Theia 711

0.13 UTI

0.0

C_N

0.06

C_dens

0.38

C_C3

0.1

C_lit

1.0

C_dup

N_m (P>50%) 22

Core radius and density 2.1 [pc], 0.3 [pc^-2]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.06 Very loose
C_C3 0.38 Low quality
C_lit 0.1 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

Theia 711 is a sparse, very loose object of low 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, young cluster (see Parameters). It is rarely studied in the literature.

Note: This object shares a significant 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.

Very close Low extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G152, along with HSC_236 and OCSN_6.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.72 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.72 (50th percentile).

Data

🔍 Search references for Theia 711 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	282.208	-7.559	2.296	1.128	-11.4	-10.747
Swiggum et al.	2024	282.094	-7.744	2.305	1.065	-11.383	-10.146
Hunt & Reffert	2024	282.094	-7.744	2.305	1.065	-11.383	-9.119
Cavallo et al.	2024	281.992	-7.4	2.299	–	–	–
Hunt & Reffert	2023	282.094	-7.744	2.305	1.065	-11.383	-9.119
Kounkel & Covey	2019	282.181	-7.177	2.252	–	–	0.169

💡 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–	0.43	0.855	1.92	62	-0.030	154	–	–
Swiggum et al.	2024	0.43	–	–	62	–	254	–	–
Hunt & Reffert	2024	0.41	0.86	1.92	62	–	53⁽¹⁾	–	–
Cavallo et al.	2024	0.45	1.43	–	30	-0.030	–	–	–
Hunt & Reffert	2023	0.41	0.85	1.92	62	–	–	–	–
Kounkel & Covey	2019	0.44	0.61	–	354	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OCSN 7	68.0	282.41	-7.21	2.3	1.14	-11.29	-7.59	0.02

💡 Note: The % column shows the percentage of members that Theia 711 shares with each listed object.

Visualization

ℹ️

1 2