HD 17156 [SEP] constellation
HD 17156
HD 17156 is a yellow subgiant star approximately 255 light-years away in the constellation of Cassiopeia. The apparent magnitude is 8.17, which means it is not visible to the naked eye but can be seen with good binoculars. A search for a binary companion star using adaptive optics at the MMT Observatory was negative.
The star is more massive and larger than our Sun while Its absolute magnitude of 3.70 and spectral type of G0, show that it is both hotter and more luminous. Based on asteroseismic density
HD 170469
HD 170469 is a yellow subgiant star located approximately 212 light-years away in the constellation Ophiuchus. It has apparent magnitude +8.21 and it is 211.91 ly away.
In 2007, a planet was discovered by the N2K Consortium, led by principal investigators Debra Fischer and Gregory P. Laughlin.
See also.
- HD 125612
- HD 231701
- HD 17156
- HD 11506
- List of extrasolar planets