OC 0143

0.21 UTI

0.25

C_N

0.18

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 2.3 [pc], 0.9 [pc^-2]

C3 classification DA

C_N 0.25 Poorly populated
C_dens 0.18 Very 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

ℹ️

OC 0143 is a poorly populated, very 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 near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.

⚠️ 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 High extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.61 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.61 (50th percentile).

Data

🔍 Search references for OC 0143 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–	319.677	49.075	0.389	-3.619	-4.181	-52.416
Hunt & Reffert	2024	319.712	49.067	0.377	-3.602	-4.177	-40.679
Cavallo et al.	2024	319.672	49.073	0.384	–	–	–
Hunt & Reffert	2023	319.712	49.067	0.377	-3.602	-4.177	-40.679
Hao et al.	2022	319.655	49.082	0.409	-3.672	-4.161	-51.935

💡 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–	2.43	3.33	2.18	212	0.198	538	–	–
Hunt & Reffert	2024	2.43	3.33	2.18	185	–	538⁽¹⁾	–	–
Cavallo et al.	2024	2.91	3.42	–	240	0.180	–	–	–
Hunt & Reffert	2023	2.43	3.33	2.18	185	–	–	–	–
Hao et al.	2022	–	1.55	–	251	0.216	–	–	–

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

Visualization

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