OC 0290

0.12 UTI

0.0

C_N

0.2

C_dens

0.25

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 2.0 [pc], 1.0 [pc^-2]

C3 classification CC

C_N 0.0 Sparse
C_dens 0.2 Very loose
C_C3 0.25 Low 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 0290 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.19 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.19 (50th percentile).

Data

🔍 Search references for OC 0290 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–	75.404	30.741	0.579	0.766	-2.972	30.664
Hunt & Reffert	2024	75.435	30.759	0.574	0.791	-2.995	30.602
Cavallo et al.	2024	75.405	30.743	0.573	–	–	–
Hunt & Reffert	2023	75.435	30.759	0.574	0.791	-2.995	30.602
Hao et al.	2022	75.376	30.739	0.587	0.764	-3.018	–

💡 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–	1.62	1.63	1.36	454	0.281	133	–	–
Hunt & Reffert	2024	1.62	1.63	1.36	511	–	133⁽¹⁾	–	–
Cavallo et al.	2024	2.06	1.95	–	282	0.490	–	–	–
Hunt & Reffert	2023	1.62	1.63	1.36	511	–	–	–	–
Hao et al.	2022	–	1.04	–	398	0.073	–	–	–

(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 344	92.0	75.41	30.75	0.58	0.76	-2.97	24.22	0.02

💡 Note: The % column shows the percentage of members that OC 0290 shares with each listed object.

Visualization

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