UPK 606
(OCSN 318)
0.77
UTI
0.66
CN
1.0
Cdens
1.0
CC3
0.6
Clit
1.0
Cdup
Stellar density (N50/rad)
12.1 [N/pc2]
- CN 0.66 Moderately populated
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.6 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
UPK 606 is a moderately populated, very dense object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption 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 | 216.227 | -46.362 | 5.911 | -20.205 | -16.865 | 8.016 |
| Liu et al. | 2025 | 215.89 | -46.42 | 5.9 | -20.06 | -16.89 | 7.45 |
| Li et al. | 2025 | 216.12 | -46.39 | 5.877 | -20.156 | -16.704 | â |
| Almeida et al. | 2025 | 216.13 | -46.363 | â | â | â | â |
| Cavallo et al. | 2024 | 216.214 | -46.097 | 5.893 | â | â | â |
| Hunt & Reffert | 2023 | 215.891 | -46.424 | 5.898 | -20.06 | -16.891 | 7.448 |
| Qin et al. | 2023 | 216.03 | -46.44 | 5.89 | -20.03 | -16.83 | 6.48 |
| He et al. | 2022 | 216.025 | -46.292 | 5.915 | -20.229 | -16.923 | â |
| Dias et al. | 2021 | 216.13 | -46.363 | 5.882 | -20.147 | -16.551 | 10.435 |
| Cantat-Gaudin et al. | 2020 | 216.12 | -46.39 | 5.877 | -20.156 | -16.704 | â |
| Cantat-Gaudin & Anders | 2020 | 216.12 | -46.39 | 5.911 | -20.121 | -16.817 | â |
| Sim et al. | 2019 | 215.922 | -46.337 | â | -20.26 | -16.8 | 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 | 0.17 | 0.17 | 0.54 | 17 | -0.052 | 32 | â | â |
| Liu et al. | 2025 | 0.17 | 0.09 | â | 19 | â | â | â | â |
| Li et al. | 2025 | 0.16 | 0.21 | â | 22 | -0.062 | â | â | â |
| Almeida et al. | 2025 | 0.17 | 0.13 | â | 17 | â | 32 | â | â |
| Cavallo et al. | 2024 | 0.17 | 0.86 | â | 17 | 0.060 | â | â | â |
| Hunt & Reffert | 2023 | 0.17 | 0.34 | 0.54 | 10 | â | â | â | â |
| Qin et al. | 2023 | 0.18 | 0.22 | â | 13 | â | â | â | â |
| He et al. | 2022 | â | 0.05 | â | 14 | â | â | â | â |
| Dias et al. | 2021 | 0.17 | 0.13 | â | 17 | -0.052 | â | â | â |
| Cantat-Gaudin & Anders | 2020 | 0.17 | â | â | â | â | â | â | â |
| Sim et al. | 2019 | 0.17 | â | â | 13 | â | â | â | â |
Liu et al. (2025)
Classified as primordial binary cluster 240 along with HSC_2630, and as primordial binary cluster 241 along with HSC_2636, and as primordial binary cluster 398 along with HSC_2733, and of multiple system 70 along with HSC_2630, HSC_2636, HSC_2816, HSC_2733, OCSN_92 and OCSN_91.
Cavallo et al. (2024)
Gold sample.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit. Silver sample.
Hunt & Reffert (2024)
Classified as a moving group.