Theia 792

0.44 UTI

0.62

C_N

0.24

C_dens

1.0

C_C3

0.16

C_lit

1.0

C_dup

N_m (P>50%) 75

Core radius and density 2.5 [pc], 1.2 [pc^-2]

C3 classification AA

C_N 0.62 Moderately populated
C_dens 0.24 Very loose
C_C3 1.0 Very high quality
C_lit 0.16 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 792 is a moderately populated, very loose object of very high C3 quality. Its parallax locates it at a very 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 parameter (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Very close Low extinction Near-solar metallicity Intermediate age

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 198 along with HSC_1553, and of multiple system 55 along with HSC_1553 and Platais_6.

Palma et al. (2025)
Part of multiple system G121, along with Platais_6 and HSC_1553.

Cavallo et al. (2024)
Gold sample.

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

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

Data

🔍 Search references for Theia 792 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–	98.93	19.625	4.706	2.906	-10.782	38.732
Liu et al.	2025	99.02	19.61	4.74	3.05	-11.17	38.21
Yang et al.	2025	99.018	19.614	–	–	–	–
Zhang et al.	2024	99.018	19.613	–	–	–	–
Cavallo et al.	2024	98.625	20.494	4.752	–	–	–
Hunt & Reffert	2023	99.018	19.613	4.737	3.053	-11.174	38.208
He et al.	2022	99.069	19.941	4.732	2.966	-10.867	–
Kounkel & Covey	2019	97.912	21.115	4.733	–	–	15.949

💡 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–	0.21	0.15	0.41	148	0.077	–	–	–
Liu et al.	2025	0.24	0.10	–	93	–	–	–	–
Yang et al.	2025	–	–	–	195	0.070⁽³⁾	–	–	–
Zhang et al.	2024	–	–	–	–	0.077⁽¹⁾	–	–	–
Cavallo et al.	2024	0.21	0.65	–	71	0.080	–	–	–
Hunt & Reffert	2023	0.21	0.08	0.41	195	–	–	–	–
He et al.	2022	–	0.25	–	100	–	–	–	–
Kounkel & Covey	2019	0.20	0.15	–	415	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OCSN 55	92.0	98.93	19.71	4.7	2.93	-10.81	38.73	0.0

💡 Note: The % column shows the percentage of members that Theia 792 shares with each listed object.

Visualization

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