UBC 104
0.52
UTI
0.72
CN
0.51
Cdens
1.0
CC3
0.19
Clit
1.0
Cdup
Nm (P>50%)
94
Core radius and density
1.4 [pc], 2.5 [pc-2]
- CN 0.72 Moderately populated
- Cdens 0.51 Moderately dense
- CC3 1.0 Very high quality
- Clit 0.19 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 104 is a moderately populated, moderately dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.
Note: This object shares a very small percentage of members with a later reported entry. 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 | 280.706 | -6.254 | 0.325 | 0.47 | -0.801 | 14.465 |
| Almeida et al. | 2025 | 280.702 | -6.251 | â | â | â | â |
| Hunt & Reffert | 2024 | 280.698 | -6.25 | 0.335 | 0.472 | -0.807 | -8.129 |
| Cavallo et al. | 2024 | 280.707 | -6.246 | 0.33 | â | â | â |
| Hunt & Reffert | 2023 | 280.698 | -6.25 | 0.335 | 0.472 | -0.807 | -8.129 |
| Dias et al. | 2021 | 280.702 | -6.251 | 0.301 | 0.472 | -0.808 | â |
| Cantat-Gaudin et al. | 2020 | 280.692 | -6.257 | 0.295 | 0.486 | -0.809 | â |
| Castro-Ginard et al. | 2020 | 280.69 | -6.263 | 0.289 | 0.487 | -0.8 | 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 | 2.66 | 1.75 | 1.55 | 247 | -0.362 | 951 | â | â |
| Almeida et al. | 2025 | 2.74 | 1.78 | â | 268 | â | 715 | â | â |
| Hunt & Reffert | 2024 | 2.66 | 1.65 | 1.55 | 247 | â | 1187(1) | â | â |
| Cavallo et al. | 2024 | 1.98 | 2.58 | â | 115 | -1.020 | â | â | â |
| Hunt & Reffert | 2023 | 2.66 | 1.65 | 1.55 | 247 | â | â | â | â |
| Dias et al. | 2021 | 2.74 | 1.78 | â | 268 | 0.295 | â | â | â |
| Cantat-Gaudin et al. | 2020 | 3.03 | 1.71 | â | 65 | â | â | â | â |
| Kounkel et al. | 2020 | 2.60 | 1.75 | â | 288 | 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 optical pair P591, along with UBC_1036.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit. Silver sample.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).