OC 0038

0.33 UTI

0.3

C_N

0.24

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 30

Core radius and density 1.9 [pc], 1.2 [pc^-2]

C3 classification AA

C_N 0.3 Poorly populated
C_dens 0.24 Very 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 0038 is a poorly populated, very loose object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, 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 Young

Palma et al. (2025)
Part of multiple system G56, along with CWNU_2666 and HSC_224.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for OC 0038 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–	279.203	-10.898	0.545	-1.004	-2.706	-76.398
Hunt & Reffert	2024	279.197	-10.882	0.547	-0.989	-2.715	-76.364
Cavallo et al.	2024	279.201	-10.898	0.549	–	–	–
Hunt & Reffert	2023	279.197	-10.882	0.547	-0.989	-2.715	-76.364
Hao et al.	2022	279.216	-10.908	0.529	-0.954	-2.718	–

💡 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–	1.71	4.21	0.78	22	0.217	402	–	–
Hunt & Reffert	2024	1.71	4.21	0.78	22	–	402⁽¹⁾	–	–
Cavallo et al.	2024	2.17	4.02	–	65	0.170	–	–	–
Hunt & Reffert	2023	1.71	4.21	0.78	22	–	–	–	–
Hao et al.	2022	–	5.12	–	8	0.265	–	–	–

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

Visualization

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