Theia 7938

0.01 UTI

0.55

C_N

0.41

C_dens

0.62

C_C3

0.06

C_lit

0.03

C_dup

N_m (P>50%) 59

Core radius and density 1.5 [pc], 2.0 [pc^-2]

C3 classification AC

C_N 0.55 Moderately populated
C_dens 0.41 Loose
C_C3 0.62 Intermediate quality
C_lit 0.06 Rarely studied
C_dup 0.03 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Theia 7938 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is very 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 Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for Theia 7938 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–	62.684	57.14	0.706	0.95	-1.084	-29.84
Zhang et al.	2024	62.684	57.148	–	–	–	–
Hunt & Reffert	2024	62.684	57.148	0.705	0.947	-1.074	-19.106
Cavallo et al.	2024	62.66	57.126	0.714	–	–	–
Hunt & Reffert	2023	62.684	57.148	0.705	0.947	-1.074	-19.106

💡 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–	1.35	1.88	1.73	133	0.450	180	–	–
Zhang et al.	2024	–	–	–	–	0.089⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.35	1.88	1.73	133	–	180⁽¹⁾	–	–
Cavallo et al.	2024	1.61	1.99	–	83	0.810	–	–	–
Hunt & Reffert	2023	1.35	1.88	1.73	133	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 12760	96.6	62.69	57.14	0.71	0.95	-1.08	-29.84	0.12
HXHWL 73	61.0	62.69	57.14	0.71	0.98	-1.08	-29.84	0.28

💡 Note: The % column shows the percentage of members that Theia 7938 shares with each listed object.

Visualization

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