FSR 1689

(MWSC 2254)

0.41 UTI

0.43

C_N

0.39

C_dens

0.62

C_C3

0.31

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 43

Radius (P>50% members) 4.4 [arcmin]

C_N 0.43 Poorly populated
C_dens 0.39 Loose
C_C3 0.62 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

ℹ️

FSR 1689 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.66 kpc) differs significantly from the median photometric distance (~2.28 kpc).

Relatively close Moderate extinction Old

Data

🔍 Search references for FSR 1689 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	221.752	-59.479	0.273	-6.33	-3.925	-36.232
Just et al.	2023	221.711	-59.485	–	–	–	–
Bica et al.	2019	221.703	-59.488	–	–	–	–
Kharchenko et al.	2016	221.711	-59.485	–	–	–	–
Kharchenko et al.	2013	221.722	-59.487	–	-6.01	5.78	–
Froebrich et al.	2007	221.708	-59.487	–	–	–	–

💡 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	–	–	–	1884	–	232	–	–
Kharchenko et al.	2016	2.28	2.58	–	1884	–	–	–	–
Kharchenko et al.	2013	2.28	2.58	–	1884	–	–	–	–

Visualization

ℹ️