Theia 1075
0.09
UTI
0.0
CN
0.05
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
2.5 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.05 Very loose
- CC3 0.38 Low quality
- Clit 0.0 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 1075 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by low extinction. It is catalogued as an 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 | 152.529 | -55.37 | 1.078 | -2.716 | -1.787 | -3.874 |
| Hunt & Reffert | 2023 | 152.516 | -55.312 | 1.053 | -2.772 | -1.766 | -11.502 |
| Kounkel & Covey | 2019 | 153.151 | -55.281 | 1.291 | â | â | -1.979 |
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 | 0.835 | 0.47 | 0.31 | 402 | â | â | â | â |
| Hunt & Reffert | 2023 | 0.90 | 0.59 | 0.31 | 121 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.77 | 0.35 | â | 683 | â | â | â | â |
Hunt & Reffert (2024)
Classified as moving group. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).