	-0.95	–

💡 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–	1.47	1.045	1.09	13	0.072	357	–	–
Liu et al.	2025	1.80	0.33	–	12	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	357⁽¹⁾	–	–
Cavallo et al.	2024	1.36	1.40	–	18	-0.600	–	–	–
Hunt & Reffert	2023	1.21	0.95	1.09	14	–	–	–	–
He et al.	2022	1.58	1.14	–	10	0.744	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14149	47.6	273.45	-21.07	0.78	0.8	-0.93	-24.18	0.0

💡 Note: The % column shows the percentage of members that CWNU 155 shares with each listed object.

Visualization

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