Absolute magnitude from an absolute magnitude in a specific filter band to absolute bolometric magnitude, a bolometric correction is applied. For Solar System bodies that shine in reflected light, a different definition of absolute magnitude (H) is used, based on a standard reference distance of one astronomical unit. In stellar and galactic astronomy, the standard distance is 10 parsecs (about 32.616 light-years, 308.57 petameters or 308.57 trillion kilometres). A star at 10 parsecs has a parallax of 0.1″ (100 milliarcseconds). Galaxies (and other extended objects) are much larger than 10 parsecs, their light is radiated over an extended patch of sky, and
1, 2, 3, Red Light (song) 1, 2, 3, Red Light (song) "1, 2, 3, Red Light" is a song written by Sal Trimachi and Bobbi Trimachi and was recorded by 1910 Fruitgum Company for their 1968 album, "1, 2, 3, Red Light". The song charted highest in Canada, going to number 1 on the "RPM 100" national singles chart in 1968. In the same year in the US, it went to number 5 on the "Billboard" Hot 100 and was on the charts for 13 weeks. The song went to number 2 in South Africa, number 3 on the New Zealand charts, and in Australia