Theia 1643
0.20
UTI
0.81
CN
1.0
Cdens
0.75
CC3
0.0
Clit
0.38
Cdup
Radius (P>50% members)
9.7 [arcmin]
- CN 0.81 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.0 Rarely studied
- Cdup 0.38 Possibly duplicate
Overview
Theia 1643 is a rich, very 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 massive, near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.
â ī¸ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry, and a very small percentage with at least one entry reported in the same catalogue. See table with shared members information.
Relatively close
Moderate extinction
Massive
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 | 250.306 | -48.972 | 0.845 | 0.804 | -4.526 | -28.041 |
| Hunt & Reffert | 2024 | 250.33 | -49.059 | 0.84 | 0.66 | -4.619 | -20.943 |
| Cavallo et al. | 2024 | 250.41 | -49.058 | 0.848 | â | â | â |
| Hunt & Reffert | 2023 | 250.33 | -49.059 | 0.84 | 0.66 | -4.619 | -20.943 |
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 | 1225* | â | â |
| Cavallo et al. | 2024 | 1.08 | 2.35 | â | 13 | -0.030 | â | â | â |
| Hunt & Reffert | 2023 | 1.10 | 2.38 | 2.73 | 5 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Silver sample.