HD 177830

HD 177830

Starbox short
name=HD 177830
epoch=2000
constell=Lyra
ra=RA|19|05|20.7735
dec=DEC|+25|55|14.379
appmag_v=7.175
absmag_v=3.319
dist_ly=192.54
dist_pc=59.06
spectral=K0
names=BD+25°3719, Gliese 743.2, GSC 02126-01196, HIP 93746, SAO 86791
Simbad=HD+177830
ARICNS=4c01536

HD 177830 is a 7th magnitude star located approximately 190 light-years away in the constellation of Lyra. It is slightly more massive than our Sun, but cooler being a type K star. Therefore it is a subgiant clearly more evolved than the Sun. In visual light it is four times brighter than the Sun, but because of its distance, about 190 light years, it is not visible to the unaided eye. With binoculars it should be easily visible.

The star is known to have two extrasolar planets orbiting around it.

Planetary system

PlanetboxOrbit
exoplanet = b
mass = >1.43
period = 407.88 ± 0.78
semimajor = 1.22
eccentricity = 0.041 ± 0.027PlanetboxOrbit
exoplanet = c
mass = >0.186
period = 111.19 ± 0.19
semimajor = 0.514
eccentricity = 0.40 ± 0.14

See also

* List of stars with confirmed extrasolar planets

External links

*
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  • HD 177830 c — Planetbox begin name = HD 177830 c Planetbox star star = HD 177830 constell = Lyra RA=RA|19|05|20.7735 DEC=DEC|+25|55|14.379 dist ly=192.54 dist pc=59.06 class=K0Planetbox orbit semimajor = 0.514 semimajor gigameter = 76.9 periastron = 0.309… …   Wikipedia

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