UPK 57
0.29
UTI
0.0
CN
0.31
Cdens
0.5
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
15.7 [arcmin]
- CN 0.0 Sparse
- Cdens 0.31 Loose
- CC3 0.5 Intermediate quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
UPK 57 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a close distance, below 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.
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 | 300.958 | 12.524 | 1.157 | -0.444 | -3.527 | -16.685 |
| Zhang et al. | 2024 | 300.914 | 12.642 | â | â | â | â |
| Hunt & Reffert | 2024 | 300.914 | 12.642 | 1.172 | -0.459 | -3.514 | -15.474 |
| Cavallo et al. | 2024 | 300.954 | 12.585 | 1.174 | â | â | â |
| Hunt & Reffert | 2023 | 300.914 | 12.642 | 1.172 | -0.459 | -3.514 | -15.474 |
| Sim et al. | 2019 | 300.941 | 12.432 | â | -0.45 | -3.56 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Zhang et al. | 2024 | â | â | â | â | -0.044* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 79* | â | â |
| Cavallo et al. | 2024 | 0.84 | 0.67 | â | 93 | -0.110 | â | â | â |
| Hunt & Reffert | 2023 | 0.81 | 0.16 | 0.60 | 543 | â | â | â | â |
| Sim et al. | 2019 | 0.82 | â | â | 562 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.