FSR 0561

(MWSC 166)

0.28 UTI

0.0

C_N

0.01

C_dens

0.62

C_C3

0.38

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 13

Radius (P>50% members) 9.1 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.62 Intermediate 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 0561 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a large^* distance, well above the mid-plane, affected by very high extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~6.49 kpc) differs significantly from the median photometric distance (~1.47 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 Very high extinction Intermediate age

Data

🔍 Search references for FSR 0561 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	–	31.626	67.731	0.154	-1.385	0.33	–
Just et al.	2023	31.46	67.742	–	–	–	–
Bica et al.	2019	31.469	67.748	–	–	–	–
Kharchenko et al.	2016	31.46	67.742	–	–	–	–
Kharchenko et al.	2013	31.474	67.745	–	-3.1	-1.04	–
Kharchenko et al.	2012	31.474	67.745	–	-2.85	-1.74	–
Froebrich et al.	2007	31.475	67.744	–	–	–	–

💡 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	–	–	–	174	–	159	–	–
Kharchenko et al.	2016	1.47	6.45	–	174	–	–	–	–
Kharchenko et al.	2013	1.47	6.45	–	174	–	–	–	–
Kharchenko et al.	2012	3.46	2.90	–	1202	–	–	–	–

Visualization

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