| Atomic Mass | Mass Excess |
| 158.962919777119 amu | -34.54 MeV |
| Level energy (MeV) | Spin & parity | Half-life | Mode of decay | Branch ratio (%) | Decay energy (MeV) |
| Ground state | (1/2+) | 0.544 S 0.016 | A | 80 | 5.66 |
| Ground state | (1/2+) | 0.544 S 0.016 | EC | 20 | 8.3 |
| .064 | (11/2-) | 1.1 S 0.1 | A | 5.66 |
There is no gamma-rays or the intensities are so weak!