ESO 258 01

0.03 UTI

0.0

C_N

0.03

C_dens

0.12

C_C3

0.0

C_lit

1.0

C_dup

C3 classification DC

Number of members (P>50%) 15

Radius (P>50% members) 10.7 [arcmin]

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.12 Very low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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ESO 258 01 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate distance, well below the mid-plane, affected by low extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 9 years.

⚠️ 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 Intermediate age

Data

🔍 Search references for ESO 258 01 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	116.444	-46.719	0.293	-2.118	5.359	–
Loktin & Popova	2017	116.4	-46.71	–	-0.026	4.415	–
Dias et al.	2014	116.446	-46.713	–	3.04	7.41	–

💡 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
Loktin & Popova	2017	3.40	0.72	–	891	–	–	–	–

Visualization

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