Dias 2

(MWSC 756)

0.87 UTI

0.71

C_N

1.0

C_dens

0.62

C_C3

1.0

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 92

Radius (P>50% members) 3.0 [arcmin]

C_N 0.71 Moderately populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 1.0 Very well-studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

Dias 2 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, well below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, old cluster, but with a large variance across recent sources for the absorption, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

Distant Moderate extinction Near-solar metallicity Old

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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Dias 2 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	92.282	4.571	0.212	-0.799	1.267	46.085
Li et al.	2025	92.291	4.573	0.21	-0.772	1.24	–
Hu & Soubiran	2025	92.284	4.573	–	–	–	–
Almeida et al.	2025	92.294	4.585	–	–	–	–
Hunt & Reffert	2024	92.289	4.571	0.224	-0.804	1.284	46.064
Cavallo et al.	2024	92.284	4.573	0.224	–	–	–
Hunt & Reffert	2023	92.289	4.571	0.224	-0.804	1.284	46.064
Just et al.	2023	92.273	4.586	–	–	–	–
Dias et al.	2021	92.294	4.585	0.226	-0.75	1.223	–
Cantat-Gaudin et al.	2020	92.291	4.573	0.21	-0.772	1.24	–
Sánchez et al.	2020	92.296	4.593	–	-0.793	1.184	–
Cantat-Gaudin & Anders	2020	92.291	4.573	0.21	-0.772	1.24	–
Bica et al.	2019	92.294	4.588	–	–	–	–
Cantat-Gaudin et al.	2018	92.291	4.573	0.21	-0.772	1.24	–
Loktin & Popova	2017	92.295	4.594	–	-0.411	-0.263	–
Kharchenko et al.	2016	92.273	4.586	–	–	–	–
Dias et al.	2014	92.296	4.593	–	-0.68	-4.25	–
Kharchenko et al.	2013	92.28	4.585	–	-0.87	0.7	–
Dias et al.	2002	92.296	4.593	–	-0.68	-4.25	–

💡 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]	Bfr	BSS
Li et al.	2025	5.23	1.04	–	942	0.052	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.310*	–	–	–
Almeida et al.	2025	4.03	1.03	–	1279	–	391	–	–
Hunt & Reffert	2024	–	–	–	–	–	333*	–	–
Cavallo et al.	2024	3.63	1.72	–	575	-0.990	–	–	–
Hunt & Reffert	2023	4.35	0.34	0.90	1633	–	–	–	–
Just et al.	2023	–	–	–	1862	–	1119	–	–
Dias et al.	2021	4.03	1.03	–	1279	-0.242	–	–	–
Cantat-Gaudin et al.	2020	4.02	0.47	–	1738	–	–	–	–
Cantat-Gaudin & Anders	2020	4.19	–	–	–	–	–	–	–
Cantat-Gaudin et al.	2018	4.19	–	–	–	–	–	–	–
Loktin & Popova	2017	3.66	0.70	–	251	–	–	–	–
Kharchenko et al.	2016	2.97	1.29	–	1862	–	–	–	–
Kharchenko et al.	2013	2.97	1.29	–	1862	–	–	–	–
Dias et al.	2002	2.83	1.89	–	794	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

ℹ️

1 2 3