Dias 38

0.06 UTI

0.0

C_N

0.03

C_dens

0.38

C_C3

0.0

C_lit

0.76

C_dup

N₅₀ (P>50% members) 14

Stellar density (N₅₀/rad) 0.1 [N/pc²]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 0.76 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Dias 38 is a sparse, very loose object of low C3 quality. Its parallax locates it at a very large^* distance, well above the mid-plane, affected by moderate 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 (~10.06 kpc) differs significantly from the median photometric distance (~6.83 kpc).

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

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.76) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Very distant Moderate extinction Near-solar metallicity Intermediate age

Data

🔍 Search references for Dias 38 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–	324.227	56.686	0.099	-2.543	-2.08	–
Dias & Monteiro	2025	324.219	56.679	0.103	-2.526	-2.044	–

💡 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–	6.83	2.9	–	916	-0.178	–	–	–
Dias & Monteiro	2025	6.83	2.90	–	916	-0.178	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3149	24.0	324.25	56.67	0.11	-2.75	-2.08	–	0.16

💡 Note: The % column shows the percentage of members that Dias 38 shares with each listed object.

Visualization

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