UPK 88
(OCSN 297)
0.44
UTI
0.26
CN
0.31
Cdens
0.62
CC3
0.5
Clit
1.0
Cdup
Radius (P>50% members)
48.4 [arcmin]
- CN 0.26 Poorly populated
- Cdens 0.31 Loose
- CC3 0.62 Intermediate quality
- Clit 0.5 Moderately studied
- Cdup 1.0 Unique
Overview
UPK 88 is a poorly 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 near-solar metallicity, young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is moderately studied in the literature.
Very close
Low extinction
Near-solar metallicity
Young
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 309.494 | 21.469 | 3.415 | 10.192 | -5.353 | -0.862 |
| Li et al. | 2025 | 309.476 | 21.462 | 3.4 | 10.213 | -5.266 | â |
| Alfonso et al. | 2024 | 309.467 | 21.894 | 3.359 | 10.138 | -5.349 | â |
| Cavallo et al. | 2024 | 309.549 | 21.701 | 3.396 | â | â | â |
| Hunt & Reffert | 2023 | 309.317 | 20.43 | 3.405 | 10.15 | -5.335 | -4.421 |
| Qin et al. | 2023 | 309.76 | 21.5 | 3.36 | 10.24 | -5.37 | 1.16 |
| Cantat-Gaudin et al. | 2020 | 309.476 | 21.462 | 3.4 | 10.213 | -5.266 | â |
| Cantat-Gaudin & Anders | 2020 | 309.476 | 21.462 | 3.402 | 10.254 | -5.308 | â |
| Sim et al. | 2019 | 309.719 | 21.426 | â | 10.29 | -5.35 | 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 | 0.26 | 0.02 | â | 60 | -0.037 | â | â | â |
| Alfonso et al. | 2024 | 0.28 | 0.27 | â | 37 | 0.010 | â | â | â |
| Cavallo et al. | 2024 | 0.30 | 0.66 | â | 54 | 0.290 | â | â | â |
| Hunt & Reffert | 2023 | 0.29 | 0.25 | 0.80 | 73 | â | â | â | â |
| Qin et al. | 2023 | 0.44 | 0.93 | â | 631 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 0.28 | 0.27 | â | 42 | â | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 0.29 | â | â | â | â | â | â | â |
| Sim et al. | 2019 | 0.29 | â | â | 63 | â | â | â | â |
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.