Theia 180
0.32
UTI
0.31
CN
0.8
Cdens
0.5
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
15.8 [arcmin]
- CN 0.31 Poorly populated
- Cdens 0.8 Dense
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 180 is a poorly populated, dense object of intermediate C3 quality. Its parallax locates it at a close distance, below 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.
Close
Low extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 308.564 | 6.861 | 1.655 | 3.002 | 1.106 | -6.128 |
| Zhang et al. | 2024 | 308.587 | 6.887 | â | â | â | â |
| Cavallo et al. | 2024 | 308.239 | 6.912 | 1.646 | â | â | â |
| Hunt & Reffert | 2023 | 308.587 | 6.887 | 1.648 | 2.928 | 1.098 | -7.682 |
đĄ 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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.026* | â | â | â |
| Cavallo et al. | 2024 | 0.63 | 0.29 | â | 245 | 0.440 | â | â | â |
| Hunt & Reffert | 2023 | 0.60 | 0.14 | 0.83 | 315 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.