Theia 1761

0.05 UTI

0.54

C_N

0.24

C_dens

1.0

C_C3

0.03

C_lit

0.12

C_dup

N_m (P>50%) 57

Core radius and density 2.1 [pc], 1.2 [pc^-2]

C3 classification AA

C_N 0.54 Moderately populated
C_dens 0.24 Very loose
C_C3 1.0 Very high quality
C_lit 0.03 Rarely studied
C_dup 0.12 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 1761 is a moderately populated, very loose object of very 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-poor, young 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-poor Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Data

🔍 Search references for Theia 1761 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–	268.605	-23.086	0.706	0.08	-2.609	-5.403
Hunt & Reffert	2024	268.602	-23.109	0.702	0.089	-2.591	-7.219
Cavallo et al.	2024	268.594	-23.06	0.707	–	–	–
Hunt & Reffert	2023	268.602	-23.109	0.702	0.089	-2.591	-7.219

💡 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–	1.33	2.54	2.24	43	-0.820	976	–	–
Hunt & Reffert	2024	1.33	2.54	2.24	43	–	976⁽¹⁾	–	–
Cavallo et al.	2024	1.08	3.05	–	13	-0.820	–	–	–
Hunt & Reffert	2023	1.33	2.54	2.24	43	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 14199	87.7	268.6	-23.09	0.71	0.08	-2.61	0.14	0.11
UFMG 72	71.9	268.53	-23.13	0.71	0.08	-2.61	-10.55	0.33

💡 Note: The % column shows the percentage of members that Theia 1761 shares with each listed object.

Visualization

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