FoF 198

(LP 198)

0.69 UTI

0.8

C_N

1.0

C_dens

0.75

C_C3

0.45

C_lit

1.0

C_dup

N₅₀ (P>50% members) 246

Stellar density (N₅₀/rad) 11.7 [N/pc²]

C3 classification AB

C_N 0.8 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.45 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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FoF 198 is a rich, very dense object of high 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, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

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

Data

🔍 Search references for FoF 198 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–	112.123	-20.117	0.292	-2.25	2.507	67.724
Almeida et al.	2025	112.131	-20.109	–	–	–	–
Hunt & Reffert	2024	112.13	-20.117	0.31	-2.253	2.506	67.753
Cavallo et al.	2024	112.133	-20.12	0.308	–	–	–
Hunt & Reffert	2023	112.13	-20.117	0.31	-2.253	2.506	67.753
Almeida et al.	2023	112.128	-20.107	–	–	–	–
Dias et al.	2021	112.131	-20.109	0.265	-2.262	2.505	–
Cantat-Gaudin et al.	2020	112.127	-20.107	0.278	-2.262	2.497	–
Liu & Pang	2019	112.115	-20.1	0.31	-1.972	2.311	–

💡 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–	2.84	1.185	2.06	276	-0.168	886	0.64	–
Almeida et al.	2025	2.84	1.19	–	294	–	488	–	–
Hunt & Reffert	2024	–	–	–	–	–	886⁽¹⁾	–	–
Cavallo et al.	2024	2.82	1.29	–	170	-0.160	–	–	–
Hunt & Reffert	2023	2.85	0.91	2.06	173	–	–	–	–
Almeida et al.	2023	2.84	1.18	–	276	-0.127	916⁽¹⁾	0.64	–
Dias et al.	2021	2.84	1.19	–	294	-0.176	–	–	–
Cantat-Gaudin et al.	2020	3.22	0.54	–	257	–	–	–	–
Liu & Pang	2019	–	–	–	537	-0.750	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 635	76.4	112.12	-20.13	0.32	-2.23	2.48	67.72	0.06
UBC 223	74.4	112.12	-20.11	0.29	-2.25	2.52	67.72	0.0

💡 Note: The % column shows the percentage of members that FoF 198 shares with each listed object.

Visualization

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