Asteroid Albedos & Consequences for Detection by NEA Survey Programs Contributed by
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Asteroid Albedos & Consequences for Detection by NEA Survey Programs Contributed by Eric B. Grosfils Pomona College
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Asteroid Albedos & Consequences for Detection by NEA Survey Programs Contributed by Eric B. Grosfils Pomona College. Astronomy: Sky Surveys. Great idea! But not so simple in practice… It’s a big solar system out there! - PowerPoint PPT Presentation
Transcript of Asteroid Albedos & Consequences for Detection by NEA Survey Programs Contributed by
Asteroid Albedos&
Consequences for Detectionby NEA Survey Programs
Contributed byEric B. Grosfils
Pomona College
Astronomy: Sky SurveysAstronomy: Sky Surveys
Great idea! But not so simple in practice…
• It’s a big solar system out there!
• Trade off between detection size limit and survey speed/effectiveness.
• Asteroids are dark… much like asteroid Eros (10 km x 30 km) shown here (it really is here, even if you cannot see it)
• with albedos of a few percent, think looking for lumps of coal set against the black vastness of space!
Eros’ Albedo:
5%
Astronomy: Sky SurveysAstronomy: Sky Surveys
10%
Astronomy: Sky SurveysAstronomy: Sky Surveys
20%
Astronomy: Sky SurveysAstronomy: Sky Surveys
30%
Astronomy: Sky SurveysAstronomy: Sky Surveys
40%
Astronomy: Sky SurveysAstronomy: Sky Surveys
50%
