Final answer:
In the context of a satellite of mass 1250 kg being placed in Earth's orbit, 'Earth's orbit' refers to the path a satellite follows around Earth where gravity maintains its motion, and it implies various orbital types like LEO or GEO.
Step-by-step explanation:
When we refer to a satellite of mass placed in Earth's orbit with a mention of 'Earth's orbit,' we typically mean that the satellite is in a path around Earth where the force of gravity keeps it in motion without it falling into the atmosphere or escaping into space. The term 'Earth's orbit' can refer to different types of orbits, such as low Earth orbit (LEO), geostationary orbit (GEO), and geosynchronous orbit, each with its own characteristics and uses, such as weather observation, communication, or scientific research.
The mass of the satellite does not affect the period of the orbit as long as it is much smaller compared to Earth's mass. Thus, all satellites at a particular altitude will have the same orbital period regardless of their mass.
A geosynchronous orbit specifically refers to an orbit with a period of 1 day, matching Earth’s rotation period, so the satellite hovers over the same point on Earth's equator. This type of orbit is at an altitude of approximately 42,250.0 km.