UBC 1553
0.45
UTI
0.42
CN
0.47
Cdens
0.75
CC3
0.31
Clit
1.0
Cdup
Radius (P>50% members)
4.2 [arcmin]
- CN 0.42 Poorly populated
- Cdens 0.47 Loose
- CC3 0.75 High quality
- Clit 0.31 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 1553 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly studied in the literature.
Distant
High extinction
Massive
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 | 248.888 | -45.646 | 0.289 | -1.843 | -2.299 | -64.945 |
| Hu & Soubiran | 2025 | 248.882 | -45.65 | â | â | â | â |
| Hunt & Reffert | 2024 | 248.882 | -45.646 | 0.272 | -1.85 | -2.322 | -65.899 |
| Cavallo et al. | 2024 | 248.882 | -45.65 | 0.273 | â | â | â |
| Hunt & Reffert | 2023 | 248.882 | -45.646 | 0.272 | -1.85 | -2.322 | -65.899 |
| Castro-Ginard et al. | 2022 | 248.87 | -45.64 | 0.27 | -1.84 | -2.3 | -78.25 |
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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | â | â | â | â | -0.090* | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1200* | â | â |
| Cavallo et al. | 2024 | 2.33 | 3.40 | â | 589 | -0.230 | â | â | â |
| Hunt & Reffert | 2023 | 3.40 | 3.77 | 2.24 | 121 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 3.89 | 2.33 | â | 759 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.