Theia 2185

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0.01 UTI
0.27
CN
0.23
Cdens
0.38
CC3
0.25
Clit
0.04
Cdup
Radius (P>50% members) 6.2 [arcmin]
  • CN 0.27 Poorly populated
  • Cdens 0.23 Very loose
  • CC3 0.38 Low quality
  • Clit 0.25 Poorly studied
  • Cdup 0.04 Very likely duplicate

Overview

â„šī¸
Theia 2185 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate 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.

âš ī¸ 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 Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 160.579 -57.147 0.37 -8.992 2.707 -18.528
Hu & Soubiran 2025 160.596 -57.165 – – – –
Hunt & Reffert 2024 160.581 -57.154 0.368 -9.0 2.705 -14.046
Cavallo et al. 2024 160.596 -57.165 0.37 – – –
Hunt & Reffert 2023 160.581 -57.154 0.368 -9.0 2.705 -14.046

💡 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 – – – – -0.290* – – –
Hunt & Reffert 2024 – – – – – 67* – –
Cavallo et al. 2024 2.37 0.95 – 1023 0.070 – – –
Hunt & Reffert 2023 2.45 0.65 0.95 908 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 1663 96.3 160.57 -57.14 0.37 -8.99 2.71 -18.53 0.18

💡 Note: The % column shows the percentage of members that Theia 2185 shares with each listed object.

Visualization

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