CWNU 2280

0.19 UTI

0.0

C_N

0.26

C_dens

0.62

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 20

Core radius and density 1.1 [pc], 1.3 [pc^-2]

C3 classification CA

C_N 0.0 Sparse
C_dens 0.26 Loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

CWNU 2280 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as an 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 Moderate extinction Intermediate age

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.66 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.66 (50th percentile).

Data

🔍 Search references for CWNU 2280 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	170.089	-61.164	0.232	-7.042	2.271	12.218
Hunt & Reffert	2024	170.076	-61.148	0.234	-7.026	2.26	18.02
Hunt & Reffert	2023	170.076	-61.148	0.234	-7.026	2.26	18.02
He et al.	2023	170.124	-61.167	0.232	-7.05	2.276	–

💡 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–	3.91	2.7	1.72	244	–	800	–	–
Hunt & Reffert	2024	3.91	2.70	1.72	244	–	800⁽¹⁾	–	–
Hunt & Reffert	2023	3.91	2.70	1.72	244	–	–	–	–
He et al.	2023	5.37	3.70	–	4	–	–	–	–

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

Visualization

ℹ️

1 2