The two orbital elements that determine the size and shape of a planetary orbit are: planet's equatorial diameter and rotation rate tilt of the planet's axis and orbital period planet's orbital eccentricity and semi-major axis planet's speed and inclination

planet's orbital eccentricity and semi-major axis

Explanation:

The eccentricity and the semi - major axis controls the size and  shape of the orbit of the planet  . The value for the semi major axis is equal to the half of largest diameter of the elliptical orbit .

The eccentricity controls the shape of elliptical orbit . It is the ratio of the center to the focus ( sun ) length and the semi - major axis length .

a maximum–minimum thermometer. the scales are fahrenheit on the inside of the u and celsius on the outside. the current temperature is 23 degrees celsius, the maximum recorded is 25, and the minimum is 15, both read from the base of the small markers in each arm of the u tube. the bulbs are hidden by a plastic housing.

six's thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. it is used to record the extremes of temperature at a location, for instance in meteorology and horticulture. it was invented by a british scientist james six, born in canterbury, in 1780; [1] the same basic design remains in use.

it is also commonly known as a maximum–minimum, minimum–maximum, maxima–minima or minima–maxima thermometer, of which it is the earliest practical design.

the thermometer indicates the current temperature, and the highest and lowest temperatures since last reset.