Theia 332

0.18 UTI

0.3

C_N

0.1

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 30

Core radius and density 2.3 [pc], 0.5 [pc^-2]

C3 classification BC

C_N 0.3 Poorly populated
C_dens 0.1 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 332 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, intermediate-age cluster (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.

Close Low extinction Low mass Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G245, along with Theia_470 and Theia_73.

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 Theia 332 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–	299.174	32.884	1.494	3.746	1.381	-11.185
Hunt & Reffert	2024	299.032	32.903	1.473	3.781	1.395	-10.296
Cavallo et al.	2024	299.217	32.901	1.48	–	–	–
Hunt & Reffert	2023	299.032	32.903	1.473	3.781	1.395	-10.296
Kounkel & Covey	2019	298.979	32.9	1.529	–	–	1.197

💡 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–	0.645	0.285	0.7	102	0.040	45	–	–
Hunt & Reffert	2024	0.64	0.20	0.70	102	–	45⁽¹⁾	–	–
Cavallo et al.	2024	0.70	0.52	–	54	0.040	–	–	–
Hunt & Reffert	2023	0.64	0.20	0.70	102	–	–	–	–
Kounkel & Covey	2019	0.65	0.37	–	111	–	–	–	–

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

Visualization

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