Theia 2822

0.06 UTI

0.33

C_N

0.04

C_dens

0.75

C_C3

0.03

C_lit

0.24

C_dup

N_m (P>50%) 33

Core radius and density 4.1 [pc], 0.2 [pc^-2]

C3 classification AB

C_N 0.33 Poorly populated
C_dens 0.04 Very loose
C_C3 0.75 High quality
C_lit 0.03 Rarely 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 2822 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, 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.

Very distant Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for Theia 2822 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–	118.037	-25.494	0.163	-2.153	3.146	89.36
Hunt & Reffert	2024	118.046	-25.491	0.159	-2.159	3.132	89.352
Cavallo et al.	2024	118.04	-25.518	0.158	–	–	–
Hunt & Reffert	2023	118.046	-25.491	0.159	-2.159	3.132	89.352

💡 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–	6.05	0.63	0.7	282	0.380	168	–	–
Hunt & Reffert	2024	6.05	0.63	0.70	282	–	168⁽¹⁾	–	–
Cavallo et al.	2024	4.27	0.30	–	339	0.380	–	–	–
Hunt & Reffert	2023	6.05	0.63	0.70	282	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
UBC 1392	75.8	118.05	-25.49	0.16	-2.15	3.15	89.36	0.21

💡 Note: The % column shows the percentage of members that Theia 2822 shares with each listed object.

Visualization

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