ASCC 57

(MWSC 1776)

0.28 UTI

0.0

C_N

0.01

C_dens

0.38

C_C3

0.52

C_lit

1.0

C_dup

N_m (P>50%) 17

Core radius and density 10 [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 0.52 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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ASCC 57 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 a massive, near-solar metallicity, old cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~5.45 kpc) differs significantly from the median photometric distance (~1.48 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 Massive Near-solar metallicity Old

Data

🔍 Search references for ASCC 57 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	99999–	152.738	-66.683	0.183	-5.094	2.708	40.156
Just et al.	2023	152.725	-66.696	–	–	–	–
Bica et al.	2019	152.698	-66.684	–	–	–	–
Dib et al.	2018	152.73	-66.7	–	–	–	–
Sampedro et al.	2017	152.7	-66.68	–	-7.81	3.72	–
Joshi et al.	2016	152.73	-66.7	–	–	–	–
Kharchenko et al.	2016	152.725	-66.696	–	–	–	–
Dias et al.	2014	152.7	-66.68	–	-7.85	3.71	–
Kharchenko et al.	2013	152.73	-66.7	–	-6.56	3.67	–
Piskunov et al.	2008	152.713	-66.675	–	–	–	–
Kharchenko et al.	2005	152.7	-66.68	–	-4.15	3.04	–
Dias et al.	2002	152.7	-66.68	–	-7.85	3.71	2.46

💡 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–	1.48	0.535	–	1820	-0.322	2424	–	–
Just et al.	2023	–	–	–	1820	–	170	–	–
Dib et al.	2018	1.48	–	–	1820	–	–	–	–
Joshi et al.	2016	1.48	0.66	–	1820	–	4677	–	–
Kharchenko et al.	2016	1.48	0.66	–	1820	–	–	–	–
Kharchenko et al.	2013	1.48	0.66	–	1820	-0.347	–	–	–
Piskunov et al.	2008	1.50	0.41	–	501	–	–	–	–
Kharchenko et al.	2005	1.50	0.41	–	501	–	–	–	–
Dias et al.	2002	1.50	0.41	–	501	-0.296	–	–	–

Visualization

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