OC 0473

0.13 UTI

0.0

C_N

0.0

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 18

Core radius and density 6.2 [pc], 0.01 [pc^-2]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.0 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.0 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 0473 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a very large^* distance, well below the mid-plane, affected by moderate 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.

(*): The parallax distance estimate (~18.98 kpc) differs significantly from the median photometric distance (~11.04 kpc).

⚠️ 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.

Extremely distant Moderate extinction Near-solar metallicity Very young

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.50 (50th percentile).

Hunt & Reffert (2023)
Classified as moving group. CMD class: 0.50 (50th percentile).

Data

🔍 Search references for OC 0473 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–	123.856	-44.819	0.053	-1.356	2.23	140.641
Hunt & Reffert	2024	124.065	-44.862	0.061	-1.354	2.242	129.626
Hao et al.	2022	123.887	-44.839	0.063	-1.378	2.228	138.401

💡 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–	11.04	2.475	1.77	16	0.022	919	–	–
Hunt & Reffert	2024	11.04	1.93	1.77	28	–	919⁽¹⁾	–	–
Hao et al.	2022	–	3.02	–	3	0.022	–	–	–

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

Visualization

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