Platais 5

(HIP 28944 Group; MWSC 763)

0.20 UTI

0.3

C_N

0.02

C_dens

0.38

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 30

Core radius and density 3.4 [pc], 0.08 [pc^-2]

C3 classification BC

C_N 0.3 Poorly populated
C_dens 0.02 Very loose
C_C3 0.38 Low quality
C_lit 0.16 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Platais 5 is a poorly populated, 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 young cluster (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~5.69 kpc) differs significantly from the median photometric distance (~0.27 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.

Very close Low extinction Young

Data

🔍 Search references for Platais 5 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–	92.413	-22.178	0.176	-0.207	1.359	–
Bica et al.	2019	92.408	-22.148	–	–	–	–
Dib et al.	2018	93.675	-22.5	–	–	–	–
Joshi et al.	2016	93.675	-22.5	–	–	–	–
Dias et al.	2014	92.4	-22.152	–	0.65	1.05	13.29
van den Bergh	2006	92.4	-22.152	–	–	–	–
Dias et al.	2002	92.4	-22.152	–	-6.32	7.27	13.29

💡 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–	0.27	0.0	–	60	–	–	–	–
Dib et al.	2018	0.27	–	–	60	–	–	–	–
Joshi et al.	2016	0.27	0.00	–	60	–	–	–	–
van den Bergh	2006	0.27	–	–	60	–	–	–	–
Dias et al.	2002	0.27	–	–	60	–	–	–	–

Visualization

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