GSC 03089-00929
GSC 03089-00929 is a magnitude 12 star located approximately 757 light-years away in the constellation of Hercules. This star is a G type main sequence star that is similar to but slightly cooler than the Sun.
This star is identified in SIMBAD as a variable star per the 1SWASP survey.
The star GSC 03089-00929 is named Pipoltr. The name was selected in the NameExoWorlds campaign by Liechtenstein, during the 100th anniversary of the IAU. In the local dialect of Triesenberg, Pipoltr is a bright and visible butterfly.
Planetary system
In 2007 the TrES program found exoplanet TrES-3b, later named Umbäässa, orbiting this star by using the transit method.
The transit timing variation analysis did not reveal any additional planets in the system as of 2020, and the physical mechanism underlying transit timing variations remains unexplained as in 2022.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| TrES-3b / Umbäässa | 1.910+0.075 −0.080 MJ |
0.02282+0.00023 −0.00040 |
1.30618652(4) | 0 (fixed) | 81.89±0.12° | 1.381±0.033 RJ |