FSR 1569

(MWSC 1935)

0.18 UTI

0.0

C_N

0.01

C_dens

0.25

C_C3

0.31

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 12

Radius (P>50% members) 6.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 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 1569 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~7.43 kpc) differs significantly from the median photometric distance (~3.34 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.

Distant Moderate extinction Old

Data

🔍 Search references for FSR 1569 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	–	170.136	-56.816	0.135	-5.608	1.635	21.74
Just et al.	2023	170.084	-56.813	–	–	–	–
Bica et al.	2019	170.093	-56.83	–	–	–	–
Kharchenko et al.	2016	170.084	-56.813	–	–	–	–
Kharchenko et al.	2013	170.092	-56.817	–	-4.09	5.03	–
Froebrich et al.	2007	170.092	-56.826	–	–	–	–

💡 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	–	687	–	–
Kharchenko et al.	2016	3.34	1.29	–	1585	–	–	–	–
Kharchenko et al.	2013	3.34	1.29	–	1585	–	–	–	–

Visualization

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