Theia 2122

0.05 UTI

0.32

C_N

0.32

C_dens

1.0

C_C3

0.03

C_lit

0.16

C_dup

N_m (P>50%) 32

Core radius and density 1.3 [pc], 1.6 [pc^-2]

C3 classification AA

C_N 0.32 Poorly populated
C_dens 0.32 Loose
C_C3 1.0 Very high quality
C_lit 0.03 Rarely studied
C_dup 0.16 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 2122 is a poorly populated, loose object of very high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a very metal-poor, 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 Very metal-poor Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for Theia 2122 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–	262.266	-30.896	0.949	3.797	-0.287	-16.653
Hunt & Reffert	2024	262.27	-30.933	0.941	3.764	-0.298	-17.8
Cavallo et al.	2024	262.305	-30.927	0.944	–	–	–
Hunt & Reffert	2023	262.27	-30.933	0.941	3.764	-0.298	-17.8

💡 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–	1.0	0.53	0.44	444	-1.120	144	–	–
Hunt & Reffert	2024	1.00	0.53	0.44	444	–	144⁽¹⁾	–	–
Cavallo et al.	2024	0.83	1.50	–	417	-1.120	–	–	–
Hunt & Reffert	2023	1.00	0.53	0.44	444	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UFMG 67	84.4	262.26	-30.89	0.95	3.8	-0.29	-16.65	0.3

💡 Note: The % column shows the percentage of members that Theia 2122 shares with each listed object.

Visualization

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