Theia 624
0.07
UTI
0.0
CN
0.06
Cdens
0.25
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
21
Core radius and density
2.4 [pc], 0.3 [pc-2]
- CN 0.0 Sparse
- Cdens 0.06 Very loose
- CC3 0.25 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 624 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 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 | 247.692 | -44.519 | 1.514 | -1.643 | -7.565 | -18.792 |
| Cavallo et al. | 2024 | 247.955 | -44.658 | 1.523 | â | â | â |
| Hunt & Reffert | 2023 | 247.45 | -44.55 | 1.526 | -1.543 | -7.547 | -29.8 |
| Kounkel & Covey | 2019 | 248.905 | -45.301 | 2.19 | â | â | -4.447 |
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 | 0.62 | 0.58 | 0.32 | 120 | 0.150 | â | â | â |
| Cavallo et al. | 2024 | 0.66 | 0.84 | â | 120 | 0.150 | â | â | â |
| Hunt & Reffert | 2023 | 0.62 | 0.58 | 0.32 | 105 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.45 | 0.58 | â | 303 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.97 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.97 (50th percentile).