FSR 0940

(MWSC 809)

0.17 UTI

0.0

C_N

0.08

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 20

Radius (P>50% members) 7.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.08 Very loose
C_C3 0.25 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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FSR 0940 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, old cluster (see Parameters). It is poorly studied in the literature, with no articles listed in the last 6 years.

(*): The parallax distance estimate (~3.17 kpc) differs significantly from the median photometric distance (~2.42 kpc).

⚠️ 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 Low extinction Near-solar metallicity Old

Data

🔍 Search references for FSR 0940 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	–	93.578	14.813	0.315	-0.527	-1.043	–
Donor et al.	2020	93.562	14.8	–	0.47	-2.51	71.8
Bica et al.	2019	93.57	14.81	–	–	–	–
Froebrich et al.	2007	93.567	14.805	–	–	–	–
Dias et al.	2002	93.567	14.805	–	0.78	-0.39	–

💡 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
Donor et al.	2020	–	–	–	–	-0.230	–	–	–
Dias et al.	2002	2.42	0.78	–	2512	–	–	–	–

Visualization

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