FSR 0503

(SAI 7; MWSC 51)

0.09 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 5.6 [pc], 0.07 [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 0.16 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FSR 0503 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by moderate extinction. It is catalogued as a massive, old cluster (see Parameters). It is rarely 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 Moderate extinction Massive Old

Data

🔍 Search references for FSR 0503 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–	7.431	68.916	0.193	-1.612	0.334	–
Just et al.	2023	7.347	68.89	–	–	–	–
Bica et al.	2019	7.287	68.935	–	–	–	–
Kharchenko et al.	2016	7.347	68.89	–	–	–	–
Kharchenko et al.	2013	7.357	68.894	–	0.53	1.02	–
Kharchenko et al.	2012	7.357	68.894	–	0.53	1.02	–
Glushkova et al.	2010	7.297	68.936	–	–	–	–
Froebrich et al.	2007	7.358	68.906	–	–	–	–

💡 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–	4.7	2.52	–	1514	–	2070	–	–
Just et al.	2023	–	–	–	1514	–	2070	–	–
Kharchenko et al.	2016	4.70	2.52	–	1514	–	–	–	–
Kharchenko et al.	2013	4.70	2.52	–	1514	–	–	–	–
Kharchenko et al.	2012	4.70	2.52	–	1514	–	–	–	–
Glushkova et al.	2010	2.40	2.59	–	2512	–	–	–	–

Visualization

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