Theia 67
0.32
UTI
0.52
CN
0.32
Cdens
0.62
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
55
Core radius and density
2.1 [pc], 1.6 [pc-2]
- CN 0.52 Moderately populated
- Cdens 0.32 Loose
- CC3 0.62 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 67 is a moderately populated, loose object of intermediate C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 259.964 | -24.956 | 6.753 | -4.613 | -21.651 | -3.451 |
| Swiggum et al. | 2024 | 260.336 | -25.059 | 6.753 | -4.668 | -21.781 | -3.402 |
| Cavallo et al. | 2024 | 259.763 | -25.058 | 6.756 | â | â | â |
| Hunt & Reffert | 2023 | 260.336 | -25.059 | 6.753 | -4.668 | -21.781 | -3.663 |
| Kounkel & Covey | 2019 | 259.755 | -25.058 | 6.548 | â | â | 7.738 |
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 | 0.15 | 0.43 | 0.45 | 20 | 0.190 | 40 | â | â |
| Swiggum et al. | 2024 | 0.15 | â | â | 12 | â | 40 | â | â |
| Cavallo et al. | 2024 | 0.15 | 1.03 | â | 38 | 0.190 | â | â | â |
| Hunt & Reffert | 2023 | 0.14 | 0.27 | 0.45 | 12 | â | â | â | â |
| Kounkel & Covey | 2019 | 0.15 | 0.43 | â | 27 | â | â | â | â |
Palma et al. (2025)
Part of multiple system G176, along with HSC_2900, HSC_2963 and OCSN_99.
Cavallo et al. (2024)
Gold sample.
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).