MWSC 5558

0.18 UTI

0.0

C_N

0.03

C_dens

0.38

C_C3

0.25

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 21

Radius (P>50% members) 8.7 [arcmin]

C_N 0.0 Sparse
C_dens 0.03 Very loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

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

Overview

ℹ️

MWSC 5558 is a sparse, very loose object of 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 old cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~4.42 kpc) differs significantly from the median photometric distance (~2.02 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 MWSC 5558 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	20.742	37.959	0.226	-1.197	-1.961	-124.994
Just et al.	2023	20.669	37.962	–	–	–	–
Bica et al.	2019	20.665	37.962	–	–	–	–
Kharchenko et al.	2016	20.669	37.962	–	–	–	–
Schmeja et al.	2014	20.677	37.965	–	3.1	-3.16	–

💡 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	–	–	–	1334	–	259	–	–
Kharchenko et al.	2016	2.02	0.71	–	1334	–	–	–	–
Schmeja et al.	2014	2.02	0.71	–	1334	–	–	–	–

Visualization

ℹ️