UPK 25
0.37
UTI
0.0
CN
0.14
Cdens
0.5
CC3
0.6
Clit
1.0
Cdup
Radius (P>50% members)
30.6 [arcmin]
- CN 0.0 Sparse
- Cdens 0.14 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.6 Moderately studied
- Cdup 1.0 Unique
Overview
UPK 25 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is moderately studied in the literature.
Close
Moderate 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 | 267.87 | -2.779 | 1.605 | -0.277 | 0.219 | -13.814 |
| Li et al. | 2025 | 267.878 | -2.779 | 1.584 | -0.346 | 0.218 | â |
| Almeida et al. | 2025 | 267.993 | -2.804 | â | â | â | â |
| Alfonso et al. | 2024 | 268.416 | -2.714 | 1.49 | 0.326 | 0.146 | â |
| Cavallo et al. | 2024 | 268.066 | -2.681 | 1.596 | â | â | â |
| Hunt & Reffert | 2023 | 268.274 | -2.725 | 1.596 | -0.279 | 0.183 | -18.921 |
| Dias et al. | 2021 | 267.993 | -2.804 | 1.553 | -0.306 | 0.183 | â |
| Cantat-Gaudin et al. | 2020 | 267.878 | -2.779 | 1.584 | -0.346 | 0.218 | â |
| Cantat-Gaudin & Anders | 2020 | 267.899 | -2.745 | 1.57 | -0.323 | 0.283 | â |
| Sim et al. | 2019 | 268.092 | -2.756 | â | -0.31 | 0.19 | 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 |
|---|---|---|---|---|---|---|---|---|---|
| Li et al. | 2025 | 0.56 | 1.73 | â | 592 | 0.029 | â | â | â |
| Almeida et al. | 2025 | 0.62 | 2.10 | â | 274 | â | 61 | â | â |
| Alfonso et al. | 2024 | 0.60 | 1.38 | â | 357 | 0.017 | â | â | â |
| Cavallo et al. | 2024 | 0.61 | 1.99 | â | 380 | 0.080 | â | â | â |
| Hunt & Reffert | 2023 | 0.59 | 1.76 | 0.86 | 473 | â | â | â | â |
| Tarricq et al. | 2022 | 0.59 | â | â | 355 | â | â | â | â |
| Dias et al. | 2021 | 0.62 | 2.10 | â | 274 | 0.017 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 0.60 | 1.38 | â | 355 | â | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 0.63 | â | â | â | â | â | â | â |
| Sim et al. | 2019 | 0.63 | â | â | 891 | â | â | â | â |
Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.