Theia 882
0.24
UTI
0.26
CN
0.23
Cdens
0.62
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
26
Core radius and density
1.4 [pc], 1.1 [pc-2]
- CN 0.26 Poorly populated
- Cdens 0.23 Very loose
- CC3 0.62 Intermediate quality
- Clit 0.03 Rarely studied
- Cdup 1.0 Unique
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 882 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 173.143 | -69.216 | 1.231 | -7.982 | 1.552 | 3.953 |
| Cavallo et al. | 2024 | 173.0 | -69.17 | 1.221 | â | â | â |
| Hunt & Reffert | 2023 | 173.228 | -69.247 | 1.222 | -7.979 | 1.519 | 1.927 |
| Kounkel & Covey | 2019 | 172.948 | -69.237 | 1.263 | â | â | 4.124 |
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 | 0.79 | 0.66 | 0.67 | 218 | 0.190 | â | â | â |
| Cavallo et al. | 2024 | 0.81 | 0.77 | â | 186 | 0.190 | â | â | â |
| Hunt & Reffert | 2023 | 0.78 | 0.53 | 0.67 | 218 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.79 | 0.66 | â | 465 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).