Theia 708

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0.18 UTI
0.52
CN
0.21
Cdens
0.38
CC3
0.25
Clit
0.55
Cdup
Radius (P>50% members) 53.4 [arcmin]
  • CN 0.52 Moderately populated
  • Cdens 0.21 Very loose
  • CC3 0.38 Low quality
  • Clit 0.25 Poorly studied
  • Cdup 0.55 Likely unique

Overview

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Theia 708 is a moderately populated, very loose object of low C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low 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.

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Very close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

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

Data

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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 290.923 53.231 2.187 1.045 -2.183 -24.949
Hu & Soubiran 2025 291.17 53.457 – – – –
Zhang et al. 2024 290.949 53.291 – – – –
Cavallo et al. 2024 291.17 53.457 2.186 – – –
Hunt & Reffert 2023 290.949 53.291 2.176 1.093 -2.159 -25.294

💡 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
Hu & Soubiran 2025 – – – – -0.320* – – –
Zhang et al. 2024 – – – – -0.001* – – –
Cavallo et al. 2024 0.46 0.33 – 871 0.230 – – –
Hunt & Reffert 2023 0.44 0.09 0.54 439 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 1187 45.3 291.35 53.68 2.18 1.07 -2.08 -26.15 0.15

💡 Note: The % column shows the percentage of members that Theia 708 shares with each listed object.

Visualization

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