Theia 622
0.16
UTI
0.0
CN
0.34
Cdens
0.38
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
20
Core radius and density
1.0 [pc], 1.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.34 Loose
- CC3 0.38 Low quality
- Clit 0.03 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 622 is a sparse, 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 metal-poor, 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 | 280.519 | 8.638 | 1.811 | -1.659 | -8.203 | -10.559 |
| Cavallo et al. | 2024 | 280.529 | 8.606 | 1.804 | â | â | â |
| Hunt & Reffert | 2023 | 280.511 | 8.587 | 1.807 | -1.65 | -8.165 | -6.933 |
| Kounkel & Covey | 2019 | 280.461 | 8.813 | 2.258 | â | â | 3.388 |
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 | 0.53 | 0.65 | 0.45 | 130 | -0.630 | â | â | â |
| Cavallo et al. | 2024 | 0.55 | 1.61 | â | 41 | -0.630 | â | â | â |
| Hunt & Reffert | 2023 | 0.53 | 0.65 | 0.45 | 130 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.44 | 0.36 | â | 279 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).