The star is named after Elisabetta Caffau who was the lead scientist on the project that studied the star. The star should not exist, it is a metal poor star, one that consists mainly of hydrogen and helium. The star should contain a lithium, carbon and iron but there isn't anywhere near as much as scientists believe there should be for this type of star. It is believed to be one of the Oldest and Earliest Stars in the galaxy.
This star has been estimated to have been around for nearly 13 billion years, that's nearly as old as the universe itself at 13.8 billion years. the Sun in comparison is only about 5 billion years give or take. The first stars were giant stars which didn't live long and soon died out, exploding in supernovas which then provided the ingredients for the next generation of stars which this star is believed to be one. Time
The location of the star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For Caffau's Star, the location is 10h 29m 15.15 and 17° 29` 28 .
|Primary / Proper / Traditional Name||Caffau's Star|
|Constellation's Main Star||No|
|Multiple Star System||No / Unknown|
|Visual / Apparent Magnitude||16.92|
|Naked Eye Visible||Requires 8m Telescope - Magnitudes|
|Right Ascension (R.A.)||10h 29m 15.15|
|Declination (Dec.)||17° 29` 28|
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