Theia 2421

0.08 UTI

0.63

C_N

0.37

C_dens

0.75

C_C3

0.03

C_lit

0.21

C_dup

N_m (P>50%) 76

Core radius and density 1.6 [pc], 1.9 [pc^-2]

C3 classification AB

C_N 0.63 Moderately populated
C_dens 0.37 Loose
C_C3 0.75 High quality
C_lit 0.03 Rarely studied
C_dup 0.21 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 2421 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, 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 Moderate extinction Metal-rich Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for Theia 2421 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–	298.056	24.866	0.642	-0.308	-1.807	-3.944
Hunt & Reffert	2024	298.044	24.844	0.64	-0.332	-1.864	-6.183
Cavallo et al.	2024	298.054	24.912	0.636	–	–	–
Hunt & Reffert	2023	298.044	24.844	0.64	-0.332	-1.864	-6.183

💡 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–	1.48	2.77	1.81	136	0.690	299	–	–
Hunt & Reffert	2024	1.48	2.77	1.81	136	–	299⁽¹⁾	–	–
Cavallo et al.	2024	1.61	2.66	–	200	0.690	–	–	–
Hunt & Reffert	2023	1.48	2.77	1.81	136	–	–	–	–

(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 359	78.9	298.06	24.88	0.64	-0.3	-1.79	-3.94	0.32

💡 Note: The % column shows the percentage of members that Theia 2421 shares with each listed object.

Visualization

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