As of 2026-10-12, P Puppis tops the list with --9,223,372,036,854,775,808 kg.
- #1 P Puppis — --9,223,372,036,854,775,808 kg
binary star system in the constellation Puppis
HD 63922 is a class B0III star in the constellation Puppis. Its apparent magnitude is 4.11 and it is approximately 1600 light years away based on parallax. Read more on Wikipedia.
Wikidata - #2 V838 Monocerotis — --9,223,372,036,854,775,808 kg
red supergiant
V838 Monocerotis is a cataclysmic binary star in the constellation Monoceros about 19,000 light years from the Sun. The previously unremarked star was observed in early 2002 experiencing a major outburst, and was one of the largest known stars for a short period following the outburst. Originally believed to be a typical nova eruption, it was then identified as the first of a new class of eruptive variables known as luminous red novae. The reason for the outburst is still uncertain, but is... Read more on Wikipedia.
Wikidata - #3 42 Orionis — --9,223,372,036,854,775,808 kg
star in the constellation of Orion
42 Orionis, also known as c Orionis or c Ori, is a triple star system in the constellation Orion. Its apparent magnitude is 4.59 and it is approximately 900 light years away based on parallax. Read more on Wikipedia.
Wikidata - #4 Adhara — --9,223,372,036,854,775,808 kg
star in the constellation Canis Major
Epsilon Canis Majoris is a binary star system and the second-brightest star in the constellation of Canis Major. Its name is a Bayer designation that is Latinised from ε Canis Majoris, and abbreviated Epsilon CMa or ε CMa. This is the 22nd-brightest star in the night sky with an apparent magnitude of 1.50. About 4.7 million years ago, it was the brightest star in the night sky, with an apparent magnitude of −3.99. Based upon parallax measurements obtained during the Hipparcos and the Gaia... Read more on Wikipedia.
Wikidata - #5 Nu Aquilae — --9,223,372,036,854,775,808 kg
star in the constellation Aquila
Nu Aquilae is a supergiant star in the constellation of Aquila that lies close to the celestial equator. Its name is a Bayer designation that is Latinized from ν Aquilae, and abbreviated Nu Aql or ν Aql. It has an apparent visual magnitude of 4.72 and so is faintly visible to the naked eye. Based upon an annual parallax shift of 0.8752 mas, it is believed to lie approximately 3,700 light-years from Earth. The variable star NU Aquilae has a similar-looking designation but is a separate and... Read more on Wikipedia.
Wikidata - #6 Lambda Pavonis — --9,223,372,036,854,775,808 kg
variable star in the constellation Pavo
λ Pavonis, Latinized as Lambda Pavonis, is a single, variable star in the southern constellation of Pavo. It is a blue-white hued star that is faintly visible to the naked eye with an apparent visual magnitude that fluctuates around 4.22. This object is located approximately 1,400 light years from the Sun, based upon parallax. It is a member of the Scorpius–Centaurus association. Read more on Wikipedia.
Wikidata - #7 Iota1 Scorpii — --9,223,372,036,854,775,808 kg
star in the constellation Scorpius
Iota1 Scorpii, Latinized from ι1 Scorpii, is a star in the southern constellation of Scorpius. With an apparent visual magnitude of 3.03, this star can be seen with the naked eye. Parallax measurements place it at a distance of roughly 1,930 light-years from Earth, with a 9% margin of error. At the estimated distance, the apparent magnitude is diminished by 0.66 magnitudes due to intervening gas and dust between Earth and the star. Read more on Wikipedia.
Wikidata - #8 Sigma Cassiopeiae — --9,223,372,036,854,775,808 kg
binary star system in the constellation Cassiopeia
Sigma Cassiopeiae is a binary star system in the northern constellation of Cassiopeia. Its name is a Bayer designation that is Latinized from σ Cassiopeiae, and abbreviated Sigma Cas or σ Cas. The pair have a combined apparent magnitude of +4.88, making it visible to the naked eye. Based on Parallax measurements, it is located at a distance of 1,200 to 1,400 light years from Earth. Read more on Wikipedia.
Wikidata - #9 AX Circini — --9,223,372,036,854,775,808 kg
star in the constellation Circinus
AX Circini is a binary star system in the southern constellation of Circinus. It has a nominal magnitude of 5.91, which is bright enough to be visible to the naked eye. Based upon an annual parallax shift of 1.7 mas, it is located roughly 1,900 light-years from the Earth. The system is moving closer with a heliocentric radial velocity of −21 km/s. Read more on Wikipedia.
Wikidata - #10 Theta Muscae — --9,223,372,036,854,775,808 kg
variable star in the constellation Musca
Theta Muscae is a multiple star system in the southern constellation Musca, containing a Wolf-Rayet star and two massive companions. With an apparent magnitude of 5.5, it is the second-brightest Wolf–Rayet star in the sky, although much of the visual brightness comes from the massive companions and it is not one of the closest of its type. Read more on Wikipedia.
Wikidata