Theia 322

0.15 UTI

0.0

C_N

0.24

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 1.5 [pc], 1.2 [pc^-2]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.24 Very loose
C_C3 0.38 Low 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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Theia 322 is a sparse, very loose object of low C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a metal-rich, 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.

Very close Low extinction Metal-rich Young

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.55 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.55 (50th percentile).

Data

🔍 Search references for Theia 322 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	12.229	50.809	2.681	4.981	-1.57	-20.211
Cavallo et al.	2024	12.462	50.942	2.783	–	–	–
Hunt & Reffert	2023	12.263	50.773	2.773	4.993	-1.587	-24.905
He et al.	2022	12.435	50.219	2.186	7.351	-3.107	–
Kounkel & Covey	2019	11.601	51.056	1.924	–	–	-6.365

💡 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–	0.39	0.695	0.53	66	0.530	–	–	–
Cavallo et al.	2024	0.39	1.13	–	52	0.530	–	–	–
Hunt & Reffert	2023	0.34	0.99	0.53	5	–	–	–	–
He et al.	2022	–	0.40	–	79	–	–	–	–
Kounkel & Covey	2019	0.52	0.13	–	120	–	–	–	–

Visualization

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