Theia 1082
0.11
UTI
0.0
CN
0.08
Cdens
0.25
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
23
Core radius and density
1.5 [pc], 0.4 [pc-2]
- CN 0.0 Sparse
- Cdens 0.08 Very loose
- CC3 0.25 Low quality
- Clit 0.1 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 1082 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, above 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 | 193.248 | -59.062 | 1.194 | -9.867 | -3.502 | -22.305 |
| Yan et al. | 2026 | 193.652 | -58.96 | 1.179 | -9.883 | -3.399 | â |
| Hunt & Reffert | 2024 | 193.652 | -58.96 | 1.179 | -9.883 | -3.399 | -20.713 |
| Cavallo et al. | 2024 | 192.84 | -58.986 | 1.179 | â | â | â |
| Hunt & Reffert | 2023 | 193.652 | -58.96 | 1.179 | -9.883 | -3.399 | -20.713 |
| Kounkel & Covey | 2019 | 194.106 | -58.0 | 1.175 | â | â | 2.186 |
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 | 0.81 | 0.54 | 0.52 | 158 | 0.170 | 90 | â | â |
| Yan et al. | 2026 | â | â | â | 158 | â | â | â | â |
| Hunt & Reffert | 2024 | 0.80 | 0.36 | 0.52 | 159 | â | 90(1) | â | â |
| Cavallo et al. | 2024 | 0.82 | 0.72 | â | 107 | 0.170 | â | â | â |
| Hunt & Reffert | 2023 | 0.80 | 0.36 | 0.52 | 158 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.85 | 0.74 | â | 777 | 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=4, with probability of formation through binary evolution >=0.5 N=1.
Palma et al. (2025)
Classified as optical pair P570, along with Theia_771.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).