Theia 322
0.14
UTI
0.0
CN
0.35
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
33.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.35 Loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 322 is a sparse, loose object of low C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a metal-rich, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Very close
Low extinction
Metal-rich
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 12.229 | 50.809 | 2.681 | 4.981 | -1.57 | -20.211 |
| Cavallo et al. | 2024 | 12.462 | 50.942 | 2.783 | â | â | â |
| Hunt & Reffert | 2023 | 12.263 | 50.773 | 2.773 | 4.993 | -1.587 | -24.905 |
| He et al. | 2022 | 12.435 | 50.219 | 2.186 | 7.351 | -3.107 | â |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.39 | 1.13 | â | 52 | 0.530 | â | â | â |
| Hunt & Reffert | 2023 | 0.34 | 0.99 | 0.53 | 5 | â | â | â | â |
| He et al. | 2022 | â | 0.40 | â | 79 | â | â | â | â |
Cavallo et al. (2024)
Wood sample.
Hunt & Reffert (2024)
Classified as a moving group.