Theia 65

0.38 UTI

0.62

C_N

0.64

C_dens

0.62

C_C3

0.0

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 73

Radius (P>50% members) 150.7 [arcmin]

C_N 0.62 Moderately populated
C_dens 0.64 Moderately dense
C_C3 0.62 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 65 is a moderately populated, moderately dense object of intermediate C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is rarely studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Very close Low extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Bronze sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for Theia 65 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	–	84.151	23.453	9.201	5.726	-37.56	13.769
Cavallo et al.	2024	83.862	23.398	9.263	–	–	–
Hunt & Reffert	2023	84.259	23.516	9.263	6.165	-37.626	11.257
He et al.	2022	83.742	23.449	9.199	6.156	-37.341	–

💡 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
Cavallo et al.	2024	0.11	1.19	–	107	0.290	–	–	–
Hunt & Reffert	2023	0.11	0.34	0.51	9	–	–	–	–
He et al.	2022	–	0.05	–	16	–	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OCSN 270	76.7	84.18	23.48	9.22	5.83	-37.57	13.75	0.0

💡 Note: The % column shows the percentage of members that Theia 65 shares with each listed object.

Visualization

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