CWNU 2651

0.24 UTI

0.26

C_N

0.33

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 1.2 [pc], 1.6 [pc^-2]

C3 classification BB

C_N 0.26 Poorly populated
C_dens 0.33 Loose
C_C3 0.5 Intermediate quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 2651 is a poorly populated, loose object of intermediate 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 (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 Very young

Palma et al. (2025)
Part of multiple system G198, along with HSC_880, CWNU_2203 and Markarian_50.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.24 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.24 (50th percentile).

Data

🔍 Search references for CWNU 2651 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–	347.218	59.404	0.331	-3.673	-2.925	–
Hunt & Reffert	2024	347.219	59.404	0.327	-3.683	-2.924	–
Cavallo et al.	2024	347.185	59.429	0.326	–	–	–
Hunt & Reffert	2023	347.219	59.404	0.327	-3.683	-2.924	–
He et al.	2023	347.217	59.41	0.345	-3.692	-2.918	–

💡 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–	3.075	3.55	2.65	5	0.490	892	–	–
Hunt & Reffert	2024	2.84	3.52	2.65	5	–	892⁽¹⁾	–	–
Cavallo et al.	2024	3.48	3.58	–	27	0.490	–	–	–
Hunt & Reffert	2023	2.84	3.52	2.65	5	–	–	–	–
He et al.	2023	3.31	4.35	–	5	–	–	–	–

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

Visualization

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