FSR 1629

(MWSC 2049)

0.26 UTI

0.0

C_N

0.43

C_dens

0.25

C_C3

0.31

C_lit

1.0

C_dup

C3 classification CC

Number of members (P>50%) 22

Radius (P>50% members) 4.8 [arcmin]

C_N 0.0 Sparse
C_dens 0.43 Loose
C_C3 0.25 Low quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

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FSR 1629 is a sparse, loose object of low C3 quality. Its parallax locates it at a moderate^* distance, well below the mid-plane, affected by low extinction. It is catalogued as a massive, very old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~2.30 kpc) differs significantly from the median photometric distance (~3.60 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.

Distant Low extinction Massive Very old

Data

🔍 Search references for FSR 1629 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	–	188.424	-80.992	0.435	-10.027	-0.617	–
Just et al.	2023	188.713	-80.947	–	–	–	–
Bica et al.	2019	188.727	-80.97	–	–	–	–
Kharchenko et al.	2016	188.713	-80.947	–	–	–	–
Kharchenko et al.	2013	188.73	-80.95	–	-9.08	-1.46	–
Froebrich et al.	2007	188.729	-80.973	–	–	–	–

💡 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	–	–	–	5012	–	3556	–	–
Kharchenko et al.	2016	3.60	0.19	–	5012	–	–	–	–
Kharchenko et al.	2013	3.60	0.19	–	5012	–	–	–	–

Visualization

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