UBC 1143
0.38
UTI
0.75
CN
0.28
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
113
Core radius and density
2.0 [pc], 1.4 [pc-2]
- CN 0.75 Rich
- Cdens 0.28 Loose
- CC3 0.75 High quality
- Clit 0.06 Rarely 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 1143 is a rich, loose 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 massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 324.687 | 52.255 | 0.213 | -3.438 | -3.52 | -45.678 |
| Hunt & Reffert | 2024 | 324.704 | 52.256 | 0.207 | -3.428 | -3.519 | -47.419 |
| Cavallo et al. | 2024 | 324.691 | 52.257 | 0.209 | â | â | â |
| Hunt & Reffert | 2023 | 324.704 | 52.256 | 0.207 | -3.428 | -3.519 | -47.419 |
| Castro-Ginard et al. | 2022 | 324.7 | 52.25 | 0.21 | -3.43 | -3.53 | -65.42 |
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 | 4.21 | 2.735 | 2.54 | 120 | 0.380 | 1520 | â | â |
| Hunt & Reffert | 2024 | 4.21 | 2.86 | 2.54 | 120 | â | 1520(1) | â | â |
| Cavallo et al. | 2024 | 3.89 | 2.61 | â | 324 | 0.380 | â | â | â |
| Hunt & Reffert | 2023 | 4.21 | 2.86 | 2.54 | 121 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 4.49 | 2.13 | â | 69 | 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 tidal capture (resonant trapping pair) P71, along with FSR_0316.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.90 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.90 (50th percentile).