Theia 391
0.25
UTI
0.69
CN
0.27
Cdens
0.75
CC3
0.0
Clit
0.72
Cdup
Radius (P>50% members)
62.1 [arcmin]
- CN 0.69 Moderately populated
- Cdens 0.27 Loose
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.72 Likely unique
Overview
Theia 391 is a moderately populated, loose object of high 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, 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
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 356.339 | 55.146 | 2.246 | 5.132 | -4.41 | -13.087 |
| Zhang et al. | 2024 | 356.219 | 55.17 | â | â | â | â |
| Cavallo et al. | 2024 | 356.658 | 55.045 | 2.206 | â | â | â |
| Hunt & Reffert | 2023 | 356.219 | 55.17 | 2.206 | 5.198 | -4.456 | -12.664 |
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 | -0.034* | â | â | â |
| Cavallo et al. | 2024 | 0.46 | 0.71 | â | 170 | 0.510 | â | â | â |
| Hunt & Reffert | 2023 | 0.43 | 0.41 | 0.80 | 146 | 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.