UBC 1103
0.42
UTI
0.75
CN
0.15
Cdens
1.0
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
103
Core radius and density
2.5 [pc], 0.8 [pc-2]
- CN 0.75 Rich
- Cdens 0.15 Very loose
- CC3 1.0 Very 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 1103 is a rich, very loose object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a 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 | 306.903 | 38.793 | 0.597 | -0.212 | -2.833 | -12.887 |
| Zhang et al. | 2024 | 306.923 | 38.866 | â | â | â | â |
| Hunt & Reffert | 2024 | 306.923 | 38.866 | 0.593 | -0.222 | -2.841 | 15.368 |
| Cavallo et al. | 2024 | 306.876 | 38.774 | 0.595 | â | â | â |
| Hunt & Reffert | 2023 | 306.923 | 38.866 | 0.593 | -0.222 | -2.841 | 15.368 |
| Castro-Ginard et al. | 2022 | 306.87 | 38.76 | 0.6 | -0.21 | -2.84 | 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 | 1.6 | 3.59 | 2.66 | 27 | 0.215 | 901 | â | â |
| Zhang et al. | 2024 | â | â | â | â | 0.121(1) | â | â | â |
| Hunt & Reffert | 2024 | 1.60 | 3.59 | 2.66 | 27 | â | 901(1) | â | â |
| Cavallo et al. | 2024 | 1.57 | 3.59 | â | 18 | 0.310 | â | â | â |
| Hunt & Reffert | 2023 | 1.60 | 3.59 | 2.66 | 27 | â | â | â | â |
| Castro-Ginard et al. | 2022 | 1.75 | 2.65 | â | 31 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Palma et al. (2025)
Part of multiple system G79, along with UBC_1105 and FSR_0224.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.30 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.30 (50th percentile).