OCSN 198

0.46 UTI

0.29

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 29

Stellar density (N₅₀/rad) 7.2 [N/pc²]

C3 classification AA

C_N 0.29 Poorly populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OCSN 198 is a poorly populated, very dense object of very high C3 quality. Its parallax locates it at a very close^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a young cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~0.39 kpc) differs significantly from the median photometric distance (~1.32 kpc).

Relatively close Moderate extinction Young

Data

🔍 Search references for OCSN 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–	125.091	-49.512	2.57	-5.93	7.886	14.409
Qin et al.	2023	125.08	-49.47	2.55	-5.9	7.84	19.94

💡 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–	1.32	2.82	–	25	–	–	–	–
Qin et al.	2023	1.32	2.82	–	25	–	–	–	–

Visualization

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