FSR 1339

(MWSC 1416)

0.17 UTI

0.0

C_N

0.23

C_dens

0.0

C_C3

0.31

C_lit

1.0

C_dup

C3 classification DD

Number of members (P>50%) 20

Radius (P>50% members) 5.1 [arcmin]

C_N 0.0 Sparse
C_dens 0.23 Very loose
C_C3 0.0 Very 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 1339 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~2.80 kpc) differs significantly from the median photometric distance (~4.17 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 Massive Intermediate age

Data

🔍 Search references for FSR 1339 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	–	120.421	-30.741	0.357	-3.356	2.042	58.588
Just et al.	2023	120.422	-30.707	–	–	–	–
Bica et al.	2019	120.429	-30.732	–	–	–	–
Kharchenko et al.	2016	120.422	-30.707	–	–	–	–
Kharchenko et al.	2013	120.427	-30.71	–	-0.67	-1.61	–
Froebrich et al.	2007	120.433	-30.729	–	–	–	–

💡 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	–	–	–	977	–	1496	–	–
Kharchenko et al.	2016	4.17	1.94	–	977	–	–	–	–
Kharchenko et al.	2013	4.17	1.94	–	977	–	–	–	–

Visualization

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