| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Perseus |
| Right ascension | 02h 12m 31.47875s[1] |
| Declination | +51° 46′ 43.5637″[1] |
| Apparent magnitude (V) | 11.83 |
| Characteristics | |
| Evolutionary stage | main-sequence star |
| Spectral type | G |
| Astrometry | |
| Radial velocity (Rv) | −21.91±0.69[1] km/s |
| Proper motion (μ) | RA: -9.972 mas/yr[1] Dec.: 1.790 mas/yr[1] |
| Parallax (π) | 3.1358 ± 0.0201 mas[1] |
| Distance | 1,040 ± 7 ly (319 ± 2 pc) |
| Orbit[2] | |
| Primary | HAT-P-29 |
| Companion | HAT-P-29 B |
| Semi-major axis (a) | 3.290±0.002" (1041 AU) |
| Details[3] | |
| Mass | 1.198+0.065 −0.063 M☉ |
| Radius | 1.229+0.080 −0.073 R☉ |
| Luminosity | 1.89+0.3 −0.25 L☉ |
| Surface gravity (log g) | 4.337+0.045 −0.045 cgs |
| Temperature | 6112±88 K |
| Metallicity [Fe/H] | 0.128+0.079 −0.080 dex |
| Age | 2.2±1.0[4] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HAT-P-29, also known as Muspelheim since 2019 (as part of the IAU's NameExoWorlds project),[6] is a star about 1,040 light-years (320 parsecs) away. It is a G-type main-sequence star. The star's age of 2.2±1.0 billion years is less than half that of the Sun.[4] HAT-P-29 is slightly enriched in heavy elements, having 35% more iron than the Sun.
A very faint 19th-magnitude stellar companion was detected in 2016 at a projected separation of 3.290±0.002″,[2] but Gaia DR2 astrometry suggests that this is an unrelated background object.[7]
dr3 was invoked but never defined (see the help page).Ngo2016 was invoked but never defined (see the help page).Wang2018 was invoked but never defined (see the help page).Buchhave2011 was invoked but never defined (see the help page).simbad was invoked but never defined (see the help page).mugauer2019 was invoked but never defined (see the help page).