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Bicentennial.
A period of 10 years is called a decade.
A period of 100 years is called a century.
A period of ten years is a decade.
That's called a millenium.
Pax Romana.
short period comets
long period comet
Short period comets have a period of less than 200 years Long period comets have a period of more than 200 years.
A comet with a period of 200 years or more.
A comet with a period of 200 years or more.
The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.The rule of Augustus began the Pax Romana.
Not more than 200 years - less than 200 years. As to the "why", that's because this is how "short-period" vs. "long-period" is defined. Any comet that takes less than 200 years for one revolution is defined as short-period.
200 years
A Period of ten years is called a decade.
A period of 75 years is called a "septuagenary."
The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.The almost 200 years of relative peace was called the Pax Romana.