Theia 780

0.00 UTI

0.28

C_N

0.61

C_dens

0.38

C_C3

0.25

C_lit

0.0

C_dup

N₅₀ (P>50% members) 28

Stellar density (N₅₀/rad) 3.0 [N/pc²]

C3 classification BC

C_N 0.28 Poorly populated
C_dens 0.61 Moderately dense
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 0.0 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 780 is a poorly populated, moderately dense 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 near-solar metallicity, intermediate-age cluster (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.

Close Low extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Part of multiple system G116, along with HSC_1404 and HSC_1402.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 780 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–	81.669	30.344	1.052	-0.687	-4.481	3.743
Zhang et al.	2024	81.659	30.32	–	–	–	–
Hunt & Reffert	2024	81.659	30.32	1.034	-0.618	-4.341	7.345
Cavallo et al.	2024	81.47	30.156	1.034	–	–	–
Hunt & Reffert	2023	81.659	30.32	1.034	-0.618	-4.341	7.345

💡 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–	0.92	0.72	0.97	160	-0.142	89	–	–
Zhang et al.	2024	–	–	–	–	-0.165⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	89⁽¹⁾	–	–
Cavallo et al.	2024	0.93	0.85	–	89	-0.120	–	–	–
Hunt & Reffert	2023	0.91	0.59	0.97	232	–	–	–	–

(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 1104	100.0	81.65	30.35	1.05	-0.67	-4.48	3.74	0.34

💡 Note: The % column shows the percentage of members that Theia 780 shares with each listed object.

Visualization

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