UBC 198

0.72 UTI

0.74

C_N

0.93

C_dens

0.75

C_C3

0.6

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 98

Radius (P>50% members) 8.1 [arcmin]

C_N 0.74 Moderately populated
C_dens 0.93 Very dense
C_C3 0.75 High quality
C_lit 0.6 Moderately studied
C_dup 1.0 Unique

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

Overview

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UBC 198 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

Relatively close Moderate extinction Near-solar metallicity Young

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 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	–	82.102	35.74	0.513	-0.025	-1.977	-24.061
Li et al.	2025	82.109	35.736	0.524	0.016	-1.935	–
Almeida et al.	2025	82.123	35.701	–	–	–	–
Zhang et al.	2024	82.093	35.806	–	–	–	–
Hunt & Reffert	2024	82.093	35.806	0.511	-0.009	-1.991	-24.084
Cavallo et al.	2024	82.108	35.708	0.512	–	–	–
Hunt & Reffert	2023	82.093	35.806	0.511	-0.009	-1.991	-24.084
Almeida et al.	2023	82.131	35.697	–	–	–	–
Dias et al.	2021	82.123	35.701	0.506	0.037	-1.969	–
Cantat-Gaudin et al.	2020	82.109	35.736	0.524	0.016	-1.935	–
Castro-Ginard et al.	2020	82.126	35.718	0.52	0.018	-1.936	–

💡 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
Li et al.	2025	1.88	1.27	–	32	-0.030	–	–	–
Almeida et al.	2025	1.74	1.47	–	19	–	447	–	–
Zhang et al.	2024	–	–	–	–	-0.273*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	601*	–	–
Cavallo et al.	2024	1.86	1.38	–	95	0.070	–	–	–
Hunt & Reffert	2023	1.83	1.19	2.18	99	–	–	–	–
Almeida et al.	2023	1.80	1.49	–	30	-0.122	883*	0.53	–
Dias et al.	2021	1.74	1.47	–	19	-0.153	–	–	–
Cantat-Gaudin et al.	2020	1.75	0.66	–	275	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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