FSR 1623

(MWSC 2052)

0.23 UTI

0.0

C_N

0.01

C_dens

0.5

C_C3

0.31

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 10

Radius (P>50% members) 7.6 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.5 Intermediate 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 1623 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as an extremely massive, intermediate-age 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 Extremely massive Intermediate age

Data

🔍 Search references for FSR 1623 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	–	189.03	-66.925	0.124	-6.51	0.106	65.187
Just et al.	2023	189.023	-66.939	–	–	–	–
Bica et al.	2019	189.033	-66.937	–	–	–	–
Kharchenko et al.	2016	189.023	-66.939	–	–	–	–
Kharchenko et al.	2013	189.033	-66.942	–	-3.72	-3.94	–
Froebrich et al.	2007	189.033	-66.942	–	–	–	–

💡 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	–	–	–	794	–	12942	–	–
Kharchenko et al.	2016	6.92	1.94	–	794	–	–	–	–
Kharchenko et al.	2013	6.92	1.94	–	794	–	–	–	–

Visualization

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