Theia 200
0.02
UTI
0.25
CN
0.14
Cdens
0.5
CC3
0.0
Clit
0.12
Cdup
Stellar density (N50/rad)
0.7 [N/pc2]
- CN 0.25 Poorly populated
- Cdens 0.14 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.0 Rarely studied
- Cdup 0.12 Likely 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 200 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 18.877 | 60.756 | 1.155 | 2.947 | -1.691 | -15.76 |
| Hunt & Reffert | 2024 | 18.701 | 60.75 | 1.148 | 2.959 | -1.672 | -14.795 |
| Cavallo et al. | 2024 | 19.113 | 60.914 | 1.148 | â | â | â |
| Hunt & Reffert | 2023 | 18.701 | 60.75 | 1.148 | 2.959 | -1.672 | -14.795 |
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 | 0.86 | 0.98 | 0.27 | 184 | 0.270 | 75 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 75(1) | â | â |
| Cavallo et al. | 2024 | 0.89 | 1.07 | â | 214 | 0.270 | â | â | â |
| Hunt & Reffert | 2023 | 0.83 | 0.89 | 0.27 | 155 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P404, along with HSC_1022.
Cavallo et al. (2024)
Gold sample.