This page summarises the information held within TEPCat for the transiting planetary system HAT-P-28. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2011ApJ...733..116B | |
| Date of discovery paper | 2011 / 3 / 10 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 00 52 00.18 | h m s |
| Declination | +34 43 42.3 | d m s |
| Right ascension (decimal) | 13.00075 | degrees |
| Declination (decimal) | 34.72842 | degrees |
| V-band apparent magnitude | 13.03 | mag |
| K-band apparent magnitude | 11.10 | mag |
| Transit duration | 0.1341 ( 3.218 ) | day hour |
| Transit depth | 1.5 | % |
| Time of mid-transit | 2457713.934 ± 0.0005 | HJD or BJD |
| Orbital period | 3.2572124 ± 0.0000012 | days |
| Reference for orbital ephemeris | 2022ExA....53..547K |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5680 ± 90 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.12 ± 0.08 | dex |
| Stellar mass | 1.025 ± 0.047 | Msun |
| Stellar radius | 1.103 +0.091 −0.069 | Rsun |
| Stellar logarithmic surface gravity | 4.36 ± 0.06 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.051 ± 0.033 | |
| Orbital semimajor axis | 0.0434 ± 0.0007 | AU |
| Planetary mass | 0.626 ± 0.037 ( 198 ± 11 ) | Mjup Mearth |
| Planetary radius | 1.212 +0.113 −0.082 ( 13.59 + 1.27 − 0.92 ) | Rjup Rearth |
| Planetary surface gravity | 10.5 ± 1.5 3.02 ± 0.06 | m/s2 log(cgs) |
| Planetary mean density | 0.35 ± 0.07 ( 0.464 ± 0.093 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1384 ± 52 | K |
| Reference of detailed study | 2011ApJ...733..116B |
HAT-P-28 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/17 John Southworth (Keele University, UK)