A certain star is 13.7 times dimmer than a star with apparent magnitude m = 3.9. What is the apparent magnitude of the dimmer star?
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A certain star is 13.7 times dimmer than a star with apparent magnitude m = 3.9. What is the apparent magnitude of the dimmer star?
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- Calculate the luminosity of the star with an apparent magnitude of 2. Given the Sun has an apparent magnitude of -26.57 and 3.9 × 1026 W luminosity.If a star has a parallax of 0.050 arc second, what is its distance in pc?A star with a trigonometric parallax of .02 arcseconds has a distance of O2.0 light years. 50 pc. 4 kpc. 20 pc. O need more information (magnitudes)
- f a star has a luminosity of 4*10^26 Watts and a brightness of 1.4*10^3W/m2, how far away is it?The a star system contains two stars, one with apparent magnitude m = 10.5 and the other with m = 10.9. What is the combined apparent magnitude of the two stars?Given a star has a absolute magnitude of 2.5 and an apparent magnitude of 10.0. With this data calculate the distance.