HD 46375 b explained

HD 46375 b
Discoverer:California and
Carnegie Planet Search
Discovery Site:W. M. Keck Observatory
Discovered:March 29, 2000
Apsis:astron
Aphelion:0.0423AU
Perihelion:0.0373AU
Semimajor:0.0398±
Eccentricity:0.063±0.026
Period:3.023573±0.000065 d
0.008277947 y
Avg Speed:144
Time Periastron:2,451,071.53±0.19
Arg Peri:114±24
Semi-Amplitude:33.65±0.74
Mean Radius:[1]

HD 46375 b is an extrasolar planet located approximately 109 light-years away in the constellation of Monoceros, orbiting the star HD 46375. With 79 Ceti b on March 29, 2000, it was joint first known extrasolar planet less massive than Saturn orbiting a normal star. The planet is a "hot Jupiter", a type of planet that orbits very close to its parent star. In this case the orbital distance is only a tenth that of the planet Mercury. No transit of the planet has been detected, so its inclination must be less than 83°. Because the inclination is unknown, the true mass of the planet is not known.

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Notes and References

  1. HD 46375 A b. 4.