Also known as Caldwell 90, C 90
planetary nebula in the constellation of Carina
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NGC 2867 (also known as Caldwell 90) is an elliptical Type II planetary nebula in the southern constellation of Carina, just over a degree to the NNW of the star Iota Carinae. It was discovered by John Herschel on April 1, 1834. Herschel initially thought he might have found a new planet, but on the following night he checked again and discovered it had not moved. The nebula is located at a distance of 7,270 light-years from the Sun.
The central star of the nebula is of spectral type WC3 and is in the process of evolving into a white dwarf, having previously shed the atmosphere that created the surrounding nebula. It is now a hydrogen deficient GW Vir variable that is undergoing non-radial pulsations with an amplitude of less than 0.3 in magnitude. The star has an estimated temperature of 165+18 −20 kK with 5% of the radius of the Sun and is radiating 1,400 times the Sun's luminosity.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).