Meaning Of The Word Proper motion
What's the definition of Proper motion? Find Proper motion meanings, definitions and more at the Real Dictionary online.
Proper motion Meaning
| Proper motion Definition |
|---|
What's The Definition Of Proper motion?
proper motion in American English
noun: the angular motion of a star relative to a suitably defined frame of reference, expressed in seconds of arc per year proper motion in British English noun: the very small continuous change in the direction of motion of a star relative to the sun. It is determined from its radial and tangential motion |
More Definitions
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
Definitions Of The Day
- In residence ‐ actually resident; appointed to work at, and usually…
- Overfast ‐ adjective: too fast
- Deathwatch beetle ‐ a beetle, Xestobium rufovillosum, whose woodboring…
- Back emission ‐ noun: the secondary emission of electrons from…
- Reinsurance ‐ noun: Reinsurance is insurance protection taken…
- Lubber line ‐ noun: a mark on a ship's compass that designates…
- Bats-wing coral-tree ‐ noun: a small tree, Erythrina verspertilio, of…
- Back-patting ‐ noun: an act or instance of offering praise or…
- Charter school ‐ an alternative school that is founded on a charter…
- Irish water spaniel ‐ any of a breed of spaniel with a liver-colored…