OC 0645

0.00 UTI

0.57

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

0.0

C_dup

C3 classification AA

Number of members (P>50%) 65

Radius (P>50% members) 2.5 [arcmin]

C_N 0.57 Moderately populated
C_dens 1.0 Very dense
C_C3 1.0 Very 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 0645 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, old 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 Old

Data

🔍 Search references for OC 0645 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	–	244.473	-53.522	0.33	-0.727	-2.181	-27.491
Hao et al.	2022	244.456	-53.529	0.339	-0.729	-2.181	-25.309

💡 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	–	3.60	–	1000	0.457	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 4489	100.0	244.48	-53.52	0.33	-0.72	-2.19	-27.96	0.0
UBC 310	100.0	244.48	-53.53	0.33	-0.72	-2.19	-27.96	0.73

💡 Note: The % column shows the percentage of members that OC 0645 shares with each listed object.

Visualization

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