OC 0266

0.29 UTI

0.49

C_N

0.32

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 49

Core radius and density 2.0 [pc], 1.6 [pc^-2]

C3 classification BB

C_N 0.49 Poorly populated
C_dens 0.32 Loose
C_C3 0.5 Intermediate quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0266 is a poorly populated, loose 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 massive, near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Relatively close High extinction Massive Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.22 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.22 (50th percentile).

Data

🔍 Search references for OC 0266 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–	51.168	54.9	0.43	0.287	-1.02	19.573
Hunt & Reffert	2024	51.207	54.942	0.424	0.299	-0.99	17.312
Cavallo et al.	2024	51.092	54.909	0.426	–	–	–
Hunt & Reffert	2023	51.207	54.942	0.424	0.299	-0.99	17.312
Hao et al.	2022	51.117	54.893	0.443	0.331	-1.035	-26.659

💡 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–	2.16	3.62	2.47	68	0.319	1013	–	–
Hunt & Reffert	2024	2.16	3.60	2.47	68	–	1013⁽¹⁾	–	–
Cavallo et al.	2024	2.40	3.64	–	49	0.440	–	–	–
Hunt & Reffert	2023	2.16	3.60	2.47	68	–	–	–	–
Hao et al.	2022	–	4.36	–	126	0.198	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 483	77.6	51.13	54.87	0.43	0.36	-1.08	-26.59	0.05

💡 Note: The % column shows the percentage of members that OC 0266 shares with each listed object.

Visualization

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