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HD 3765
HD 3765 is a single K-type main-sequence star in the constellation of Andromeda, near the Andromeda Galaxy in the sky. Its surface temperature is about 5076 K. HD 3765 has an orange hue and is too faint to be seen with the naked eye, but can be seen with a small telescope. It has an apparent visual magnitude of 7.34. Based upon parallax measurements, it is located 58.4 light-years from the Sun. The object is drifting towards the Sun with a radial velocity of −63.3 km/s.
HD 3765 has one known exoplanet, discovered in 2021 by the radial velocity method. Prior to this discovery, it had been used as a radial velocity standard star. The planet, HD 3765 b, orbits with a period of 3.3 years at a distance of 2.1 AU, and is not in the habitable zone. It is a gas giant with a minimum mass of 0.173 Jupiter masses, and a predicted radius 0.764 times that of Jupiter.
During observations of the variable star EG Andromedae in 1971, a possible eclipse of HD 3765 (which was used as a comparison star) was observed. It was proposed that this might be due to a transiting planet the size of Jupiter. The presence of eclipses has not been confirmed, and the observation could have been due to intrinsic variability, or in error.
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HD 3765
HD 3765 is a single K-type main-sequence star in the constellation of Andromeda, near the Andromeda Galaxy in the sky. Its surface temperature is about 5076 K. HD 3765 has an orange hue and is too faint to be seen with the naked eye, but can be seen with a small telescope. It has an apparent visual magnitude of 7.34. Based upon parallax measurements, it is located 58.4 light-years from the Sun. The object is drifting towards the Sun with a radial velocity of −63.3 km/s.
HD 3765 has one known exoplanet, discovered in 2021 by the radial velocity method. Prior to this discovery, it had been used as a radial velocity standard star. The planet, HD 3765 b, orbits with a period of 3.3 years at a distance of 2.1 AU, and is not in the habitable zone. It is a gas giant with a minimum mass of 0.173 Jupiter masses, and a predicted radius 0.764 times that of Jupiter.
During observations of the variable star EG Andromedae in 1971, a possible eclipse of HD 3765 (which was used as a comparison star) was observed. It was proposed that this might be due to a transiting planet the size of Jupiter. The presence of eclipses has not been confirmed, and the observation could have been due to intrinsic variability, or in error.