Theia 436
0.08
UTI
0.0
CN
0.08
Cdens
0.25
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
22
Core radius and density
2.0 [pc], 0.4 [pc-2]
- CN 0.0 Sparse
- Cdens 0.08 Very loose
- CC3 0.25 Low 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 436 is a sparse, very loose object of low 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, 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 | 219.432 | -65.803 | 4.643 | -14.93 | -18.897 | 11.543 |
| Cavallo et al. | 2024 | 220.215 | -65.56 | 4.645 | â | â | â |
| Hunt & Reffert | 2023 | 221.869 | -65.401 | 4.657 | -15.31 | -18.915 | 13.767 |
| Kounkel & Covey | 2019 | 218.494 | -65.55 | 4.143 | â | â | -14.869 |
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 | 0.22 | 0.36 | 0.34 | 120 | 0.180 | â | â | â |
| Cavallo et al. | 2024 | 0.21 | 0.37 | â | 120 | 0.180 | â | â | â |
| Hunt & Reffert | 2023 | 0.22 | 0.09 | 0.34 | 108 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.24 | 0.36 | â | 172 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).