Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Hercules |
Right ascension | 17h 52m 07.0184s[1] |
Declination | +37° 32′ 46.237″[1] |
Apparent magnitude (V) | 12.4 |
Characteristics | |
Spectral type | G |
Apparent magnitude (B) | 13.114 ±0.009[2] |
Apparent magnitude (V) | 12.402 ±0.006[2] |
Apparent magnitude (I) | 11.603000 ±0.010[2] |
Apparent magnitude (J) | 11.015 ±0.022[2] |
Apparent magnitude (H) | 10.655000 ±0.030[2] |
Apparent magnitude (K) | 10.608000 ±0.028[2] |
Variable type | planetary transits[2][3] |
Astrometry | |
Proper motion (μ) | RA: −24.462(10) mas/yr[1] Dec.: 34.772(11) mas/yr[1] |
Parallax (π) | 4.3106 ± 0.0091 mas[1] |
Distance | 757 ± 2 ly (232.0 ± 0.5 pc) |
Absolute magnitude (MV) | 5.39±0.11[4] |
Details | |
Mass | 0.928+0.028 −0.048[4] M☉ |
Radius | 0.826±0.012[5] R☉ |
Luminosity | 0.625+0.066 −0.058[4] L☉ |
Surface gravity (log g) | 4.57±0.01[5] cgs |
Temperature | 5650±75[4] K |
Metallicity [Fe/H] | −0.19±0.08[4] dex |
Rotational velocity (v sin i) | 1.5±1.0 km/s |
Age | 0.9+2.8 −0.8[4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
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.[2] This star is identified in SIMBAD as a variable star per the 1SWASP survey.[6]
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.[7][8]
In 2007 the TrES program found exoplanet TrES-3b, later named Umbäässa, orbiting this star by using the transit method.[9]
The transit timing variation analysis did not reveal any additional planets in the system as of 2020,[10] and the physical mechanism underlying transit timing variations remains unexplained as in 2022.[11]
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 |