OC 0331

0.00 UTI

0.26

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%) 26

Radius (P>50% members) 14.8 [arcmin]

C_N 0.26 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 0331 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, below 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.

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

Moderate extinction Near-solar metallicity Very young

Data

🔍 Search references for OC 0331 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	–	82.427	3.564	2.915	1.515	-0.625	13.917
Hao et al.	2022	82.459	3.52	2.919	1.592	-0.56	12.973

💡 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	–	2.66	–	10	0.051	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
ASCC 21	100.0	82.23	3.55	2.89	1.46	-0.61	15.49	0.95
OC 0329	26.9	81.92	3.65	2.91	1.45	-0.6	15.19	0.01
OC 0327	15.4	82.03	3.76	2.91	1.33	-0.6	15.19	0.03

💡 Note: The % column shows the percentage of members that OC 0331 shares with each listed object.

Visualization

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