OC 0542

0.10 UTI

0.0

C_N

0.24

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

C3 classification DB

Number of members (P>50%) 22

Radius (P>50% members) 3.9 [arcmin]

C_N 0.0 Sparse
C_dens 0.24 Very loose
C_C3 0.25 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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OC 0542 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

⚠️ 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.

Moderate extinction Near-solar metallicity Very young

Data

🔍 Search references for OC 0542 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	–	156.6	-58.547	0.265	-5.391	3.042	–
Hao et al.	2022	156.651	-58.541	0.264	-5.375	3.035	–

💡 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
Hao et al.	2022	–	1.08	–	1	0.414	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 2339	52.0	156.47	-58.58	0.27	-5.38	2.99	–	0.14

💡 Note: The % column shows the percentage of members that OC 0542 shares with each listed object.

Visualization

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