UBC 1557
0.54
UTI
0.46
CN
1.0
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Radius (P>50% members)
2.1 [arcmin]
- CN 0.46 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
Overview
UBC 1557 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Relatively close
Moderate 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 | 251.042 | -45.53 | 0.388 | -1.37 | -2.53 | -31.39 |
| Hunt & Reffert | 2024 | 251.05 | -45.525 | 0.391 | -1.358 | -2.545 | -12.95 |
| Cavallo et al. | 2024 | 251.032 | -45.538 | 0.391 | â | â | â |
| Hunt & Reffert | 2023 | 251.05 | -45.525 | 0.391 | -1.358 | -2.545 | -12.95 |
| Castro-Ginard et al. | 2022 | 251.04 | -45.53 | 0.39 | -1.37 | -2.54 | 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 | 919* | â | â |
| Cavallo et al. | 2024 | 1.73 | 3.29 | â | 59 | -0.340 | â | â | â |
| Hunt & Reffert | 2023 | 2.31 | 2.90 | 1.44 | 69 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 2.59 | 2.62 | â | 28 | â | â | â | â |
(*): Indicates that this parameter is assigned more than one value in the corresponding reference.
Cavallo et al. (2024)
Gold sample.