FSR 1583

(MWSC 1953)

0.15 UTI

0.0

C_N

0.02

C_dens

0.25

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 11

Radius (P>50% members) 5.7 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.25 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

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FSR 1583 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 intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~7.15 kpc) differs significantly from the median photometric distance (~1.64 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 Moderate extinction Intermediate age

Data

🔍 Search references for FSR 1583 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	–	172.917	-57.629	0.14	-7.058	2.091	–
Just et al.	2023	172.907	-57.62	–	–	–	–
Kharchenko et al.	2016	172.907	-57.62	–	–	–	–
Kharchenko et al.	2013	172.915	-57.623	–	-11.42	6.02	–
Froebrich et al.	2007	172.938	-57.623	–	–	–	–

💡 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	–	–	–	398	–	168	–	–
Kharchenko et al.	2016	1.64	1.23	–	398	–	–	–	–
Kharchenko et al.	2013	1.64	1.23	–	398	–	–	–	–

Visualization

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