FSR 1031

(MWSC 883)

0.14 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.29

C_lit

1.0

C_dup

N_m (P>50%) 15

Core radius and density 3.2 [pc], 0.06 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.29 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 1031 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.73 kpc) differs significantly from the median photometric distance (~1.79 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 Moderate extinction Intermediate age

Data

🔍 Search references for FSR 1031 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–	97.558	3.379	0.212	-0.084	-0.116	–
Just et al.	2023	97.568	3.391	–	–	–	–
Bica et al.	2019	97.553	3.399	–	–	–	–
Dias et al.	2018	–	–	–	1.02	0.14	–
Dib et al.	2018	97.575	3.39	–	–	–	–
Sampedro et al.	2017	97.55	3.393	–	-19.64	21.94	–
Joshi et al.	2016	97.575	3.39	–	–	–	–
Kharchenko et al.	2016	97.568	3.391	–	–	–	–
Dias et al.	2014	97.55	3.393	–	-2.44	-4.01	–
Kharchenko et al.	2013	97.575	3.39	–	0.77	-2.72	–
Froebrich et al.	2007	97.55	3.393	–	–	–	–
Dias et al.	2002	97.55	3.393	–	0.77	-2.72	–

💡 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–	1.79	2.3	–	432	–	367	–	–
Just et al.	2023	–	–	–	432	–	367	–	–
Dib et al.	2018	1.79	–	–	432	–	–	–	–
Joshi et al.	2016	1.79	2.30	–	432	–	–	–	–
Kharchenko et al.	2016	1.79	2.30	–	432	–	–	–	–
Kharchenko et al.	2013	1.79	2.30	–	432	–	–	–	–
Dias et al.	2002	1.79	2.30	–	432	–	–	–	–

Visualization

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