Theia 3309
0.09
UTI
0.0
CN
0.07
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
25.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.07 Very loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 3309 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 low 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
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 | 95.882 | 10.687 | 0.932 | -0.04 | -3.829 | 43.532 |
| Cavallo et al. | 2024 | 95.871 | 10.822 | 0.918 | â | â | â |
| Hunt & Reffert | 2023 | 95.838 | 10.751 | 0.919 | -0.026 | -3.836 | 46.611 |
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 | 1.17 | 0.92 | â | 347 | 0.150 | â | â | â |
| Hunt & Reffert | 2023 | 1.06 | 0.62 | 0.99 | 565 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.