Theia 3784

0.19 UTI

0.0

C_N

0.56

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 22

Stellar density (N₅₀/rad) 2.8 [N/pc²]

C3 classification CB

C_N 0.0 Sparse
C_dens 0.56 Moderately dense
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 3784 is a sparse, moderately dense object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It was recently reported 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.

Relatively close Moderate extinction Metal-rich Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 3784 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–	183.134	-61.331	0.394	-4.12	0.048	-13.631
Hunt & Reffert	2024	183.148	-61.33	0.392	-4.101	0.06	-15.294
Cavallo et al.	2024	183.166	-61.316	0.393	–	–	–
Hunt & Reffert	2023	183.148	-61.33	0.392	-4.101	0.06	-15.294

💡 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–	2.255	1.225	0.85	101	0.590	208	–	–
Hunt & Reffert	2024	–	–	–	–	–	208⁽¹⁾	–	–
Cavallo et al.	2024	2.17	0.86	–	178	0.590	–	–	–
Hunt & Reffert	2023	2.34	1.59	0.85	24	–	–	–	–

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

Visualization

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