Theia 589
0.13
UTI
0.0
CN
0.04
Cdens
0.5
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
24
Core radius and density
4.9 [pc], 0.2 [pc-2]
- CN 0.0 Sparse
- Cdens 0.04 Very loose
- CC3 0.5 Intermediate 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 589 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate 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 | 268.614 | -22.192 | 1.077 | 2.983 | -0.666 | -16.088 |
| Hunt & Reffert | 2024 | 268.657 | -22.007 | 1.069 | 2.972 | -0.653 | -50.763 |
| Cavallo et al. | 2024 | 268.623 | -22.284 | 1.07 | â | â | â |
| Hunt & Reffert | 2023 | 268.657 | -22.007 | 1.069 | 2.972 | -0.653 | -50.763 |
| Kounkel & Covey | 2019 | 268.713 | -22.309 | 1.188 | â | â | 3.424 |
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 | 1.45 | 0.56 | 140 | -0.100 | 60 | â | â |
| Hunt & Reffert | 2024 | 0.86 | 1.45 | 0.56 | 62 | â | 60(1) | â | â |
| Cavallo et al. | 2024 | 1.06 | 1.21 | â | 219 | -0.100 | â | â | â |
| Hunt & Reffert | 2023 | 0.86 | 1.45 | 0.56 | 62 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.84 | 1.72 | â | 226 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Silver 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).