This page summarises the information held within TEPCat for the transiting planetary system HAT-P-54. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2015AJ....149..149B | |
| Date of discovery paper | 2014 / 4 / 18 | y / m / d |
| Data/telescope used for discovery | HAT | |
| Right ascension | 06 39 35.53 | h m s |
| Declination | +25 28 57.1 | d m s |
| Right ascension (decimal) | 99.89804 | degrees |
| Declination (decimal) | 25.48253 | degrees |
| V-band apparent magnitude | 13.51 | mag |
| K-band apparent magnitude | 10.33 | mag |
| Transit duration | 0.07488 ( 1.7971 ) | day hour |
| Transit depth | 2.7 | % |
| Time of mid-transit | 2460216.95257 ± 0.00022 | HJD or BJD |
| Orbital period | 3.79985363 ± 0.00000037 | days |
| Reference for orbital ephemeris | 2024JAVSO..52..137H |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 4390 ± 50 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.127 ± 0.080 | dex |
| Stellar mass | 0.645 ± 0.020 | Msun |
| Stellar radius | 0.617 ± 0.013 | Rsun |
| Stellar logarithmic surface gravity | 4.667 ± 0.012 | c.g.s. |
| Stellar mean density | ρsun g cm-3 | |
| Orbital eccentricity | 0.0 +0.074 −0.0 | |
| Orbital semimajor axis | 0.04117 ± 0.00043 | AU |
| Planetary mass | 0.760 ± 0.032 ( 241 ± 10 ) | Mjup Mearth |
| Planetary radius | 0.944 ± 0.028 ( 10.58 ± 0.31 ) | Rjup Rearth |
| Planetary surface gravity | 21.1 ± 1.3 3.32 ± 0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.842 ± 0.074 ( 1.117 ± 0.098 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 818 ± 12 | K |
| Reference of detailed study | 2015AJ....149..149B |
HAT-P-54 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2026/01/29 John Southworth (Keele University, UK)