Theia 5015
0.21
UTI
0.0
CN
0.15
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.8 [pc], 0.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.15 Very loose
- CC3 0.75 High quality
- Clit 0.06 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 5015 is a sparse, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 267.085 | -24.185 | 0.837 | -0.3 | -0.079 | -47.982 |
| Hu & Soubiran | 2025 | 267.229 | -23.982 | â | â | â | â |
| Hunt & Reffert | 2024 | 267.059 | -24.21 | 0.843 | -0.272 | -0.066 | -35.627 |
| Cavallo et al. | 2024 | 267.229 | -23.982 | 0.843 | â | â | â |
| Hunt & Reffert | 2023 | 267.059 | -24.21 | 0.843 | -0.272 | -0.066 | -35.627 |
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 | 1.13 | 1.75 | 0.33 | 224 | -0.290 | 187 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.150(5) | â | â | â |
| Hunt & Reffert | 2024 | 1.13 | 1.75 | 0.33 | 224 | â | 187(1) | â | â |
| Cavallo et al. | 2024 | 0.99 | 2.04 | â | 513 | -0.430 | â | â | â |
| Hunt & Reffert | 2023 | 1.13 | 1.75 | 0.33 | 224 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).