MWSC 4140

0.30 UTI

0.45

C_N

0.42

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 45

Radius (P>50% members) 6.7 [arcmin]

C_N 0.45 Poorly populated
C_dens 0.42 Loose
C_C3 0.12 Very low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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MWSC 4140 is a poorly populated, loose object of very low C3 quality. Its parallax locates it at a moderate distance, well below the mid-plane, affected by moderate extinction. It is catalogued as a massive, old cluster (see Parameters). It is poorly studied 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.

Relatively close Moderate extinction Massive Old

Data

🔍 Search references for MWSC 4140 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	–	144.093	-77.483	0.42	-3.065	3.272	21.014
Just et al.	2023	144.15	-77.476	–	–	–	–
Bica et al.	2019	144.156	-77.479	–	–	–	–
Kharchenko et al.	2016	144.15	-77.476	–	–	–	–
Scholz et al.	2015	144.15	-77.48	–	-3.25	3.26	–

💡 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]	Bfr	BSS
Just et al.	2023	–	–	–	1905	–	2203	–	–
Kharchenko et al.	2016	2.46	1.35	–	1905	–	–	–	–
Scholz et al.	2015	2.46	1.35	–	1905	–	–	–	–

Visualization

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