Theia 863
0.53
UTI
0.64
CN
1.0
Cdens
0.5
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
17.0 [arcmin]
- CN 0.64 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.5 Intermediate quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
Theia 863 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported in the literature.
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 | 41.371 | 56.495 | 1.4 | -0.985 | -5.283 | -33.231 |
| Zhang et al. | 2024 | 41.406 | 56.453 | â | â | â | â |
| Hunt & Reffert | 2024 | 41.406 | 56.453 | 1.383 | -1.03 | -5.297 | -31.628 |
| Cavallo et al. | 2024 | 41.121 | 56.514 | 1.39 | â | â | â |
| Hunt & Reffert | 2023 | 41.406 | 56.453 | 1.383 | -1.03 | -5.297 | -31.628 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.135* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 103* | â | â |
| Cavallo et al. | 2024 | 0.75 | 1.61 | â | 155 | 0.220 | â | â | â |
| Hunt & Reffert | 2023 | 0.68 | 1.39 | 1.54 | 165 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.