Dias 7

(MWSC 3188)

0.14 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.29

C_lit

1.0

C_dup

N_m (P>50%) 15

Core radius and density 6.6 [pc], 0.07 [pc^-2]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.29 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Dias 7 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by moderate extinction. It is catalogued as an old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~5.25 kpc) differs significantly from the median photometric distance (~2.65 kpc).

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Old

Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010).

Data

🔍 Search references for Dias 7 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	297.358	21.177	0.191	-3.527	-5.038	-48.721
Just et al.	2023	297.361	21.165	–	–	–	–
Bica et al.	2019	297.327	21.142	–	–	–	–
Dias et al.	2018	–	–	–	-4.48	-5.72	–
Loktin & Popova	2017	297.345	21.17	–	-4.968	-14.711	–
Sampedro et al.	2017	297.337	21.17	–	0.57	-6.19	–
Kharchenko et al.	2016	297.361	21.165	–	–	–	–
Tadross	2014	297.342	21.163	–	–	–	–
Dias et al.	2014	297.337	21.17	–	0.48	-6.19	–
Kharchenko et al.	2013	297.367	21.167	–	-1.17	-14.18	–
Bukowiecki et al.	2011	297.346	21.172	–	–	–	–
Dias et al.	2002	297.337	21.17	–	0.48	-6.19	–

💡 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–	2.65	1.435	–	2089	–	275	–	–
Just et al.	2023	–	–	–	2089	–	275	–	–
Loktin & Popova	2017	2.30	0.84	–	2630	–	–	–	–
Kharchenko et al.	2016	2.80	1.64	–	2089	–	–	–	–
Tadross	2014	2.54	1.32	–	2000	–	–	–	–
Kharchenko et al.	2013	2.80	1.64	–	2089	–	–	–	–
Bukowiecki et al.	2011	2.76⁽¹⁾	1.55	–	2818	–	–	–	–
Dias et al.	2002	2.54	1.32	–	1995	–	–	–	–

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

Visualization

ℹ️