ESO 137 23

0.11 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 16

Core radius and density 8.1 [pc], 0.03 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.01 Very loose
C_C3 0.38 Low quality
C_lit 0.1 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

ESO 137 23 is a sparse, very loose object of low C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by low extinction. It is catalogued as an old cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 8 years.

(*): The parallax distance estimate (~6.02 kpc) differs significantly from the median photometric distance (~1.56 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 Low extinction Old

Data

🔍 Search references for ESO 137 23 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	246.091	-61.715	0.166	-4.223	-5.786	-26.915
Dib et al.	2018	246.127	-61.733	–	–	–	–
Sampedro et al.	2017	246.113	-61.742	–	-3.77	-6.0	–
Joshi et al.	2016	246.127	-61.733	–	–	–	–
Dias et al.	2014	246.112	-61.742	–	-4.19	-5.78	–
Bukowiecki et al.	2011	246.196	-61.732	–	–	–	–

💡 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–	1.56	0.33	–	3548	–	–	–	–
Dib et al.	2018	1.56	–	–	3548	–	–	–	–
Joshi et al.	2016	1.56	0.33	–	3548	–	–	–	–

Visualization

ℹ️