Theia 1297

0.25 UTI

0.25

C_N

0.19

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 1.3 [pc], 0.9 [pc^-2]

C3 classification AB

C_N 0.25 Poorly populated
C_dens 0.19 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 1297 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied 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.

Close Low extinction Near-solar metallicity Intermediate age

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 1297 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–	322.939	66.032	1.942	0.676	2.612	-7.426
Cavallo et al.	2024	322.799	66.051	1.936	–	–	–
Hunt & Reffert	2023	323.039	66.07	1.936	0.729	2.65	-7.0
Kounkel & Covey	2019	324.893	65.942	1.835	–	–	0.422

💡 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–	0.51	0.49	1.45	457	-0.100	–	–	–
Cavallo et al.	2024	0.51	0.69	–	457	-0.100	–	–	–
Hunt & Reffert	2023	0.50	0.49	1.45	406	–	–	–	–
Kounkel & Covey	2019	0.55	0.13	–	1541	–	–	–	–

Visualization

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