Theia 5422

0.04 UTI

0.77

C_N

0.84

C_dens

1.0

C_C3

0.25

C_lit

0.06

C_dup

N₅₀ (P>50% members) 153

Stellar density (N₅₀/rad) 4.2 [N/pc²]

C3 classification AA

C_N 0.77 Rich
C_dens 0.84 Dense
C_C3 1.0 Very high quality
C_lit 0.25 Poorly studied
C_dup 0.06 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Theia 5422 is a rich, dense object of very high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Distant High extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 5422 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	314.313	46.451	0.184	-2.942	-3.592	-35.479
Hu & Soubiran	2025	314.289	46.439	–	–	–	–
Hunt & Reffert	2024	314.336	46.48	0.174	-2.941	-3.601	-45.883
Cavallo et al.	2024	314.289	46.439	0.175	–	–	–
Hunt & Reffert	2023	314.336	46.48	0.174	-2.941	-3.601	-45.883

💡 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–	4.68	3.565	2.59	465	-0.210	3336	–	–
Hu & Soubiran	2025	–	–	–	–	-0.380⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	3336⁽¹⁾	–	–
Cavallo et al.	2024	4.53	3.40	–	631	-0.040	–	–	–
Hunt & Reffert	2023	4.83	3.73	2.59	299	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 1571	93.5	314.29	46.44	0.19	-2.94	-3.59	-36.27	0.55

💡 Note: The % column shows the percentage of members that Theia 5422 shares with each listed object.

Visualization

ℹ️

1 2