FSR 1680

(MWSC 2219)

0.15 UTI

0.0

C_N

0.13

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 19

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

C_N 0.0 Sparse
C_dens 0.13 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

ℹ️

FSR 1680 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, near 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 (~2.87 kpc) differs significantly from the median photometric distance (~1.46 kpc).

⚠️ 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.

Relatively close Moderate extinction Low mass Intermediate age

Data

🔍 Search references for FSR 1680 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	217.059	-59.991	0.349	-6.954	-3.743	-35.769
Just et al.	2023	217.127	-60.018	–	–	–	–
Kharchenko et al.	2016	217.127	-60.018	–	–	–	–
Kharchenko et al.	2013	217.14	-60.02	–	-3.28	-6.4	–
Froebrich et al.	2007	217.137	-60.019	–	–	–	–

💡 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	–	–	–	389	–	41	–	–
Kharchenko et al.	2016	1.46	1.74	–	389	–	–	–	–
Kharchenko et al.	2013	1.46	1.74	–	389	–	–	–	–

Visualization

ℹ️