Theia 4725

0.04 UTI

0.3

C_N

0.23

C_dens

0.62

C_C3

0.03

C_lit

0.17

C_dup

N_m (P>50%) 30

Core radius and density 1.8 [pc], 1.1 [pc^-2]

C3 classification CA

C_N 0.3 Poorly populated
C_dens 0.23 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 0.17 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 4725 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young 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 Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Classified as optical pair P510, along with HSC_584.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.54 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.54 (50th percentile).

Data

🔍 Search references for Theia 4725 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–	301.609	36.418	0.339	-2.542	-5.103	–
Hunt & Reffert	2024	301.612	36.431	0.313	-2.547	-5.089	–
Cavallo et al.	2024	301.532	36.281	0.319	–	–	–
Hunt & Reffert	2023	301.612	36.431	0.313	-2.547	-5.089	–

💡 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–	2.81	2.17	2.345	45	0.090	234	–	–
Hunt & Reffert	2024	2.81	2.17	2.34	45	–	234⁽¹⁾	–	–
Cavallo et al.	2024	2.98	2.43	–	60	0.090	–	–	–
Hunt & Reffert	2023	2.81	2.17	2.35	45	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0103	83.3	301.61	36.42	0.35	-2.54	-5.11	–	0.13
UBC 1091	56.7	301.61	36.37	0.34	-2.53	-5.11	–	0.21

💡 Note: The % column shows the percentage of members that Theia 4725 shares with each listed object.

Visualization

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