UBC 375
0.41
UTI
0.48
CN
0.49
Cdens
0.75
CC3
0.16
Clit
1.0
Cdup
Nm (P>50%)
48
Core radius and density
1.2 [pc], 2.5 [pc-2]
- CN 0.48 Poorly populated
- Cdens 0.49 Loose
- CC3 0.75 High quality
- Clit 0.16 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 375 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-rich, very young cluster, but with a large variance across recent sources for the distance parameter (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 304.638 | 40.045 | 0.568 | -3.456 | -5.208 | 46.38 |
| Hunt & Reffert | 2024 | 304.678 | 40.049 | 0.567 | -3.436 | -5.23 | -41.852 |
| Cavallo et al. | 2024 | 304.698 | 40.037 | 0.571 | â | â | â |
| Hunt & Reffert | 2023 | 304.678 | 40.049 | 0.567 | -3.436 | -5.23 | -41.852 |
| Cantat-Gaudin et al. | 2020 | 304.574 | 40.063 | 0.558 | -3.422 | -5.224 | â |
| Castro-Ginard et al. | 2020 | 304.578 | 40.088 | 0.56 | -3.437 | -5.216 | 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 | 1.715 | 3.59 | 2.54 | 14 | 0.780 | 745 | â | â |
| Liu et al. | 2025 | 6.95 | 1.31 | â | 13 | â | â | â | â |
| Hunt & Reffert | 2024 | 1.66 | 3.89 | 2.54 | 11 | â | 745(1) | â | â |
| Cavallo et al. | 2024 | 1.87 | 3.65 | â | 21 | 0.780 | â | â | â |
| Hunt & Reffert | 2023 | 1.66 | 3.89 | 2.54 | 11 | â | â | â | â |
| Cantat-Gaudin et al. | 2020 | 1.64 | 2.56 | â | 107 | â | â | â | â |
| Kounkel et al. | 2020 | 1.77 | 3.53 | â | 14 | 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 379 along with vdBergh_130.
Palma et al. (2025)
Part of multiple system G256, along with vdBergh_130, Theia_286, FSR_0219, NGC_6910 and UBC_584.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).