Theia 3779

0.04 UTI

0.28

C_N

0.47

C_dens

0.5

C_C3

0.3

C_lit

0.11

C_dup

N₅₀ (P>50% members) 28

Stellar density (N₅₀/rad) 2.3 [N/pc²]

C3 classification BB

C_N 0.28 Poorly populated
C_dens 0.47 Loose
C_C3 0.5 Intermediate quality
C_lit 0.3 Poorly studied
C_dup 0.11 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 3779 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It was recently reported in the literature.

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

Relatively close Low extinction Near-solar metallicity Intermediate age

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 94 along with CWNU_1107, and of multiple system 33 along with CWNU_1107, UBC_396 and UPK_189.

Palma et al. (2025)
Part of multiple system G29, along with CWNU_1107, UBC_396 and UPK_189.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 3779 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–	331.527	63.001	0.969	-2.959	-3.218	-21.256
Liu et al.	2025	331.6	63.0	0.96	-2.93	-3.21	-18.2
Hu & Soubiran	2025	331.395	62.955	–	–	–	–
Hunt & Reffert	2024	331.596	63.003	0.965	-2.935	-3.211	-18.197
Cavallo et al.	2024	331.395	62.955	0.965	–	–	–
Hunt & Reffert	2023	331.596	63.003	0.965	-2.935	-3.211	-18.197

💡 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–	1.03	0.81	0.6	275	0.085	87	–	–
Liu et al.	2025	1.62	0.40	–	120	–	–	–	–
Hu & Soubiran	2025	–	–	–	–	-0.170⁽⁵⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	87⁽¹⁾	–	–
Cavallo et al.	2024	1.03	0.81	–	501	0.340	–	–	–
Hunt & Reffert	2023	0.99	0.86	0.60	275	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 1156	89.3	331.56	63.0	0.97	-2.96	-3.22	-21.26	0.22

💡 Note: The % column shows the percentage of members that Theia 3779 shares with each listed object.

Visualization

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