UBC 1439
0.26
UTI
0.3
CN
0.04
Cdens
0.75
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
30
Core radius and density
6.1 [pc], 0.2 [pc-2]
- CN 0.3 Poorly populated
- Cdens 0.04 Very loose
- CC3 0.75 High quality
- Clit 0.1 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 1439 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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 | 126.28 | -43.605 | 0.257 | -3.3 | 4.105 | 62.024 |
| Hu & Soubiran | 2025 | 126.282 | -43.624 | â | â | â | â |
| Hunt & Reffert | 2024 | 126.223 | -43.644 | 0.262 | -3.294 | 4.095 | 62.85 |
| Cavallo et al. | 2024 | 126.282 | -43.624 | 0.262 | â | â | â |
| Hunt & Reffert | 2023 | 126.223 | -43.644 | 0.262 | -3.294 | 4.095 | 62.85 |
| Castro-Ginard et al. | 2022 | 126.3 | -43.62 | 0.26 | -3.3 | 4.11 | 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 | 3.715 | 2.77 | 2.01 | 815 | -0.335 | 777 | â | â |
| Hu & Soubiran | 2025 | â | â | â | â | -0.290(5) | â | â | â |
| Hunt & Reffert | 2024 | 3.54 | 2.77 | 2.01 | 895 | â | 777(1) | â | â |
| Cavallo et al. | 2024 | 3.89 | 3.37 | â | 692 | -0.380 | â | â | â |
| Hunt & Reffert | 2023 | 3.54 | 2.77 | 2.01 | 895 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 4.31 | 2.64 | â | 735 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.35 (50th percentile), true positive? (human-assigned).
Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.35 (50th percentile), true positive? (human-assigned).