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Take the following quiz to test your skills at identifying true and false asteroid signals.
The quiz will update automatically when submitted.

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Are the following True signatures?

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Question 1

Yes
No

Correct!Not quite.
This is a false signature. Notice how the same object has not moved in all three images. Also the object that is supposed to be moving is not moving in a straight line.

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Question 2

Yes
No

Correct!Not quite.
This is a false signature. There are three stars whose brightness is just above the surrounding image brightness. Astrometrica will detect this minor change and incorrectly identify a signature.

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Question 3

Yes
No

Correct!Not quite.
This is an asteroid! Several things to notice about this object are the following:
The graph follows a bell shaped curve in all three images,
The object is smooth edged (no sharp corners),
The object moves in a near straight line.
Make sure all of your asteroids meat these criteria!

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Question 4

Yes
No

Correct!Not quite.
This is a false signature. Notice how the object is not round, nor are the edges smooth. If either of these things are true then your object is probably not an asteroid.

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Question 5

Yes
No

Correct!Not quite.
This is a false signature. This is what is known as "saturation". It occurs when there is a very bright object in the image. If there is a bright star such as this then there will probably be a lot of these false signatures.

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Question 6

Yes
No

Correct!Not quite.
This is a false signature. Notice how the object is not round. This object is also not moving in a straight line.

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Question 7

Yes
No

Correct!Not quite.
This is an Asteroid! Another thing to notice about asteroids is that the brightness stays roughly the same. This measure can be seen in the value "V" on the Astrometrica information pop-up.

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Question 8

Yes
No

Correct!Not quite.
This is an Asteroid! Notice how it meets all of the above criteria. Keep in mind Asteroids do not have to appear as perfect circles.

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Question 9

Yes
No

Correct!Not quite.
This is a false signature. Notice how the object is not round, nor are the edges smooth. It is also not moving in a straight line.

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Question 10

Yes
No

Correct!Not quite.
This is an Asteroid! The odd thing with this asteroid is that it does not appear to be moving exactly straight. This is because the object is somewhat diffuse (the light is scattered) and so the calculated center of the object is shifting.

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