CWNU 1755

0.23 UTI

0.35

C_N

0.18

C_dens

0.25

C_C3

0.19

C_lit

1.0

C_dup

N_m (P>50%) 35

Core radius and density 2.3 [pc], 0.9 [pc^-2]

C3 classification DB

C_N 0.35 Poorly populated
C_dens 0.18 Very loose
C_C3 0.25 Low quality
C_lit 0.19 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 1755 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near 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.

⚠️ 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 Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.01 (50th percentile), false positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.01 (50th percentile), false positive (human-assigned).

Data

🔍 Search references for CWNU 1755 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–	97.571	10.004	0.289	0.858	-1.438	37.906
Zhang et al.	2024	97.579	10.01	–	–	–	–
Hunt & Reffert	2024	97.579	10.01	0.287	0.861	-1.438	49.923
Cavallo et al.	2024	97.548	10.021	0.284	–	–	–
Hunt & Reffert	2023	97.579	10.01	0.287	0.861	-1.438	49.923
He et al.	2023	97.577	9.997	0.306	0.872	-1.456	37.91

💡 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–	3.04	2.84	2.75	820	-0.146	522	–	–
Zhang et al.	2024	–	–	–	–	-0.512⁽¹⁾	–	–	–
Hunt & Reffert	2024	2.92	2.59	2.75	846	–	522⁽¹⁾	–	–
Cavallo et al.	2024	4.83	3.09	–	339	0.220	–	–	–
Hunt & Reffert	2023	2.92	2.59	2.75	847	–	–	–	–
He et al.	2023	3.16	3.25	–	794	–	–	–	–

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

Visualization

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