FSR 0121

(MWSC 2863)

0.17 UTI

0.36

C_N

0.03

C_dens

0.38

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 36

Core radius and density 3.6 [pc], 0.1 [pc^-2]

C3 classification BC

C_N 0.36 Poorly populated
C_dens 0.03 Very loose
C_C3 0.38 Low quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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FSR 0121 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, well above the mid-plane. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 7 years.

(*): The parallax distance estimate (~4.65 kpc) differs significantly from the median photometric distance (~1.52 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 Old

Data

🔍 Search references for FSR 0121 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	99999–	274.085	17.424	0.215	-2.779	-5.843	-4.464
Bica et al.	2019	274.073	17.445	–	–	–	–
Dib et al.	2018	274.077	17.45	–	–	–	–
Froebrich et al.	2007	274.071	17.45	–	–	–	–

💡 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]	B_frac	BSS
UCC	99999–	1.52	–	–	2818	–	–	–	–
Dib et al.	2018	1.52	–	–	2818	–	–	–	–

Visualization

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