FoF 1399

(LP 1399)

0.03 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 17

Radius (P>50% members) 11.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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FoF 1399 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

⚠️ 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 Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit.

Data

🔍 Search references for FoF 1399 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	–	107.305	-5.354	0.245	-0.857	0.839	65.03
Almeida et al.	2025	107.377	-5.37	–	–	–	–
Dias et al.	2021	107.377	-5.37	0.266	-0.891	0.857	–
Liu & Pang	2019	107.38	-5.361	0.272	-0.831	0.828	–

💡 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
Almeida et al.	2025	3.54	0.87	–	590	–	1217	–	–
Dias et al.	2021	3.54	0.87	–	590	-0.119	–	–	–
Liu & Pang	2019	–	–	–	661	0.000	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
FoF 1398	32.0	107.2	-5.57	0.23	-0.92	0.71	101.08	0.25

💡 Note: The % column shows the percentage of members that FoF 1399 shares with each listed object.

Visualization

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