UBC 444
0.69
UTI
0.68
CN
1.0
Cdens
0.75
CC3
0.5
Clit
1.0
Cdup
Stellar density (N50/rad)
9.5 [N/pc2]
- CN 0.68 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 0.5 Moderately 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 444 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is moderately studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 105.308 | -6.837 | 0.904 | -1.468 | -2.444 | 18.532 |
| Li et al. | 2025 | 105.311 | -6.837 | 0.915 | -1.506 | -2.49 | â |
| Hunt & Reffert | 2024 | 105.305 | -6.852 | 0.887 | -1.474 | -2.443 | 19.153 |
| Cavallo et al. | 2024 | 105.317 | -6.848 | 0.889 | â | â | â |
| Hunt & Reffert | 2023 | 105.305 | -6.852 | 0.887 | -1.474 | -2.443 | 19.153 |
| He et al. | 2022 | 105.326 | -6.848 | 0.897 | -1.489 | -2.441 | â |
| Tarricq et al. | 2022 | 105.314 | -6.839 | 0.917 | -1.488 | -2.447 | â |
| Cantat-Gaudin et al. | 2020 | 105.311 | -6.837 | 0.915 | -1.506 | -2.49 | â |
| Castro-Ginard et al. | 2020 | 105.31 | -6.828 | 0.913 | -1.505 | -2.492 | 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 | 1.075 | 0.415 | 0.82 | 436 | 0.105 | 221 | â | â |
| Liu et al. | 2025 | 1.53 | 0.25 | â | 251 | â | â | â | â |
| Li et al. | 2025 | 1.07 | 0.56 | â | 436 | 0.040 | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 221(1) | â | â |
| Cavallo et al. | 2024 | 1.08 | 0.49 | â | 309 | 0.170 | â | â | â |
| Hunt & Reffert | 2023 | 1.04 | 0.34 | 0.82 | 462 | â | â | â | â |
| He et al. | 2022 | â | 0.80 | â | 56 | â | â | â | â |
| Tarricq et al. | 2022 | 1.06 | â | â | 501 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.09 | 0.30 | â | 490 | 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 tidal capture (resonant trapping binary) 39 along with CMa_2.
Palma et al. (2025)
Part of multiple system G11, along with Theia_2649, CMa_2 and ASCC_30.
Cavallo et al. (2024)
Gold sample.