Theia 2921

0.02 UTI

0.25

C_N

0.06

C_dens

0.62

C_C3

0.03

C_lit

0.12

C_dup

N_m (P>50%) 25

Core radius and density 3.2 [pc], 0.3 [pc^-2]

C3 classification AC

C_N 0.25 Poorly populated
C_dens 0.06 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 0.12 Likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 2921 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close 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.

⚠️ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Data

🔍 Search references for Theia 2921 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–	294.856	23.733	0.756	-0.589	-3.626	-20.229
Hunt & Reffert	2024	294.802	23.803	0.761	-0.578	-3.655	-15.365
Cavallo et al.	2024	294.865	23.685	0.769	–	–	–
Hunt & Reffert	2023	294.802	23.803	0.761	-0.578	-3.655	-15.365

💡 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–	1.27	1.84	0.79	84	0.390	80	–	–
Hunt & Reffert	2024	1.27	1.84	0.79	84	–	80⁽¹⁾	–	–
Cavallo et al.	2024	1.43	1.98	–	47	0.390	–	–	–
Hunt & Reffert	2023	1.27	1.84	0.79	84	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 373	88.0	294.91	23.66	0.76	-0.58	-3.63	-20.23	0.2

💡 Note: The % column shows the percentage of members that Theia 2921 shares with each listed object.

Visualization

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