Dias 161

0.19 UTI

0.28

C_N

0.07

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 28

Stellar density (N₅₀/rad) 0.3 [N/pc²]

C3 classification AC

C_N 0.28 Poorly populated
C_dens 0.07 Very loose
C_C3 0.62 Intermediate 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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Dias 161 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a very large^* distance, well below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~13.72 kpc) differs significantly from the median photometric distance (~9.90 kpc).

⚠️ 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.

Very distant Low extinction Near-solar metallicity Intermediate age

Data

🔍 Search references for Dias 161 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–	113.277	-33.971	0.073	-0.943	1.996	97.344
Dias et al.	2026	113.277	-33.981	0.069	-0.949	1.954	–

💡 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–	9.9	0.84	–	794	-0.060	–	–	–
Dias et al.	2026	9.90	0.84	–	794	-0.060	–	–	–

Visualization

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