Theia 292

0.17 UTI

0.0

C_N

0.15

C_dens

0.62

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.1 [pc], 0.8 [pc^-2]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.15 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

Theia 292 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a 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 Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as genetic pair P229, along with HSC_2681.

Cavallo et al. (2024)
Gold sample.

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

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

Data

🔍 Search references for Theia 292 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	231.543	-64.593	1.116	-1.044	-4.039	3.257
Cavallo et al.	2024	228.945	-65.215	1.106	–	–	–
Hunt & Reffert	2023	231.676	-64.584	1.103	-1.269	-4.038	1.927
Kounkel & Covey	2019	236.354	-64.034	1.168	–	–	-12.896

💡 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–	0.86	0.51	1.31	166	0.480	–	–	–
Cavallo et al.	2024	0.92	0.51	–	417	0.480	–	–	–
Hunt & Reffert	2023	0.85	0.67	1.31	166	–	–	–	–
Kounkel & Covey	2019	0.86	0.47	–	99	–	–	–	–

Visualization

ℹ️

1 2