CWNU 2051

0.23 UTI

0.0

C_N

0.26

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 18

Stellar density (N₅₀/rad) 1.3 [N/pc²]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.26 Loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

CWNU 2051 is a sparse, loose object of low 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, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It was recently reported in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant High extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G134, along with Kronberger_25 and HSC_198.

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for CWNU 2051 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	276.228	-14.403	0.28	-0.5	-2.694	31.775
Hunt & Reffert	2024	276.29	-14.418	0.284	-0.517	-2.676	–
Cavallo et al.	2024	276.254	-14.413	0.284	–	–	–
Hunt & Reffert	2023	276.29	-14.418	0.284	-0.517	-2.676	–
He et al.	2023	276.247	-14.376	0.278	-0.501	-2.681	–

💡 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–	3.11	4.4	2.22	137	0.310	869	–	–
Hunt & Reffert	2024	–	–	–	–	–	869⁽¹⁾	–	–
Cavallo et al.	2024	3.52	4.51	–	56	0.310	–	–	–
Hunt & Reffert	2023	3.11	4.38	2.22	137	–	–	–	–
He et al.	2023	2.95	4.40	–	501	–	–	–	–

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

Visualization

ℹ️

1 2