This page summarises the information held within TEPCat for the transiting planetary system WASP-99. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2014MNRAS.440.1982H | |
| Date of discovery paper | 2013 / 10 / 22 | y / m / d |
| Data/telescope used for discovery | WASP | |
| Right ascension | 02 39 35.44 | h m s |
| Declination | −50 00 28.8 | d m s |
| Right ascension (decimal) | 39.89767 | degrees |
| Declination (decimal) | -50.00800 | degrees |
| V-band apparent magnitude | 9.48 | mag |
| K-band apparent magnitude | 8.09 | mag |
| Transit duration | 0.219 ( 5.26 ) | day hour |
| Transit depth | 0.5 | % |
| Time of mid-transit | 2458387.96013 ± 0.00027 | HJD or BJD |
| Orbital period | 5.7525842 ± 0.0000025 | days |
| Reference for orbital ephemeris | 2023ApJS..268....2S |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6150 ± 100 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.21 ± 0.15 | dex |
| Stellar mass | 1.48 ± 0.10 | Msun |
| Stellar radius | 1.76 +0.11 −0.06 | Rsun |
| Stellar logarithmic surface gravity | 4.12 +0.02 −0.04 | c.g.s. |
| Stellar mean density | 0.27 +0.02 −0.04 ( 0.381 +0.028 −0.056 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.02 −0.0 | |
| Orbital semimajor axis | 0.0717 ± 0.0016 | AU |
| Planetary mass | 2.78 ± 0.13 ( 883 ± 41 ) | Mjup Mearth |
| Planetary radius | 1.10 +0.08 −0.05 ( 12.33 + 0.90 − 0.56 ) | Rjup Rearth |
| Planetary surface gravity | 52.5 +3.8 −6.8 3.72 +0.03 −0.06 | m/s2 log(cgs) |
| Planetary mean density | 2.1 ± 0.3 ( 2.79 ± 0.40 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 1480 ± 40 | K |
| Reference of detailed study | 2014MNRAS.440.1982H |
WASP-99 does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/03/24 John Southworth (Keele University, UK)