Theia 1918
0.03
UTI
0.0
CN
0.19
Cdens
0.5
CC3
0.0
Clit
0.2
Cdup
Radius (P>50% members)
42.1 [arcmin]
- CN 0.0 Sparse
- Cdens 0.19 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 0.2 Likely duplicate
Overview
Theia 1918 is a sparse, very loose object of intermediate 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 was recently reported in the literature.
â ī¸ Warning: This is likely a duplicate object, which shares a large percentage of members with at least one previously 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 | 129.259 | -48.129 | 2.446 | -10.479 | 2.242 | 11.516 |
| Cavallo et al. | 2024 | 130.539 | -47.925 | 2.445 | â | â | â |
| Hunt & Reffert | 2023 | 129.195 | -48.117 | 2.44 | -10.636 | 2.0 | 11.439 |
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 | 0.42 | 0.57 | â | 12 | -0.160 | â | â | â |
| Hunt & Reffert | 2023 | 0.40 | 0.23 | 0.67 | 24 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.