This page summarises the information held within TEPCat for the transiting planetary system HAT-P-55. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2015PASP..127..851J | |
| Date of discovery paper | 2015 / 6 / 12 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 17 37 05.52 | h m s |
| Declination | +25 43 52.3 | d m s |
| Right ascension (decimal) | 264.27300 | degrees |
| Declination (decimal) | 25.73119 | degrees |
| V-band apparent magnitude | 13.21 | mag |
| K-band apparent magnitude | 11.63 | mag |
| Transit duration | 0.1223 ( 2.935 ) | day hour |
| Transit depth | 1.8 | % |
| Time of mid-transit | 2456730.83468 ± 0.00027 | HJD or BJD |
| Orbital period | 3.5852467 ± 0.0000064 | days |
| Reference for orbital ephemeris | 2015PASP..127..851J |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5808 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.030 ± 0.080 | dex |
| Stellar mass | 1.013 ± 0.037 | Msun |
| Stellar radius | 1.011 ± 0.036 | Rsun |
| Stellar logarithmic surface gravity | 4.434 ± 0.032 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 +0.139 −0.0 | |
| Orbital semimajor axis | 0.04604 ± 0.00056 | AU |
| Planetary mass | 0.582 ± 0.056 ( 185 ± 17 ) | Mjup Mearth |
| Planetary radius | 1.182 ± 0.055 ( 13.25 ± 0.62 ) | Rjup Rearth |
| Planetary surface gravity | 10.3 ± 1.4 3.01 ± 0.06 | m/s2 log(cgs) |
| Planetary mean density | 0.328 ± 0.058 ( 0.435 ± 0.077 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1313 ± 26 | K |
| Reference of detailed study | 2015PASP..127..851J |
HAT-P-55 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2023/09/01 John Southworth (Keele University, UK)