OC 0661

0.06 UTI

0.0

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.16

C_dup

C3 classification AB

Number of members (P>50%) 19

Radius (P>50% members) 3.8 [arcmin]

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.16 Likely duplicate

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

Overview

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OC 0661 is a sparse, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.

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

Moderate extinction Near-solar metallicity Intermediate age

Data

🔍 Search references for OC 0661 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	–	248.689	-49.781	0.724	-0.913	-2.741	-24.318
Hao et al.	2022	248.667	-49.807	0.765	-0.901	-2.77	–

💡 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	–	1.58	–	251	0.112	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Collinder 305	84.0	248.67	-49.76	0.68	-0.68	-2.83	-19.48	1.0
CWNU 1219	12.0	248.62	-49.81	0.75	-0.77	-2.82	-19.72	0.12

💡 Note: The % column shows the percentage of members that OC 0661 shares with each listed object.

Visualization

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