OC 0646

0.00 UTI

0.28

C_N

1.0

C_dens

0.62

C_C3

0.0

C_lit

0.0

C_dup

N₅₀ (P>50% members) 28

Stellar density (N₅₀/rad) 44.1 [N/pc²]

C3 classification CA

C_N 0.28 Poorly populated
C_dens 1.0 Very dense
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.0 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0646 is a poorly populated, very dense object of intermediate 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 0646 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–	243.207	-52.393	0.402	-4.364	-4.532	-39.973
Hao et al.	2022	243.203	-52.398	0.423	-4.375	-4.502	–

💡 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–	–	3.86	–	32	0.223	–	–	–
Hao et al.	2022	–	3.86	–	32	0.223	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Ruprecht 115	100.0	243.21	-52.4	0.38	-4.35	-4.56	-41.18	0.9

💡 Note: The % column shows the percentage of members that OC 0646 shares with each listed object.

Visualization

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