FSR 1366

(MWSC 1631)

0.16 UTI

0.0

C_N

0.05

C_dens

0.12

C_C3

0.31

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 20

Radius (P>50% members) 6.5 [arcmin]

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.12 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 1366 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, well above the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.64 kpc) differs significantly from the median photometric distance (~1.51 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 Low extinction Intermediate age

Data

🔍 Search references for FSR 1366 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	–	137.46	-25.474	0.215	-2.423	0.853	108.095
Just et al.	2023	137.478	-25.477	–	–	–	–
Bica et al.	2019	137.489	-25.485	–	–	–	–
Kharchenko et al.	2016	137.478	-25.477	–	–	–	–
Kharchenko et al.	2013	137.484	-25.48	–	-5.07	2.52	–
Froebrich et al.	2007	137.483	-25.489	–	–	–	–

💡 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	–	–	–	501	–	79	–	–
Kharchenko et al.	2016	1.51	0.97	–	501	–	–	–	–
Kharchenko et al.	2013	1.51	0.97	–	501	–	–	–	–

Visualization

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