Theia 1922
0.08
UTI
0.0
CN
0.14
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
10.5 [arcmin]
- CN 0.0 Sparse
- Cdens 0.14 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 1922 is a sparse, very loose object of low C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It was recently reported 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.
Relatively close
Moderate 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 | 327.473 | 51.686 | 0.547 | -2.76 | -4.138 | â |
| Cavallo et al. | 2024 | 327.651 | 51.797 | 0.542 | â | â | â |
| Hunt & Reffert | 2023 | 327.361 | 51.678 | 0.541 | -2.759 | -4.135 | 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 | 1.67 | 1.53 | â | 148 | -0.310 | â | â | â |
| Hunt & Reffert | 2023 | 1.75 | 1.30 | 1.36 | 139 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.