WD 1145+017 (also known as EPIC 201563164) is a white dwarf approximately 570 light-years (170 pc) from Earth in the constellation of Virgo. It is the first white dwarf to be observed with a transiting planetary-mass object orbiting it.
Cassiopeia is famous for its distinctive W shape, an asterism formed by five bright stars in the constellation.
Is WD 1145+017 b a planetesimal?
The supposed planetesimal, WD 1145+017 b, with a 4.5 hour orbit, is being ripped apart by the star and is a remnant of the former planetary system that the star hosted before becoming a white dwarf. It is the first observation of a planetary object being shredded by a white dwarf.
You should be wondering “What is the orbital period of WDWD 1145+017 b?”
WD 1145+017 b orbits its host star with an orbital period of 0.1875 days (4.5 hours) and an orbital radius of about 0.005 times that of Earth’s (750,000 km), twice the distance between the Moon and the Earth, while Mercury orbits the Sun at about 0.38 AU (57 million km).
What Constellation has seven or eight bright stars?
(b) Cassiopeia is another prominent constellation in the northern sky. It is visible during winter in the early part of the night. It looks like a distorted letter W or M. (c) The constellation Orion is has seven or eight bright stars. It is also called the Hunter.
What are constellations?
The group of stars which appears to form some recognisable shape or pattern is known as a constellation. About 88 constellations are known at present. Each constellation has been given a name signifying an animal, a human being or some other object which it appears to resemble. All the constellations appear to move in the sky from east to west.
Then, which constellation appears to revolve around the pole star in the sky?
Since the Pole Star remains fixed in the night sky, therefore, the Ursa Major constellation appears to revolve around the Pole Star in the night sky. Orion is also bright stars in Orion known as Hunter.
This begs the inquiry “What Constellation is Cassiopeia?”
Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive ‘ W ‘ shape, formed by five bright stars.