Theia 1694

0.19 UTI

0.0

C_N

0.11

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 18

Core radius and density 2.3 [pc], 0.6 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 0.75 High quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Theia 1694 is a sparse, very loose object of 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 very metal-poor, young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Very metal-poor Young

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.47 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.47 (50th percentile).

Data

🔍 Search references for Theia 1694 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	275.069	-14.934	0.631	0.055	-2.021	–
Hunt & Reffert	2024	275.082	-15.018	0.636	0.042	-2.029	-0.795
Cavallo et al.	2024	275.06	-14.811	0.635	–	–	–
Hunt & Reffert	2023	275.082	-15.018	0.636	0.042	-2.029	-0.795

💡 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–	1.48	2.77	2.31	27	-1.950	202	–	–
Hunt & Reffert	2024	1.48	2.77	2.31	27	–	202⁽¹⁾	–	–
Cavallo et al.	2024	3.19	3.53	–	18	-1.950	–	–	–
Hunt & Reffert	2023	1.48	2.77	2.31	27	–	–	–	–

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

Visualization

ℹ️

1 2