FSR 1657

(MWSC 2127)

0.24 UTI

0.0

C_N

0.05

C_dens

0.25

C_C3

0.44

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 24

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

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.25 Low quality
C_lit 0.44 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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FSR 1657 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large distance, 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.

Very distant Moderate extinction Very massive Old

Data

🔍 Search references for FSR 1657 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	–	202.507	-58.736	0.194	-7.942	-1.047	-23.217
Just et al.	2023	202.496	-58.727	–	–	–	–
Bica et al.	2019	202.506	-58.747	–	–	–	–
Kharchenko et al.	2016	202.496	-58.727	–	–	–	–
Dias et al.	2014	202.504	-58.742	–	-7.02	-0.35	–
Kharchenko et al.	2013	202.507	-58.73	–	-10.04	3.48	–
Froebrich et al.	2007	202.504	-58.742	–	–	–	–
Dias et al.	2002	202.504	-58.742	–	-7.02	-0.35	–

💡 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	–	–	–	1000	–	5888	–	–
Kharchenko et al.	2016	5.41	2.26	–	1000	–	–	–	–
Kharchenko et al.	2013	5.41	2.26	–	1000	–	–	–	–
Dias et al.	2002	5.41	2.26	–	1000	–	–	–	–

Visualization

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