OC 0043

0.35 UTI

0.25

C_N

0.36

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 0.9 [pc], 1.8 [pc^-2]

C3 classification AA

C_N 0.25 Poorly populated
C_dens 0.36 Loose
C_C3 1.0 Very high 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 0043 is a poorly populated, loose object of very high 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, very young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.

Relatively close High extinction Near-solar metallicity Very young

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P228, along with HSC_243.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.64 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.64 (50th percentile).

Data

🔍 Search references for OC 0043 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–	279.337	-7.561	0.366	-0.139	-2.123	64.641
Hunt & Reffert	2024	279.348	-7.57	0.36	-0.157	-2.129	50.242
Cavallo et al.	2024	279.338	-7.562	0.359	–	–	–
Hunt & Reffert	2023	279.348	-7.57	0.36	-0.157	-2.129	50.242
Hao et al.	2022	279.334	-7.558	0.364	-0.155	-2.128	–

💡 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–	2.61	4.78	2.78	18	0.398	899	–	–
Hunt & Reffert	2024	2.61	4.78	2.78	22	–	899⁽¹⁾	–	–
Cavallo et al.	2024	2.34	4.47	–	14	0.530	–	–	–
Hunt & Reffert	2023	2.61	4.78	2.78	22	–	–	–	–
Hao et al.	2022	–	5.12	–	3	0.265	–	–	–

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

Visualization

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