Dutra-Bica 30

(MWSC 2756)

0.18 UTI

0.0

C_N

0.0

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

C3 classification CB

Number of members (P>50%) 15

Radius (P>50% members) 7.0 [arcmin]

C_N 0.0 Sparse
C_dens 0.0 Very loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

ℹ️

Dutra-Bica 30 is a sparse, very loose object of low C3 quality. Its parallax locates it at a very large^* distance, well below the mid-plane, affected by high extinction. It is catalogued as an extremely massive, intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~172.41 kpc) differs significantly from the median photometric distance (~7.06 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.

Very distant High extinction Extremely massive Intermediate age

Dias et al. (2002)
Asterism (Dutra et al. 2003, A&A 408, 127)

Data

🔍 Search references for Dutra-Bica 30 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	269.213	-28.632	0.006	-4.144	-6.348	–
Just et al.	2023	269.226	-28.626	–	–	–	–
Bica et al.	2019	269.229	-28.628	–	–	–	–
Kharchenko et al.	2016	269.226	-28.626	–	–	–	–
Kharchenko et al.	2013	269.235	-28.625	–	-1.73	-6.41	–

💡 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
Just et al.	2023	–	–	–	309	–	109901	–	–
Kharchenko et al.	2016	7.06	4.39	–	309	–	–	–	–
Kharchenko et al.	2013	7.06	4.39	–	309	–	–	–	–

Visualization

ℹ️