CWNU 1280

0.54 UTI

0.61

C_N

1.0

C_dens

0.5

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 72

Stellar density (N₅₀/rad) 6.8 [N/pc²]

C3 classification BB

C_N 0.61 Moderately populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate 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

ℹ️

CWNU 1280 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~5.61 kpc) differs significantly from the median photometric distance (~4.17 kpc).

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

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for CWNU 1280 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	127.023	-34.053	0.178	-3.317	4.177	73.434
Hu & Soubiran	2025	127.02	-34.042	–	–	–	–
Hunt & Reffert	2024	127.029	-34.042	0.188	-3.317	4.182	73.148
Cavallo et al.	2024	127.02	-34.042	0.193	–	–	–
Hunt & Reffert	2023	127.029	-34.042	0.188	-3.317	4.182	73.148
He et al.	2023	127.028	-34.06	0.2	-3.315	4.18	72.04

💡 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–	4.17	1.4	1.76	525	-0.490	589	–	–
Hu & Soubiran	2025	–	–	–	–	-0.240⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	589⁽¹⁾	–	–
Cavallo et al.	2024	3.33	1.84	–	525	-0.740	–	–	–
Hunt & Reffert	2023	4.55	1.40	1.76	417	–	–	–	–
He et al.	2023	4.17	1.35	–	631	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CKCWDM 54944	93.1	127.02	-34.06	0.18	-3.31	4.18	72.74	0.06

💡 Note: The % column shows the percentage of members that CWNU 1280 shares with each listed object.

Visualization

ℹ️

1 2