Theia 844
0.34
UTI
0.5
CN
0.18
Cdens
0.5
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
39.1 [arcmin]
- CN 0.5 Moderately populated
- Cdens 0.18 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
Theia 844 is a moderately populated, very loose object of intermediate C3 quality. Its parallax locates it at a 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.
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 | 310.531 | 42.288 | 1.526 | 1.538 | -8.752 | 8.94 |
| Hu & Soubiran | 2025 | 310.431 | 42.304 | â | â | â | â |
| Zhang et al. | 2024 | 310.109 | 41.922 | â | â | â | â |
| Cavallo et al. | 2024 | 310.431 | 42.304 | 1.525 | â | â | â |
| Hunt & Reffert | 2023 | 310.109 | 41.922 | 1.522 | 1.529 | -8.699 | 6.601 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.220* | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.008* | â | â | â |
| Cavallo et al. | 2024 | 0.61 | 0.46 | â | 912 | 0.210 | â | â | â |
| Hunt & Reffert | 2023 | 0.63 | 0.24 | 0.49 | 646 | 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.