FSR 0939

(MWSC 781)

0.61 UTI

0.35

C_N

1.0

C_dens

0.38

C_C3

0.65

C_lit

1.0

C_dup

C3 classification CB

Number of members (P>50%) 35

Radius (P>50% members) 2.5 [arcmin]

C_N 0.35 Poorly populated
C_dens 1.0 Very dense
C_C3 0.38 Low quality
C_lit 0.65 Moderately studied
C_dup 1.0 Unique

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

Overview

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FSR 0939 is a poorly populated, very dense object of low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~3.64 kpc) differs significantly from the median photometric distance (~2.40 kpc).

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for FSR 0939 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	–	92.709	14.403	0.275	0.581	-1.891	9.839
Hu & Soubiran	2025	92.705	14.408	–	–	–	–
Hunt & Reffert	2024	92.736	14.397	0.306	0.611	-1.87	9.856
Cavallo et al.	2024	92.705	14.408	0.31	–	–	–
Hunt & Reffert	2023	92.736	14.397	0.306	0.611	-1.87	9.856
Just et al.	2023	92.734	14.397	–	–	–	–
Bica et al.	2019	92.739	14.383	–	–	–	–
Kharchenko et al.	2016	92.734	14.397	–	–	–	–
Dias et al.	2014	92.737	14.383	–	-0.51	0.3	–
Kharchenko et al.	2013	92.742	14.396	–	0.16	1.54	–
Froebrich et al.	2007	92.737	14.383	–	–	–	–
Dias et al.	2002	92.737	14.383	–	-0.51	0.3	–

💡 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
Hu & Soubiran	2025	–	–	–	–	-0.230*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	312*	–	–
Cavallo et al.	2024	2.87	2.15	–	776	0.040	–	–	–
Hunt & Reffert	2023	3.19	2.08	1.39	519	–	–	–	–
Just et al.	2023	–	–	–	513	–	423	–	–
Kharchenko et al.	2016	2.40	2.90	–	513	–	–	–	–
Kharchenko et al.	2013	2.40	2.90	–	513	–	–	–	–
Dias et al.	2002	2.40	2.90	–	513	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 2236	74.3	92.72	14.4	0.29	0.59	-1.88	9.84	0.0

💡 Note: The % column shows the percentage of members that FSR 0939 shares with each listed object.

Visualization

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