QSO B0839+187 | |
---|---|
Observation data ( Epoch J2000) | |
Constellation | Cancer |
Right ascension | 08h 42m 05.0942s |
Declination | +18° 35′ 40.991″ |
Redshift | 1.27 [1] [2] |
Distance | 8.4
billion
light-years ( Light travel time) [2] |
Type | Rad |
Apparent magnitude (V) | 16.36 |
Other designations | |
LEDA 2825583, PKS J0842+1835, PKS 0839+187, 2MASS J08420509+1835411, QSO B0839+1846 | |
See also: Quasar, List of quasars |
QSO B0839+187 (PKS 0839+187) is a quasar [1] that was used for a VLBI experiment conducted by Edward Fomalont and Sergei Kopeikin in September 2002. They claimed to measure the speed of gravity, but this is disputed. [3] [4] [5]