UPK 156
0.21
UTI
0.0
CN
0.16
Cdens
0.38
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
18.1 [arcmin]
- CN 0.0 Sparse
- Cdens 0.16 Very loose
- CC3 0.38 Low quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
UPK 156 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 poorly 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.
Close
Low extinction
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 328.404 | 51.805 | 1.06 | -0.328 | -1.899 | -18.175 |
| Hunt & Reffert | 2024 | 328.4 | 51.958 | 1.065 | -0.321 | -1.858 | -15.565 |
| Cavallo et al. | 2024 | 328.434 | 51.907 | 1.067 | â | â | â |
| Hunt & Reffert | 2023 | 328.4 | 51.958 | 1.065 | -0.321 | -1.858 | -15.565 |
| Sim et al. | 2019 | 328.463 | 51.865 | â | -0.32 | -1.91 | â |
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] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | â | â | â | â | â | 51* | â | â |
| Cavallo et al. | 2024 | 0.95 | 1.01 | â | 245 | 0.120 | â | â | â |
| Hunt & Reffert | 2023 | 0.90 | 0.81 | 0.32 | 195 | â | â | â | â |
| Sim et al. | 2019 | 0.90 | â | â | 79 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.