Dias 121

0.03 UTI

0.0

C_N

0.04

C_dens

0.12

C_C3

0.0

C_lit

0.92

C_dup

N₅₀ (P>50% members) 13

Stellar density (N₅₀/rad) 0.2 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.04 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 0.92 Very likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Dias 121 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, above 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.

Note: This is very likely a unique object, which shares a very 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=0.92) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant Moderate extinction Near-solar metallicity Young

Data

🔍 Search references for Dias 121 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	200.744	-60.106	0.305	-5.952	-1.26	-5.985
Dias et al.	2026	200.707	-60.106	0.283	-5.961	-1.274	–

💡 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–	3.2	1.42	–	22	0.100	–	–	–
Dias et al.	2026	3.20	1.42	–	22	0.100	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Loden 821	8.0	201.07	-59.8	0.19	-5.91	-1.15	–	0.19

💡 Note: The % column shows the percentage of members that Dias 121 shares with each listed object.

Visualization

ℹ️