HAT-P-41
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 49m 17.4398s |
| Declination | 04° 40′ 20.786″ |
| Apparent magnitude (V) | 11.36 |
| Characteristics | |
| HAT-P-41 | |
| Evolutionary stage | main sequence |
| Spectral type | F9V |
| HAT-P-41B | |
| Spectral type | K9-M0 |
| Astrometry | |
| Radial velocity (Rv) | 33.2±0.5 km/s |
| Proper motion (μ) | RA: −3.177 mas/yr Dec.: −6.570 mas/yr |
| Parallax (π) | 2.8477±0.0176 mas |
| Distance | 1,145 ± 7 ly (351 ± 2 pc) |
| Position (relative to HAT-P-41) | |
| Component | HAT-P-41B |
| Epoch of observation | 2013 |
| Angular distance | 3.619±0.005″ |
| Position angle | 184.1±0.2° |
| Projected separation | 1270 AU |
| Details | |
| Mass | 1.418±0.047 M☉ |
| Radius | 1.683+0.058 −0.036 R☉ |
| Temperature | 6390±100 K |
| Metallicity [Fe/H] | 0.21±0.10 dex |
| Rotational velocity (v sin i) | 19.60±0.50 km/s |
| Age | 2.2±0.4 Gyr |
| Other designations | |
| TYC 488-2442-1, GSC 00488-02442, 2MASS J19491743+0440207 | |
| HAT-P-41: Gaia DR2 4290415081653653632, Gaia DR3 4290415081653653632 | |
| HAT-P-41B: Gaia DR2 4290415081653653376, Gaia DR3 4290415081653653376 | |
| Database references | |
| SIMBAD | data |
| Hat-P-41b | |
HAT-P-41 is a binary star system. Its primary is a F-type main-sequence star. Its surface temperature is 6390±100 K. compared to the Sun, HAT-P-41 is enriched in heavy elements, with a metallicity Fe/H index of 0.21±0.10, but is much younger at an age of 2.2±0.4 billion years.
The candidate stellar companion was detected simultaneously with the planet discovery in 2012. A multiplicity survey in 2015 did confirm a dim stellar companion of later-K to early-M spectral class, with the probability of being a background star of 14%. By 2020, it was concluded the candidate companion star is probably gravitationally bound.