Theia 2179
0.22
UTI
0.48
CN
0.11
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
48
Core radius and density
3.0 [pc], 0.5 [pc-2]
- CN 0.48 Poorly populated
- Cdens 0.11 Very loose
- CC3 0.38 Low 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 2179 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-rich, young cluster (see Parameters). It was recently reported 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 | 211.348 | -62.654 | 0.351 | -5.4 | -2.7 | -32.579 |
| Hunt & Reffert | 2024 | 211.436 | -62.647 | 0.359 | -5.364 | -2.691 | -40.465 |
| Cavallo et al. | 2024 | 211.382 | -62.658 | 0.359 | â | â | â |
| Hunt & Reffert | 2023 | 211.436 | -62.647 | 0.359 | -5.364 | -2.691 | -40.465 |
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 | 2.425 | 2.13 | 2.88 | 46 | 0.610 | 634 | â | â |
| Liu et al. | 2025 | 6.58 | 0.81 | â | 51 | â | â | â | â |
| Hunt & Reffert | 2024 | 2.41 | 2.13 | 2.88 | 40 | â | 634(1) | â | â |
| Cavallo et al. | 2024 | 2.44 | 2.20 | â | 89 | 0.610 | â | â | â |
| Hunt & Reffert | 2023 | 2.41 | 2.13 | 2.88 | 40 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 362 along with UBC_531.
Palma et al. (2025)
Classified as genetic pair P244, along with UBC_531.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.50 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.50 (50th percentile).