Theia 66
0.60
UTI
0.51
CN
1.0
Cdens
1.0
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
39.3 [arcmin]
- CN 0.51 Moderately populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
Theia 66 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Very close
Low 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 | 68.304 | 18.009 | 6.883 | 12.083 | -18.994 | 17.869 |
| Zhang et al. | 2024 | 68.144 | 18.103 | â | â | â | â |
| Cavallo et al. | 2024 | 68.85 | 17.804 | 6.88 | â | â | â |
| Hunt & Reffert | 2023 | 68.144 | 18.103 | 6.88 | 12.202 | -18.932 | 18.989 |
| He et al. | 2022 | 68.245 | 18.01 | 6.874 | 12.278 | -18.898 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.001* | â | â | â |
| Cavallo et al. | 2024 | 0.15 | 1.80 | â | 19 | 0.080 | â | â | â |
| Hunt & Reffert | 2023 | 0.14 | 0.44 | 1.47 | 6 | â | â | â | â |
| He et al. | 2022 | â | 0.15 | â | 4 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Bronze sample.
Hunt & Reffert (2024)
Classified as a moving group.