Theia 1645
0.04
UTI
0.44
CN
0.75
Cdens
0.75
CC3
0.0
Clit
0.09
Cdup
Radius (P>50% members)
10.4 [arcmin]
- CN 0.44 Poorly populated
- Cdens 0.75 Dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.09 Very likely duplicate
Overview
Theia 1645 is a poorly populated, dense object of high 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, very young cluster (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.
Relatively close
Moderate extinction
Near-solar metallicity
Very young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 262.752 | -33.48 | 0.883 | 2.507 | -1.917 | -4.183 |
| Hunt & Reffert | 2024 | 262.758 | -33.468 | 0.89 | 2.436 | -1.936 | -4.202 |
| Cavallo et al. | 2024 | 262.653 | -33.534 | 0.891 | â | â | â |
| Hunt & Reffert | 2023 | 262.758 | -33.468 | 0.89 | 2.436 | -1.936 | -4.202 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 325* | â | â |
| Cavallo et al. | 2024 | 0.99 | 1.66 | â | 9 | -0.200 | â | â | â |
| Hunt & Reffert | 2023 | 1.06 | 1.57 | 1.87 | 16 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.