FSR 1648

(MWSC 2109)

0.11 UTI

0.0

C_N

0.11

C_dens

0.12

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.9 [pc], 0.5 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 0.12 Very low quality
C_lit 0.16 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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FSR 1648 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by low extinction. It is catalogued as a low-mass, intermediate-age cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~2.44 kpc) differs significantly from the median photometric distance (~1.05 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 Low mass Intermediate age

Data

🔍 Search references for FSR 1648 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	99999–	199.943	-56.363	0.41	-6.937	-2.255	-23.474
Just et al.	2023	199.935	-56.348	–	–	–	–
Bica et al.	2019	199.955	-56.354	–	–	–	–
Dib et al.	2018	199.945	-56.351	–	–	–	–
Joshi et al.	2016	199.945	-56.351	–	–	–	–
Kharchenko et al.	2016	199.935	-56.348	–	–	–	–
Kharchenko et al.	2013	199.945	-56.351	–	-5.46	-1.78	–
Froebrich et al.	2007	199.946	-56.351	–	–	–	–

💡 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]	B_frac	BSS
UCC	99999–	1.05	0.92	–	219	–	24	–	–
Just et al.	2023	–	–	–	219	–	24	–	–
Dib et al.	2018	1.05	–	–	219	–	–	–	–
Joshi et al.	2016	1.05	0.92	–	219	–	–	–	–
Kharchenko et al.	2016	1.05	0.92	–	219	–	–	–	–
Kharchenko et al.	2013	1.05	0.92	–	219	–	–	–	–

Visualization

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