FSR 0531

(MWSC 125)

0.20 UTI

0.0

C_N

0.13

C_dens

0.25

C_C3

0.31

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 24

Radius (P>50% members) 5.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.13 Very loose
C_C3 0.25 Low quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

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FSR 0531 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, well above the mid-plane, affected by low extinction. It is catalogued as an 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.

Distant Low extinction Old

Data

🔍 Search references for FSR 0531 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	–	23.437	74.745	0.255	-2.071	0.124	-78.216
Just et al.	2023	23.341	74.739	–	–	–	–
Kharchenko et al.	2016	23.341	74.739	–	–	–	–
Kharchenko et al.	2013	23.355	74.742	–	3.39	-2.08	–
Kharchenko et al.	2012	23.355	74.742	–	3.39	-2.08	–
Froebrich et al.	2007	23.479	74.765	–	–	–	–

💡 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	–	–	–	2512	–	793	–	–
Kharchenko et al.	2016	3.90	0.45	–	2512	–	–	–	–
Kharchenko et al.	2013	3.90	0.45	–	2512	–	–	–	–
Kharchenko et al.	2012	3.90	0.45	–	2512	–	–	–	–

Visualization

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