Theia 754

0.02 UTI

1.0

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

0.02

C_dup

N₅₀ (P>50% members) 569

Stellar density (N₅₀/rad) 28.5 [N/pc²]

C3 classification AA

C_N 1.0 Very rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.3 Poorly studied
C_dup 0.02 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Theia 754 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate 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.

Close Moderate extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 754 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	75.942	23.674	1.387	-0.998	-2.405	-10.313
Wei et al.	2025	75.957	23.676	1.387	-1.003	-2.405	–
Zhang et al.	2024	75.967	23.674	–	–	–	–
Hunt & Reffert	2024	75.967	23.674	1.387	-0.995	-2.411	-12.93
Cavallo et al.	2024	75.96	23.664	1.383	–	–	–
Hunt & Reffert	2023	75.967	23.674	1.387	-0.995	-2.411	-12.93

💡 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–	0.73	1.11	0.68	149	0.250	1115	0.33	–
Wei et al.	2025	1.32	1.44	–	66	0.250	840	0.33	–
Zhang et al.	2024	–	–	–	–	-0.100⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	1390⁽¹⁾	–	–
Cavallo et al.	2024	0.73	1.11	–	209	0.370	–	–	–
Hunt & Reffert	2023	0.68	1.05	0.68	149	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
NGC 1750	97.7	75.94	23.68	1.38	-1.0	-2.4	-10.34	1.0

💡 Note: The % column shows the percentage of members that Theia 754 shares with each listed object.

Visualization

ℹ️

1 2