Theia 7580

0.08 UTI

0.52

C_N

0.35

C_dens

0.75

C_C3

0.06

C_lit

0.22

C_dup

N_m (P>50%) 54

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

C3 classification AB

C_N 0.52 Moderately populated
C_dens 0.35 Loose
C_C3 0.75 High quality
C_lit 0.06 Rarely studied
C_dup 0.22 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 7580 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by high 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 High extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P588, along with UBC_161.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.22 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.22 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for Theia 7580 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–	319.804	56.988	0.707	3.532	0.2	-27.083
Hu & Soubiran	2025	319.828	56.951	–	–	–	–
Hunt & Reffert	2024	319.81	56.963	0.704	3.549	0.183	-23.043
Cavallo et al.	2024	319.828	56.951	0.703	–	–	–
Hunt & Reffert	2023	319.81	56.963	0.704	3.549	0.183	-23.043

💡 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–	1.38	3.33	2.2	334	0.130	167	–	–
Hu & Soubiran	2025	–	–	–	–	0.240⁽⁵⁾	–	–	–
Hunt & Reffert	2024	1.38	3.33	2.20	334	–	167⁽¹⁾	–	–
Cavallo et al.	2024	1.31	2.97	–	933	0.020	–	–	–
Hunt & Reffert	2023	1.38	3.33	2.20	334	–	–	–	–

(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 213	77.8	319.8	56.98	0.71	3.54	0.19	-27.08	0.3
CWWDL 14235	64.8	319.81	56.98	0.71	3.55	0.19	-27.08	0.0

💡 Note: The % column shows the percentage of members that Theia 7580 shares with each listed object.

Visualization

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