Definitions. The terms Unaccompanied minors, unaccompanied alien children, child migrants, child immigrants, unaccompanied migrant children, and juvenile immigrants are often used interchangeably and generally refer to immigrants who are under the age of 18 and are not under the care of a parent or legal guardian.
Regulus is 0.46 degree from the ecliptic, the closest of the bright stars, and is regularly occulted by the Moon. Occultations by the planets Mercury and Venus are possible but rare, as are occultations by asteroids. The last occultation of Regulus by a planet was on July 7, 1959, by Venus.
The radian is a unit of plane angle, equal to 180/Ï degrees, or about 57.2958 degrees. It is the standard unit of angular measurement in all areas of mathematics beyond the elementary level. The radian is represented by the symbol rad or, more rarely, by the superscript c (for circular measure). For example, an angle of 1.2 radians would be written as 1.2 rad or 1.2c (the second symbol can be mistaken for a degree: 1.2Â°). However, the radian is mathematically considered a pure number that needs no unit symbol, and in mathematical writing the symbol rad is almost always omitted.