FSR 0809

(MWSC 471)

0.19 UTI

0.0

C_N

0.08

C_dens

0.12

C_C3

0.38

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 18

Radius (P>50% members) 8.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.08 Very loose
C_C3 0.12 Very low quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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FSR 0809 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 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.

Relatively close Moderate extinction Old

Data

🔍 Search references for FSR 0809 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	–	76.968	27.515	0.379	1.013	-2.701	-8.132
Just et al.	2023	77.042	27.535	–	–	–	–
Bica et al.	2019	77.004	27.507	–	–	–	–
Kharchenko et al.	2016	77.042	27.535	–	–	–	–
Kharchenko et al.	2013	77.05	27.535	–	2.65	-0.37	–
Kharchenko et al.	2012	77.05	27.535	–	2.65	-0.37	–
Froebrich et al.	2007	77.004	27.511	–	–	–	–

💡 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	–	–	–	1585	–	142	–	–
Kharchenko et al.	2016	2.50	2.70	–	1585	–	–	–	–
Kharchenko et al.	2013	2.50	2.70	–	1585	–	–	–	–
Kharchenko et al.	2012	2.50	2.70	–	1585	–	–	–	–

Visualization

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