| parameterized post newtonian | PPN | 93 | 5 | 1.001319 | 0311020,0311021,etc |
| general theory of relativity | GR | 37 | 4 | 1.000296 | 0311020,0311039,etc |
| very long baseline interferometry | VLBI | 10 | 4 | 1.000044 | 0311020,0311021,etc |
| lunar laser ranging | LLR | 105 | 4 | 1.003239 | 0311020,0311021,etc |
| strong equivalence principle | SEP | 56 | 4 | 1.001687 | 0311020,0311021,etc |
| laser astrometric test of relativity | LATOR | 147 | 3 | 2.001402 | 0311020,0311039,etc |
| international space station | ISS | 47 | 3 | 2.000436 | 0311020,0311039,etc |
| cosmic microwave background | CMB | 11 | 3 | 1.000107 | 0311020,0311049,etc |
| friedmann robertson walker | FRW | 9 | 3 | 1.000277 | 0311045,0311050,etc |