| Atomic Mass | Mass Excess |
| 155.959205313565 amu | -38.0 MeV |
| Level energy (MeV) | Spin & parity | Half-life | Mode of decay | Branch ratio (%) | Decay energy (MeV) |
| Ground state | 0+ | 23 MS 1 | A | 100 | 6.033 |
| Ground state | 444 US 17 | A | 6.033 | ||
| Ground state | 8+ | 0.52 MS 0.01 | A | 6.033 |
There is no gamma-rays or the intensities are so weak!