This page summarises the information held within TEPCat for the transiting planetary system K2-290b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2019MNRAS.484.3522H | |
| Date of discovery paper | 2019 / 1 / 15 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 15 39 25.87 | h m s |
| Declination | −20 11 55.7 | d m s |
| Right ascension (decimal) | 234.85779 | degrees |
| Declination (decimal) | -20.19881 | degrees |
| V-band apparent magnitude | 11.11 | mag |
| K-band apparent magnitude | 9.42 | mag |
| Transit duration | 0.207 ( 4.97 ) | day hour |
| Transit depth | 0.04 | % |
| Time of mid-transit | 2457994.7721 ± 0.0015 | HJD or BJD |
| Orbital period | 9.2117 ± 0.0002 | days |
| Reference for orbital ephemeris | 2021PNAS..11820174H |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6302 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | −0.06 ± 0.10 | dex |
| Stellar mass | 1.194 +0.067 −0.077 | Msun |
| Stellar radius | 1.511 +0.075 −0.072 | Rsun |
| Stellar logarithmic surface gravity | 4.23 ± 0.10 | c.g.s. |
| Stellar mean density | 0.344 +0.052 −0.045 ( 0.485 +0.073 −0.063 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 | |
| Orbital semimajor axis | 0.0923 ± 0.0066 | AU |
| Planetary mass | 0.0 +0.0664 −0.0 ( 0 +21 −0 ) | Mjup Mearth |
| Planetary radius | 0.273 ± 0.014 ( 3.06 ± 0.16 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | 1230 ± 38 | K |
| Reference of detailed study | 2021PNAS..11820174H |
| Reference | λ (degrees) |
|---|---|
| Hjorth et al.(2021) | 173 + 45 - 53 |
Page generated on 2025/01/01 John Southworth (Keele University, UK)