Theia 3849

0.12 UTI

0.0

C_N

0.08

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 21

Radius (P>50% members) 8.2 [arcmin]

C_N 0.0 Sparse
C_dens 0.08 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Theia 3849 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

Note: This object shares a large percentage of members with a later reported entry. 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.

Relatively close Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for Theia 3849 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	–	114.058	-21.689	0.339	-2.532	3.163	–
Hunt & Reffert	2024	114.14	-21.779	0.344	-2.503	3.189	–
Cavallo et al.	2024	114.064	-21.69	0.343	–	–	–
Hunt & Reffert	2023	114.14	-21.779	0.344	-2.503	3.189	–

💡 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]	Bfr	BSS
Hunt & Reffert	2024	–	–	–	–	–	60*	–	–
Cavallo et al.	2024	2.68	1.11	–	78	0.100	–	–	–
Hunt & Reffert	2023	2.63	0.92	1.23	57	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 4155	84.0	113.99	-21.64	0.35	-2.53	3.17	45.77	0.13

💡 Note: The % column shows the percentage of members that Theia 3849 shares with each listed object.

Visualization

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