Theia 5677

0.04 UTI

0.0

C_N

0.13

C_dens

0.75

C_C3

0.25

C_lit

0.16

C_dup

C3 classification AB

Number of members (P>50%) 23

Radius (P>50% members) 7.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.13 Very loose
C_C3 0.75 High quality
C_lit 0.25 Poorly studied
C_dup 0.16 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Theia 5677 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, below 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 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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 5677 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	–	134.665	-54.885	0.36	-3.759	3.843	16.807
Hu & Soubiran	2025	134.75	-54.927	–	–	–	–
Hunt & Reffert	2024	134.687	-54.874	0.356	-3.747	3.826	16.951
Cavallo et al.	2024	134.75	-54.927	0.356	–	–	–
Hunt & Reffert	2023	134.687	-54.874	0.356	-3.747	3.826	16.951

💡 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]	Bfr	BSS
Hu & Soubiran	2025	–	–	–	–	-0.210*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	107*	–	–
Cavallo et al.	2024	2.58	1.03	–	708	0.030	–	–	–
Hunt & Reffert	2023	2.64	0.39	0.67	942	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 2216	84.0	134.71	-54.89	0.36	-3.77	3.84	16.81	0.18

💡 Note: The % column shows the percentage of members that Theia 5677 shares with each listed object.

Visualization

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