As of 2026-10-12, HD 93129 tops the list with --9,223,372,036,854,775,808 kg.
- #1 HD 93129 — --9,223,372,036,854,775,808 kg
star in the constellation Carina
HD 93129 is a triple star system in the Carina Nebula, with all three components being hot O class stars amongst the most luminous stars in the Milky Way. It is the dominant member of the Trumpler 14 star cluster, a young star cluster within the Carina OB1 stellar association that harbors other super-luminous stars, like Eta Carinae and WR 25. Read more on Wikipedia.
Wikidata - #2 HD 150136 — --9,223,372,036,854,775,808 kg
binary star in the constellation Ara
HD 150136 is a multiple star system in the southern constellation of Ara, around 4,300 light years away. It is the brightest member of the faint open cluster NGC 6193, part of the Ara OB1 association. Read more on Wikipedia.
Wikidata - #3 HD 5980 — --9,223,372,036,854,775,808 kg
triple star system in the constellation Tucana
HD 5980 is a multiple star system on the outskirts of NGC 346 in the Small Magellanic Cloud (SMC) and is one of the brightest stars in the SMC. Read more on Wikipedia.
Wikidata - #4 MY Camelopardalis — --9,223,372,036,854,775,808 kg
star in the constellation Camelopardalis
MY Camelopardalis is a binary star system located in the Alicante 1 open cluster, some 13 kly (4.0 kpc) away in the constellation Camelopardalis. It is one of the most massive known binary star systems and a leading candidate for a massive star merger. MY Cam is the brightest star in Alicante 1. Read more on Wikipedia.
Wikidata - #5 Gaia BH3 — --9,223,372,036,854,775,808 kg
binary system in the constellation Aquila
Gaia BH3 is a binary system consisting of a metal-poor giant star with spectral type G and a stellar-mass black hole. Gaia BH3 is located 1926 light years away in the constellation of Aquila. Gaia BH3 is the first black hole discovered from preliminary Gaia DR4 astrometric data. Read more on Wikipedia.
Wikidata - #6 HD 159176 — --9,223,372,036,854,775,808 kg
star
HD 159176, also known as Boss 4444 and V1036 Scorpii, is a variable star about 2,800 light years from the Earth, in the constellation Scorpius. It is a 5th magnitude star, so it should be visible to the naked eye of an observer far from city lights. HD 159176 is the brightest star in the young open cluster NGC 6383. It is a binary star composed of two nearly identical O stars in a circular orbit. Read more on Wikipedia.
Wikidata - #7 HD 152408 — --9,223,372,036,854,775,808 kg
star
HD 152408, also known as WR 79a, is a Wolf-Rayet star located in the constellation Scorpius, close to the galactic plane. Its distance is around 1,800 parsecs away from the Earth. Read more on Wikipedia.
Wikidata - #8 Centaurus X-3 — --9,223,372,036,854,775,808 kg
binary star with an X-ray pulsar in the constellation Centaurus
Centaurus X-3 is an X-ray pulsar with a period of 4.84 seconds. It was the first X-ray pulsar to be discovered, and the third X-ray source to be discovered in the constellation Centaurus. The system consists of a neutron star orbiting a massive, O-type supergiant star dubbed Krzemiński's star after its discoverer, Wojciech Krzemiński. Matter is being accreted from the star onto the neutron star, resulting in X-ray emission. Read more on Wikipedia.
Wikidata - #9 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 - #10 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