| 1. | During the 1976 close approach the asteroid reached about apparent magnitude 14.
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| 2. | During the 1989 passage Castalia peaked at an apparent magnitude of 12.
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| 3. | Its brightest star is Alpha Cephei with an apparent magnitude of 3.5.
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| 4. | Comet White Ortiz Bolelli in 1970 reached an apparent magnitude of 1.
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| 5. | Fireballs reaching apparent magnitude & minus; 14 or brighter are called bolides.
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| 6. | During the 2010 apparition the comet brightened to about apparent magnitude 8.
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| 7. | As of September 2014 the comet is around apparent magnitude 17.
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| 8. | Its apparent magnitude is 3.73 and it is located around away.
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| 9. | Astronomers use two different definitions of magnitude : apparent magnitude and absolute magnitude.
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| 10. | By 3 January 2014 the asteroid was becoming dimmer than apparent magnitude 20.
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