This page summarises the information held within TEPCat for the transiting planetary system HAT-P-27. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011ApJ...734..109B | |
| Date of discovery paper | 2011 / 1 / 18 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 14 51 04.19 | h m s |
| Declination | +05 56 50.5 | d m s |
| Right ascension (decimal) | 222.76746 | degrees |
| Declination (decimal) | 5.94736 | degrees |
| V-band apparent magnitude | 12.16 | mag |
| K-band apparent magnitude | 10.11 | mag |
| Transit duration | 0.0705 ( 1.692 ) | day hour |
| Transit depth | 1.5 | % |
| Time of mid-transit | 2455186.01991 ± 0.00044 | HJD or BJD |
| Orbital period | 3.0395803 ± 0.0000015 | days |
| Reference for orbital ephemeris | 2015MNRAS.451.4060S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5316 ± 55 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.30 ± 0.03 | dex |
| Stellar mass | 0.945 ± 0.035 | Msun |
| Stellar radius | 0.898 +0.054 −0.039 | Rsun |
| Stellar logarithmic surface gravity | 4.51 ± 0.04 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.078 ± 0.047 | |
| Orbital semimajor axis | 0.0403 ± 0.0005 | AU |
| Planetary mass | 0.660 ± 0.033 ( 209 ± 10 ) | Mjup Mearth |
| Planetary radius | 1.038 +0.077 −0.058 ( 11.63 + 0.86 − 0.65 ) | Rjup Rearth |
| Planetary surface gravity | 15.1 ± 1.7 3.18 ± 0.05 | m/s2 log(cgs) |
| Planetary mean density | 0.59 ± 0.10 ( 0.78 ± 0.13 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1207 ± 41 | K |
| Reference of detailed study | 2011ApJ...734..109B |
| Reference | λ (degrees) |
|---|---|
| Brown et al. (2012) | 24.2 + 76.0 - 44.5 |
Page generated on 2025/03/24 John Southworth (Keele University, UK)