Theia 31
0.54
UTI
0.69
CN
1.0
Cdens
1.0
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
22.3 [arcmin]
- CN 0.69 Moderately populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 31 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 (see Parameters). It is rarely 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 | 126.956 | -34.757 | 2.803 | -6.94 | 10.853 | 21.016 |
| Cavallo et al. | 2024 | 126.857 | -34.898 | 2.803 | â | â | â |
| Hunt & Reffert | 2023 | 127.002 | -34.911 | 2.804 | -7.006 | 10.853 | 11.621 |
| He et al. | 2022 | 126.887 | -34.8 | 2.803 | -6.978 | 10.874 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Cavallo et al. | 2024 | 0.36 | 0.78 | â | 5 | -0.150 | â | â | â |
| Hunt & Reffert | 2023 | 0.35 | 0.31 | 0.88 | 7 | â | â | â | â |
| He et al. | 2022 | â | 0.15 | â | 7 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.