Theia 2395

0.25 UTI

0.0

C_N

0.11

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.9 [pc], 0.6 [pc^-2]

C3 classification AA

C_N 0.0 Sparse
C_dens 0.11 Very loose
C_C3 1.0 Very high quality
C_lit 0.06 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 2395 is a sparse, very loose object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-rich, very young cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

⚠️ 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.

Distant High extinction Metal-rich Very young

Palma et al. (2025)
Part of multiple system G179, along with CWNU_2364 and HSC_486.

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.70 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.70 (50th percentile).

Data

🔍 Search references for Theia 2395 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–	295.105	24.238	0.237	-2.345	-5.584	36.367
Hunt & Reffert	2024	295.109	24.244	0.224	-2.37	-5.516	21.327
Cavallo et al.	2024	295.157	24.122	0.226	–	–	–
Hunt & Reffert	2023	295.109	24.244	0.224	-2.37	-5.516	21.327

💡 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–	4.03	3.44	2.77	17	0.740	614	–	–
Hunt & Reffert	2024	4.03	3.44	2.77	17	–	614⁽¹⁾	–	–
Cavallo et al.	2024	4.21	2.73	–	89	0.740	–	–	–
Hunt & Reffert	2023	4.03	3.44	2.77	17	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 486	76.0	295.1	24.24	0.24	-2.32	-5.6	36.37	0.25

💡 Note: The % column shows the percentage of members that Theia 2395 shares with each listed object.

Visualization

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