UBC 1481
0.28
UTI
0.26
CN
0.12
Cdens
0.75
CC3
0.13
Clit
1.0
Cdup
Nm (P>50%)
26
Core radius and density
2.7 [pc], 0.6 [pc-2]
- CN 0.26 Poorly populated
- Cdens 0.12 Very loose
- CC3 0.75 High quality
- Clit 0.13 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 1481 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a metal-poor, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (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 | 158.893 | -60.075 | 0.4 | -7.65 | 2.72 | -6.043 |
| Hu & Soubiran | 2025 | 158.914 | -60.064 | â | â | â | â |
| Hunt & Reffert | 2024 | 158.985 | -60.055 | 0.402 | -7.652 | 2.732 | -1.437 |
| Cavallo et al. | 2024 | 158.914 | -60.064 | 0.401 | â | â | â |
| Hunt & Reffert | 2023 | 158.985 | -60.055 | 0.402 | -7.652 | 2.732 | -1.437 |
| Castro-Ginard et al. | 2022 | 158.9 | -60.07 | 0.4 | -7.66 | 2.73 | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 2.26 | 0.27 | 0.98 | 113 | -0.685 | 260 | â | â |
| Liu et al. | 2025 | 2.63 | 0.17 | â | 56 | â | â | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.380(5) | â | â | â |
| Hunt & Reffert | 2024 | 2.26 | 0.27 | 0.98 | 113 | â | 260(1) | â | â |
| Cavallo et al. | 2024 | 1.59 | 0.55 | â | 646 | -0.990 | â | â | â |
| Hunt & Reffert | 2023 | 2.26 | 0.27 | 0.98 | 113 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 2.79 | 0.31 | â | 153 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 366 along with Theia_3409.
Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P579, along with Theia_3409.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).