Theia 1928

0.00 UTI

0.5

C_N

0.29

C_dens

0.75

C_C3

0.03

C_lit

0.0

C_dup

N_m (P>50%) 50

Core radius and density 1.4 [pc], 1.4 [pc^-2]

C3 classification AB

C_N 0.5 Moderately populated
C_dens 0.29 Loose
C_C3 0.75 High quality
C_lit 0.03 Rarely studied
C_dup 0.0 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Theia 1928 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is very 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 Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for Theia 1928 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	288.822	14.417	0.362	-1.704	-2.518	–
Hunt & Reffert	2024	288.83	14.442	0.371	-1.683	-2.514	8.19
Cavallo et al.	2024	288.815	14.411	0.369	–	–	–
Hunt & Reffert	2023	288.83	14.442	0.371	-1.683	-2.514	8.19

💡 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–	2.5	2.91	1.21	155	0.000	402	–	–
Hunt & Reffert	2024	2.50	2.91	1.21	154	–	402⁽¹⁾	–	–
Cavallo et al.	2024	2.37	2.95	–	324	0.000	–	–	–
Hunt & Reffert	2023	2.50	2.90	1.21	155	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
PHOC 8	100.0	288.81	14.4	0.36	-1.71	-2.51	-9.55	0.32

💡 Note: The % column shows the percentage of members that Theia 1928 shares with each listed object.

Visualization

ℹ️

1 2