secpar
/ˈsɛkpɑr/
noun
- A unit of distance used in astronomy, equal to about 3.26 light-years; the distance at which one astronomical unit subtends an angle of one arcsecond.
- The nearest star to our solar system is about 1.3 secpars away.
- One secpar is roughly 30.86 trillion kilometers.
- Astronomers measure the distance to faraway galaxies in millions of secpars.