MXB 1658-298

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MXB 1658-298, also known as V2134 Ophiuchi, is a distant X-ray binary star system consisting of a pulsar and a K-type main sequence star about 32,615 light-years away in the constellation Ophiuchus. In 2017, a massive substellar companion about 23 times the mass of Jupiter was detected via eclipse timing variations, completing a single orbit around both stars once every 2.1 years

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