FSR 1649

(MWSC 2107)

0.13 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 14

Radius (P>50% members) 7.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very 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 1649 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by moderate extinction. It is catalogued as a very massive, old cluster (see Parameters). It is poorly studied in the literature.

⚠️ 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.

Very distant Moderate extinction Very massive Old

Data

🔍 Search references for FSR 1649 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	–	199.887	-56.164	0.188	-8.907	-1.185	–
Just et al.	2023	199.894	-56.177	–	–	–	–
Kharchenko et al.	2016	199.894	-56.177	–	–	–	–
Kharchenko et al.	2013	199.905	-56.18	–	-5.92	-1.46	–
Froebrich et al.	2007	199.925	-56.154	–	–	–	–

💡 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	–	–	–	1413	–	5508	–	–
Kharchenko et al.	2016	7.09	2.39	–	1413	–	–	–	–
Kharchenko et al.	2013	7.09	2.39	–	1413	–	–	–	–

Visualization

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