Theia 139
0.22
UTI
0.31
CN
0.39
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
42.6 [arcmin]
- CN 0.31 Poorly populated
- Cdens 0.39 Loose
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
Theia 139 is a poorly populated, loose object of low 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, young cluster (see Parameters). It was recently reported in the literature.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Very close
Low extinction
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 82.511 | -2.114 | 3.114 | -2.783 | -4.261 | 14.731 |
| Zhang et al. | 2024 | 82.51 | -2.11 | â | â | â | â |
| Cavallo et al. | 2024 | 83.403 | -1.296 | 3.056 | â | â | â |
| Hunt & Reffert | 2023 | 82.51 | -2.11 | 3.054 | -2.902 | -4.27 | 16.194 |
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 | 0.037* | â | â | â |
| Cavallo et al. | 2024 | 0.34 | 0.46 | â | 35 | 0.020 | â | â | â |
| Hunt & Reffert | 2023 | 0.32 | 0.18 | 0.88 | 95 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.