UBC 1566
0.58
UTI
0.64
CN
1.0
Cdens
0.75
CC3
0.25
Clit
1.0
Cdup
Stellar density (N50/rad)
24.9 [N/pc2]
- CN 0.64 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.25 Poorly studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
UBC 1566 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, extremely metal-poor, intermediate-age cluster, but with a large variance across recent sources for the distance parameter (see Parameters). It is poorly studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 266.8 | -30.291 | 0.361 | 0.454 | -1.298 | 41.201 |
| Hunt & Reffert | 2024 | 266.794 | -30.294 | 0.358 | 0.447 | -1.307 | 22.209 |
| Cavallo et al. | 2024 | 266.8 | -30.29 | 0.361 | â | â | â |
| Hunt & Reffert | 2023 | 266.794 | -30.294 | 0.358 | 0.447 | -1.307 | 22.209 |
| Castro-Ginard et al. | 2022 | 266.8 | -30.29 | 0.35 | 0.45 | -1.31 | -19.1 |
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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 3.38 | 3.95 | 2.4 | 141 | -2.610 | 1535 | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 1535(1) | â | â |
| Cavallo et al. | 2024 | 9.59 | 4.19 | â | 141 | -2.610 | â | â | â |
| Hunt & Reffert | 2023 | 2.51 | 3.95 | 2.40 | 223 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 3.38 | 3.49 | â | 126 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Classified as optical pair P498, along with HSC_2978.
Cavallo et al. (2024)
Gold sample.