Theia 7057

0.19 UTI

0.0

C_N

0.15

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.1 [pc], 0.8 [pc^-2]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.15 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

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Theia 7057 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate distance, near 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: 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 Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for Theia 7057 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–	116.18	-25.396	0.323	-2.771	4.439	–
Hunt & Reffert	2024	116.173	-25.365	0.304	-2.769	4.451	69.838
Cavallo et al.	2024	116.218	-25.396	0.31	–	–	–
Hunt & Reffert	2023	116.173	-25.365	0.304	-2.769	4.451	69.838

💡 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–	2.73	0.5	0.88	470	0.090	117	–	–
Hunt & Reffert	2024	2.73	0.50	0.88	470	–	117⁽¹⁾	–	–
Cavallo et al.	2024	3.09	0.88	–	162	0.090	–	–	–
Hunt & Reffert	2023	2.73	0.50	0.88	470	–	–	–	–

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

Visualization

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