Theia 58
0.29
UTI
0.0
CN
0.15
Cdens
1.0
CC3
0.16
Clit
1.0
Cdup
Nm (P>50%)
20
Core radius and density
1.9 [pc], 0.8 [pc-2]
- CN 0.0 Sparse
- Cdens 0.15 Very loose
- CC3 1.0 Very high quality
- Clit 0.16 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 58 is a sparse, very loose object of very high 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, young cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with a later 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 | 120.259 | -30.792 | 2.024 | -8.886 | 5.435 | 28.714 |
| Yan et al. | 2026 | 120.216 | -30.75 | 2.038 | -8.816 | 5.52 | â |
| Swiggum et al. | 2024 | 120.216 | -30.75 | 2.038 | -8.816 | 5.52 | 28.027 |
| Hunt & Reffert | 2024 | 120.216 | -30.75 | 2.038 | -8.816 | 5.52 | 27.14 |
| Cavallo et al. | 2024 | 119.794 | -30.727 | 2.035 | â | â | â |
| Hunt & Reffert | 2023 | 120.216 | -30.75 | 2.038 | -8.816 | 5.52 | 27.14 |
| He et al. | 2022 | 120.609 | -31.226 | 2.034 | -8.959 | 5.48 | â |
| Kounkel & Covey | 2019 | 119.581 | -29.796 | 1.968 | â | â | 15.467 |
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 | 0.48 | 0.2 | 0.57 | 24 | -0.140 | 224 | â | â |
| Yan et al. | 2026 | â | â | â | 61 | â | â | â | â |
| Swiggum et al. | 2024 | 0.48 | â | â | 24 | â | 381 | â | â |
| Hunt & Reffert | 2024 | 0.48 | 0.15 | 0.57 | 24 | â | 68(1) | â | â |
| Cavallo et al. | 2024 | 0.52 | 0.50 | â | 11 | -0.140 | â | â | â |
| Hunt & Reffert | 2023 | 0.48 | 0.15 | 0.57 | 24 | â | â | â | â |
| He et al. | 2022 | â | 0.35 | â | 32 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.51 | 0.20 | â | 25 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Yan et al. (2026)
Number of WDs: expected from single-star evolution N=1, with probability of formation through binary evolution >=0.5 N=2.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).