UPK 127
0.49
UTI
0.8
CN
0.96
Cdens
0.75
CC3
0.13
Clit
0.88
Cdup
Nm (P>50%)
226
Core radius and density
3.5 [pc], 4.8 [pc-2]
- CN 0.8 Rich
- Cdens 0.96 Very dense
- CC3 0.75 High quality
- Clit 0.13 Rarely studied
- Cdup 0.88 Very likely 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 127 is a rich, very dense object of high C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is rarely studied in the literature.
Note: This is very likely a unique object, which shares a small percentage of members with at least one previously 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 | 313.258 | 44.397 | 1.223 | -1.284 | -3.137 | -18.915 |
| Zhang et al. | 2024 | 313.401 | 44.406 | â | â | â | â |
| Hunt & Reffert | 2024 | 313.401 | 44.406 | 1.221 | -1.293 | -3.072 | -14.824 |
| Cavallo et al. | 2024 | 313.255 | 44.431 | 1.218 | â | â | â |
| Hunt & Reffert | 2023 | 313.401 | 44.406 | 1.221 | -1.293 | -3.072 | -14.824 |
| He et al. | 2022 | 313.091 | 44.344 | 1.223 | -1.261 | -3.212 | â |
| Sim et al. | 2019 | 313.211 | 44.338 | â | -1.29 | -3.08 | 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 | 0.795 | 3.845 | 2.91 | 4 | 0.015 | 554 | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.081(1) | â | â | â |
| Hunt & Reffert | 2024 | 0.79 | 3.89 | 2.91 | 4 | â | 554(1) | â | â |
| Cavallo et al. | 2024 | 1.28 | 3.21 | â | 11 | 0.110 | â | â | â |
| Hunt & Reffert | 2023 | 0.79 | 3.89 | 2.91 | 4 | â | â | â | â |
| He et al. | 2022 | â | 3.80 | â | 2 | â | â | â | â |
| Sim et al. | 2019 | 0.80 | â | â | 2 | 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 G188, along with UPK_126 and HSC_662.
Cavallo et al. (2024)
Wood sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.18 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.18 (50th percentile).