OC 0643

0.00 UTI

0.27

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.0

C_dup

C3 classification BA

Number of members (P>50%) 27

Radius (P>50% members) 1.9 [arcmin]

C_N 0.27 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.0 Very likely duplicate

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

Overview

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OC 0643 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

High extinction Near-solar metallicity Young

Data

🔍 Search references for OC 0643 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	–	242.894	-53.04	0.305	-2.502	-2.032	-64.747
Hao et al.	2022	242.903	-53.038	0.317	-2.492	-2.04	–

💡 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	–	4.34	–	50	0.051	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
LISC 1753	100.0	242.89	-53.04	0.31	-2.49	-2.03	-64.68	0.01
UBC 537	100.0	242.89	-53.04	0.3	-2.49	-2.02	-64.75	0.7

💡 Note: The % column shows the percentage of members that OC 0643 shares with each listed object.

Visualization

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