Theia 100
0.10
UTI
0.68
CN
0.35
Cdens
1.0
CC3
0.0
Clit
0.25
Cdup
Stellar density (N50/rad)
1.7 [N/pc2]
- CN 0.68 Moderately populated
- Cdens 0.35 Loose
- CC3 1.0 Very high quality
- Clit 0.0 Rarely studied
- Cdup 0.25 Possibly duplicate
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
Theia 100 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low 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 possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 346.904 | 45.932 | 2.036 | -0.806 | -3.026 | -12.975 |
| Zhang et al. | 2024 | 346.888 | 46.068 | â | â | â | â |
| Cavallo et al. | 2024 | 346.969 | 45.567 | 2.062 | â | â | â |
| Hunt & Reffert | 2023 | 346.888 | 46.068 | 2.066 | -0.826 | -3.143 | -13.655 |
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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 0.48 | 0.535 | 0.68 | 12 | -0.083 | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.036(1) | â | â | â |
| Cavallo et al. | 2024 | 0.50 | 0.74 | â | 7 | -0.130 | â | â | â |
| Hunt & Reffert | 2023 | 0.46 | 0.33 | 0.68 | 16 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G195, along with OCSN_36 and HSC_825.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.