FSR 0690

(MWSC 456)

0.21 UTI

0.0

C_N

0.04

C_dens

0.25

C_C3

0.38

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 15

Radius (P>50% members) 5.4 [arcmin]

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.25 Low quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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FSR 0690 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 an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~5.62 kpc) differs significantly from the median photometric distance (~1.71 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 Old

Data

🔍 Search references for FSR 0690 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	–	75.784	50.094	0.178	0.304	-1.161	–
Just et al.	2023	75.723	50.1	–	–	–	–
Bica et al.	2019	75.721	50.1	–	–	–	–
Kharchenko et al.	2016	75.723	50.1	–	–	–	–
Kharchenko et al.	2013	75.735	50.1	–	1.53	-5.79	–
Kharchenko et al.	2012	75.735	50.1	–	1.53	-5.79	–
Froebrich et al.	2007	75.717	50.094	–	–	–	–

💡 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	–	127	–	–
Kharchenko et al.	2016	1.71	1.29	–	1000	–	–	–	–
Kharchenko et al.	2013	1.71	1.29	–	1000	–	–	–	–
Kharchenko et al.	2012	1.71	1.29	–	1000	–	–	–	–

Visualization

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