ESO 131 09

(MWSC 2041)

0.18 UTI

0.0

C_N

0.01

C_dens

0.12

C_C3

0.38

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 13

Radius (P>50% members) 8.5 [arcmin]

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.12 Very low quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

ℹ️

ESO 131 09 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~5.66 kpc) differs significantly from the median photometric distance (~2.25 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 Intermediate age

Data

🔍 Search references for ESO 131 09 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	187.371	-57.876	0.177	-6.709	-0.416	9.143
Just et al.	2023	187.394	-57.862	–	–	–	–
Bica et al.	2019	187.399	-57.868	–	–	–	–
Kharchenko et al.	2016	187.394	-57.862	–	–	–	–
Dias et al.	2014	187.408	-57.877	–	-2.84	-0.09	–
Kharchenko et al.	2013	187.402	-57.865	–	-4.35	2.67	–
Dias et al.	2002	187.408	-57.877	–	-2.84	-0.09	–

💡 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	–	–	–	794	–	383	–	–
Kharchenko et al.	2016	2.25	2.26	–	794	–	–	–	–
Kharchenko et al.	2013	2.25	2.26	–	794	–	–	–	–
Dias et al.	2002	2.28	2.63	–	22	–	–	–	–

Visualization

ℹ️