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Gillipsee
How do you determine angular size from an object such as an asteroid? I tried searching the web but there were no real answers out there.
Help Anyone?
Help Anyone?
Welcome to Physics Forums Gillipsee!Gillipsee said:How do you determine angular size from an object such as an asteroid? I tried searching the web but there were no real answers out there.
Help Anyone?
[tex]AngularSize = (Diameter / (\pi Distance)) * 180[/tex]Gillipsee said:How do you determine angular size from an object such as an asteroid? I tried searching the web but there were no real answers out there.
Help Anyone?
To determine the angular size of an object, you will need to measure the object's apparent diameter and its distance from your observation point. Then, use the formula: angular size = 2 x arctan (object's apparent diameter / object's distance). The result will be in radians, so you may need to convert it to degrees for easier understanding.
Yes, it is crucial to consider the object's distance when determining its dimensions. The farther the object is from your observation point, the smaller its angular size will appear. This is because the object's apparent diameter decreases as the distance increases.
Angular size refers to the size of an object as it appears from a certain observation point, taking into account the object's distance. Actual size, on the other hand, refers to the physical size of the object itself. Angular size is measured in angles, while actual size is measured in units of length, such as meters or inches.
Yes, the same method can be used to determine the angular size of all objects. However, keep in mind that the formula may vary depending on the shape of the object. For example, for a circular object, the formula mentioned in the first question can be used, while for a rectangular object, you may need to use a different formula.
Yes, there are various tools and software available that can assist in determining angular size. These include angle-measuring devices, such as protractors and clinometers, as well as astronomy software that can calculate angular size based on the object's coordinates and distance. However, it is always beneficial to understand the formula and process for determining angular size manually.