Theia 2231

0.05 UTI

0.0

C_N

0.26

C_dens

0.38

C_C3

0.25

C_lit

0.24

C_dup

N₅₀ (P>50% members) 18

Stellar density (N₅₀/rad) 1.3 [N/pc²]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.26 Loose
C_C3 0.38 Low quality
C_lit 0.25 Poorly studied
C_dup 0.24 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 2231 is a sparse, loose object of low C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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 2231 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–	90.119	27.673	0.589	0.146	-2.113	–
Zhang et al.	2024	90.135	27.686	–	–	–	–
Hunt & Reffert	2024	90.135	27.686	0.586	0.177	-2.097	–
Cavallo et al.	2024	90.124	27.694	0.587	–	–	–
Hunt & Reffert	2023	90.135	27.686	0.586	0.177	-2.097	–

💡 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–	1.65	0.845	0.52	104	-0.025	117	–	–
Zhang et al.	2024	–	–	–	–	-0.239⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	117⁽¹⁾	–	–
Cavallo et al.	2024	1.68	0.88	–	74	0.190	–	–	–
Hunt & Reffert	2023	1.62	0.81	0.52	133	–	–	–	–

(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 516	76.0	90.11	27.68	0.59	0.15	-2.1	–	0.14

💡 Note: The % column shows the percentage of members that Theia 2231 shares with each listed object.

Visualization

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