Dias 1

(MWSC 67; Alicante 4; Steine 11)

0.78 UTI

0.64

C_N

1.0

C_dens

0.5

C_C3

0.87

C_lit

1.0

C_dup

N₅₀ (P>50% members) 78

Stellar density (N₅₀/rad) 21.4 [N/pc²]

C3 classification BB

C_N 0.64 Moderately populated
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.87 Well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Dias 1 is a moderately populated, very dense object of intermediate 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, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is well-studied in the literature.

Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Dias 1 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	10.623	64.053	0.366	-2.748	-0.579	-46.489
Almeida et al.	2025	10.643	64.066	–	–	–	–
Hunt & Reffert	2024	10.637	64.054	0.366	-2.761	-0.61	-46.472
Cavallo et al.	2024	10.623	64.047	0.367	–	–	–
Hunt & Reffert	2023	10.637	64.054	0.366	-2.761	-0.61	-46.472
Just et al.	2023	10.642	64.057	–	–	–	–
Dias et al.	2021	10.643	64.066	0.378	-2.751	-0.508	–
Cantat-Gaudin et al.	2020	10.63	64.056	0.372	-2.752	-0.523	–
Sánchez et al.	2020	10.646	64.068	–	-2.72	-0.741	–
Cantat-Gaudin & Anders	2020	10.63	64.056	0.372	-2.752	-0.523	–
Bica et al.	2019	10.616	64.045	–	–	–	–
Cantat-Gaudin et al.	2018	10.63	64.056	0.372	-2.752	-0.523	–
Loktin & Popova	2017	10.65	64.068	–	-0.868	0.911	–
Kharchenko et al.	2016	10.642	64.057	–	–	–	–
Dias et al.	2014	10.646	64.068	–	-2.55	-2.0	–
Kharchenko et al.	2013	10.653	64.06	–	-0.86	1.33	–
Kharchenko et al.	2012	10.653	64.06	–	-0.86	1.33	–
Dias et al.	2002	10.646	64.068	–	-2.55	-2.0	–

💡 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–	2.34	2.94	1.47	79	-0.367	372	–	–
Almeida et al.	2025	2.63	2.98	–	10	–	372	–	–
Hunt & Reffert	2024	–	–	–	–	–	725⁽¹⁾	–	–
Cavallo et al.	2024	1.86	2.99	–	145	-0.540	–	–	–
Hunt & Reffert	2023	2.58	3.39	1.47	21	–	–	–	–
Just et al.	2023	–	–	–	79	–	187	–	–
Dias et al.	2021	2.63	2.98	–	10	-0.194	–	–	–
Cantat-Gaudin et al.	2020	2.61	2.35	–	30	–	–	–	–
Cantat-Gaudin & Anders	2020	2.49	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	2.49	–	–	–	–	–	–	–
Loktin & Popova	2017	1.56	2.50	–	186	–	–	–	–
Kharchenko et al.	2016	2.19	2.90	–	79	–	–	–	–
Kharchenko et al.	2013	2.19	2.90	–	79	–	–	–	–
Kharchenko et al.	2012	2.19	2.90	–	79	–	–	–	–
Dias et al.	2002	1.69	3.35	–	13	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Cmg 672	98.7	10.64	64.05	0.35	-2.74	-0.59	-46.49	0.26
OC 0228	39.7	10.64	64.05	0.36	-2.75	-0.62	-46.49	0.0

💡 Note: The % column shows the percentage of members that Dias 1 shares with each listed object.

Visualization

ℹ️

1 2 3