Theia 2443

0.52 UTI

0.34

C_N

1.0

C_dens

0.75

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 34

Stellar density (N₅₀/rad) 5.5 [N/pc²]

C3 classification AB

C_N 0.34 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 2443 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near 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 absorption and age parameters (see Parameters). It was recently reported in the literature.

Close Low extinction Near-solar metallicity Intermediate age

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 290 along with NGC_6087.

Palma et al. (2025)
Part of multiple system G211, along with NGC_6087 and Lynga_7.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 2443 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–	242.209	-56.046	0.985	-0.397	-4.061	-30.492
Hunt & Reffert	2024	242.231	-56.063	0.995	-0.449	-4.092	-12.173
Cavallo et al.	2024	242.052	-56.063	0.998	–	–	–
Hunt & Reffert	2023	242.231	-56.063	0.995	-0.449	-4.092	-12.173

💡 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–	0.94	0.83	1.08	214	-0.490	217	–	–
Liu et al.	2025	0.94	0.16	–	214	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	217⁽¹⁾	–	–
Cavallo et al.	2024	0.86	1.23	–	324	-0.490	–	–	–
Hunt & Reffert	2023	0.95	0.83	1.08	71	–	–	–	–

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

Visualization

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