ESO 456 72

(MWSC 2840)

0.25 UTI

0.0

C_N

0.02

C_dens

0.5

C_C3

0.38

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 17

Radius (P>50% members) 6.5 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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ESO 456 72 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a large^* distance, well below the mid-plane, affected by high extinction. It is catalogued as a low-mass, old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~7.19 kpc) differs significantly from the median photometric distance (~1.21 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 High extinction Low mass Old

Data

🔍 Search references for ESO 456 72 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	–	273.114	-29.601	0.139	-6.796	-4.05	124.988
Just et al.	2023	273.112	-29.568	–	–	–	–
Bica et al.	2019	273.119	-29.575	–	–	–	–
Kharchenko et al.	2016	273.112	-29.568	–	–	–	–
Dias et al.	2014	273.121	-29.577	–	-2.03	-4.7	–
Kharchenko et al.	2013	273.121	-29.567	–	-0.28	-1.36	–
Dias et al.	2002	273.121	-29.577	–	-1.63	-4.16	–

💡 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	–	–	–	3090	–	17	–	–
Kharchenko et al.	2016	1.21	3.23	–	3090	–	–	–	–
Kharchenko et al.	2013	1.21	3.23	–	3090	–	–	–	–
Dias et al.	2002	1.21	3.23	–	3090	–	–	–	–

Visualization

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