Adjective Of or with respect to the stars (i.e., the fixed stars, not the sun or planets).
Neptune's sidereal period or true orbital period. 60,190.03[5] days 164.79 years
The sidereal day is the time it takes for a planet to rotate once. For Venus that's about 243 of our Earth days.
A complete rotation which takes up 1 day or 24 hours.
There are two main definitions of "day" for a planet:1) Sidereal day. That's the time taken to rotate once.2) Solar day. That's the time taken for the Sun to complete one apparent journeyaround the sky. Usually it's given as the "mean solar day", which is the average value.The solar day depends on the planet's orbital motion, as well as its rotation.Here are the details, with slight approximations:Mercury : sidereal day, 58.65 Earth dayssolar day, 175.94 Earth daysVenus: sidereal day, 243.02 Earth dayssolar day, 116.75 Earth daysEarth: sidereal day, 23.934 hourssolar day, 24.000 hoursMars: sidereal day, 24.623 hourssolar day, 24.660 hoursFor these planets both days are nearly the same length:Jupiter: 9.92 hoursSaturn: 10.66 hoursUranus: 17.24 hoursNeptune: 16.11 hours
It is the "sidereal day" or "sidereal period". The word "sidereal" means relating to the distant stars. That's because a planet's spin is measured with reference to the "fixed" or distant stars.
Sidereal is a term used to refer to the apparent motion of the stars. An example sentence is: The sidereal was fantastic.
The sidereal rotation period is 9.925 hours
1 more sidereal month than synodic month
A solar day is 24 hours whereas a sidereal day is 23 hours and 56 minutes
Sigh-deer-ee-al (stress on the second syllable).
A solar day is 24 hours whereas a sidereal day is 23 hours and 56 minutes
Sidereal
27.32 of them
A sidereal month is the time it takes the moon to complete one orbit of earth. A synodic month is longer than a sidereal month because it takes longer for the moon to go through it's phases
There are three syllables in the word "sidereal" (si-de-re-al).
0.3781 days.
The length of a Martian day is equal to 1.027491204 Earth days. The length of one sidereal Martian year is equal to 1.880791 sidereal Earth years.