Iota Cancri is a wide double star. It is located 181 ± 2 light-years from Earth. Light travels at 186,000 miles per second or 300,000 km per second. β Cnc is the brightest star in Cancer at magnitude 3.5. It lies 298 light-years away. Iota is in the north of the constellation and shines at 4.03 magnitudes. $\endgroup$ – john3103 Mar 21 '14 at 18:34 $\begingroup$ @john3103 Definitely, I think my estimate below is a good exercise in demonstrating how vast the volume we are talking about is. The Sun seen from a distance of 50 light years would be a magnitude 5.8 star, so it also would be a faint point of light barely visible with the naked eye. How to Use the Planet Chart. It is an orange-hued giant star about 290 light-years from Earth. A planet near the brighter star would see the fainter star shining as bright as the full Moon does in our sky. The flux of solar energy from the Sun, at Earth's position, is 1370 W/m^2. Multiply that by the cross-section (area of a disc of Earth's radius) to find out the total number of Watts intercepted by Earth. The Acubens system lies at a distance of about 175 light years from Earth, which means that light from the star takes 175 years to reach the Earth. Iota Cancri … Using the four buttons at the top, select either Distance from the Sun, Distance from the Earth, Size in the Sky, or Brightness to control how the planets are displayed. The star α Cnc (Acubens), which means "the … The two bright stars closest to the center of the constellation are Delta and Gamma Cancri. A star that is brighter than Alpha Cancri is Iota Cancri. Delta Cancri also makes it easy to find X Cancri, the reddest star in the sky. Finding Cancer - Northern Hemisphere. The two brighter components, called A and B, about 0.2 light-year farther from the Sun, revolve around each other with a period of about 80 years, while Proxima circles them with a period of 550,000 years. The chart shows the position of Cancer over most of the United States in mid-winter at 8 pm. The primary is a yellow-hued G-type bright giant star of magnitude 4.0,[13] located 330 ± 20 light-years from Earth. Iota Cancri Information: The stars are far apart from each other, some 2800 times the distance from the Earth to the Sun. Iota is in the north of the constellation and shines at 4.03 magnitudes. [8] It spent much of its stellar life as a B-type main sequence star before expanding and cooling to its current state as it spent its core hydrogen. Jupiter mass = 1.9 x10 27 kg. 1370 W/m^2 corresponds to a magnitude of -26.78 The two bright stars closest to the center of the constellation are Delta and Gamma Cancri. This is a map of every star within 50 light years visible with the naked eye from Earth. Delta is the second brightest in Cancer, at magnitude 3.94. Alpha Centauri, also called Rigil Kentaurus, triple star, the faintest component of which, Proxima Centauri, is the closest star to the Sun, about 4.2 light-years distant. = Astronomical Unit, the distance between the Earth and the Sun: 93 million miles or 150 million km Light year = The distance light travels in a year. Iota Cancri A two star system around 300 light years from Earth, the brightest of the two is a white giant while the other is a white main sequence star. A star that is brighter than Alpha Cancri is Iota Cancri. Known as Asellus Borealis "northern donkey", Gamma Cancri is a white-hued A-type subgiant of spectral type A1IV and magnitude 4.67, that is 35 times as luminous as of the Sun. A planet near the fainter star would see … Distance to a star is a hard figure to nail-down accurately, especially at the distances you're mentioning here. 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