Dias 21

0.11 UTI

0.3

C_N

0.42

C_dens

0.75

C_C3

0.0

C_lit

0.37

C_dup

N₅₀ (P>50% members) 30

Stellar density (N₅₀/rad) 2.1 [N/pc²]

C3 classification AB

C_N 0.3 Poorly populated
C_dens 0.42 Loose
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.37 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Dias 21 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Distant Moderate extinction Near-solar metallicity Young

Data

🔍 Search references for Dias 21 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–	100.859	-1.26	0.184	-0.473	0.592	63.731
Dias & Monteiro	2025	100.863	-1.248	0.178	-0.423	0.534	–

💡 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–	4.29	1.97	–	54	-0.227	–	–	–
Dias & Monteiro	2025	4.29	1.97	–	54	-0.227	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3470	63.3	100.86	-1.27	0.19	-0.5	0.61	63.73	0.2

💡 Note: The % column shows the percentage of members that Dias 21 shares with each listed object.

Visualization

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