Target Location

This is the HATP-10 target location.

Information about target image

This is the basic information about the target image, the date and the time that has taken this image.

Data

This table has time of night and the Relative Brightness of HATP-10.

Graphic:Relation Brightness-Time of night

This graphic shows the relation of the Relative Brightness and the time of Night (Arizona).

Transit Depth

The time axis does not show the time of night. It shows the hours before or after the predected center of the transit. Astronomers have made this prediction based on previous observations of this star.

How big?

To determine your planet’s size, first find the fraction of the star’s light blocked by the planet. You can find this from the relative brightness values for the baseline and dip in your light curve. Then, take the square root of this fraction. The result is the planet’s radius compared to the star’s radius.

Is the planet's orbit tilted?

This graphic shows that the orbit of HATP-10 is tilted because of the curve.

How close is my planet to its star?

There is a relationship between distance and transit time. The closer a planet is to its star, the faster it moves—and so the shorter its transit time. From Newton's or Kepler's laws, you can derive the connection between a planet's speed (v) and the radius (R) of its orbit. The result is R=K/v^2 where the constant k involves the mass of the star. Since the transit time (t) is approximately proportional to 1/v, you can use the following relationship R=K·t^2 where the radius of the orbit is proportional to the square of the transit duration. Planets of our own solar system obey this relationship. Assume that your star is similar in size and mass to our own sun. Then you can use the radius of orbit graph shown to find where your planet would lie if it were in our own solar system. First use the data you collected for your planet to estimate the transit time, in hours. Then read off the corresponding orbital radius form the graph shown.