ESO 389 05

(MWSC 2339)

0.15 UTI

0.0

C_N

0.02

C_dens

0.12

C_C3

0.31

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 14

Radius (P>50% members) 4.7 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.12 Very low quality
C_lit 0.31 Poorly studied
C_dup 1.0 Unique

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

Overview

ℹ️

ESO 389 05 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a large^* distance, well above the mid-plane, affected by low extinction. It is catalogued as a massive, old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~9.17 kpc) differs significantly from the median photometric distance (~4.79 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.

Distant Low extinction Massive Old

Data

🔍 Search references for ESO 389 05 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	239.443	-36.221	0.109	-6.444	-4.905	–
Just et al.	2023	239.443	-36.194	–	–	–	–
Bica et al.	2019	239.463	-36.215	–	–	–	–
Kharchenko et al.	2016	239.443	-36.194	–	–	–	–
Kharchenko et al.	2013	239.452	-36.195	–	-3.85	-5.4	–
Dias et al.	2002	239.458	-36.205	–	-3.85	-5.4	–

💡 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	–	–	–	3548	–	5000	–	–
Kharchenko et al.	2016	4.79	0.97	–	3548	–	–	–	–
Kharchenko et al.	2013	4.79	0.97	–	3548	–	–	–	–
Dias et al.	2002	4.79	0.97	–	3548	–	–	–	–

Visualization

ℹ️