FSR 1688

(MWSC 2233)

0.26 UTI

0.0

C_N

0.03

C_dens

0.38

C_C3

0.44

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 17

Radius (P>50% members) 6.2 [arcmin]

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.38 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 1688 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 low-mass, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~6.24 kpc) differs significantly from the median photometric distance (~1.47 kpc).

Relatively close Moderate extinction Low mass Intermediate age

Data

🔍 Search references for FSR 1688 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	–	218.66	-56.152	0.16	-7.592	-2.249	-99.349
Just et al.	2023	218.643	-56.113	–	–	–	–
Bica et al.	2019	218.659	-56.137	–	–	–	–
Kharchenko et al.	2016	218.643	-56.113	–	–	–	–
Dias et al.	2014	218.654	-56.133	–	-1.64	-0.65	–
Kharchenko et al.	2013	218.655	-56.115	–	-5.36	-2.45	–
Froebrich et al.	2007	218.654	-56.133	–	–	–	–
Dias et al.	2002	218.654	-56.133	–	-1.64	-0.65	–

💡 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	–	–	–	285	–	24	–	–
Kharchenko et al.	2016	1.47	2.55	–	285	–	–	–	–
Kharchenko et al.	2013	1.47	2.55	–	285	–	–	–	–
Dias et al.	2002	1.47	2.55	–	285	–	–	–	–

Visualization

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