FoF 1221

(LP 1221)

0.04 UTI

0.0

C_N

0.05

C_dens

0.25

C_C3

0.0

C_lit

0.6

C_dup

C3 classification DB

Number of members (P>50%) 14

Radius (P>50% members) 7.5 [arcmin]

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 0.6 Likely unique

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

Overview

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FoF 1221 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~3.61 kpc) differs significantly from the median photometric distance (~2.06 kpc).

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Young

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

Data

🔍 Search references for FoF 1221 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	–	280.554	-6.241	0.277	-0.485	-2.421	11.571
Almeida et al.	2025	280.55	-6.237	–	–	–	–
Dias et al.	2021	280.55	-6.237	0.269	-0.515	-2.415	–

💡 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	2.06	1.93	–	21	–	385	–	–
Dias et al.	2021	2.06	1.93	–	21	0.181	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
NGC 6683	40.0	280.56	-6.22	0.29	-0.34	-2.34	42.83	0.81

💡 Note: The % column shows the percentage of members that FoF 1221 shares with each listed object.

Visualization

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