OC 0073

0.19 UTI

0.0

C_N

0.07

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.3 [pc], 0.4 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.07 Very loose
C_C3 0.75 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 0073 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, 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.

⚠️ 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.

Distant High extinction Massive Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for OC 0073 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–	288.185	12.008	0.251	-1.463	-4.352	23.532
Hunt & Reffert	2024	288.18	12.002	0.245	-1.425	-4.337	23.48
Cavallo et al.	2024	288.191	12.021	0.245	–	–	–
Hunt & Reffert	2023	288.18	12.002	0.245	-1.425	-4.337	23.48
Hao et al.	2022	288.16	12.05	0.318	-1.608	-4.385	–

💡 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–	3.66	4.405	2.04	39	0.080	1195	–	–
Hunt & Reffert	2024	3.66	4.45	2.04	36	–	1195⁽¹⁾	–	–
Cavallo et al.	2024	4.07	4.25	–	42	0.110	–	–	–
Hunt & Reffert	2023	3.66	4.45	2.04	36	–	–	–	–
Hao et al.	2022	–	4.36	–	501	0.049	–	–	–

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

Visualization

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