This page summarises the information held within TEPCat for the transiting planetary system K2-19b. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2015A+A...582A..33A | |
| Date of discovery paper | 2015 / 3 / 3 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 11 39 50.48 | h m s |
| Declination | +00 36 12.9 | d m s |
| Right ascension (decimal) | 174.96033 | degrees |
| Declination (decimal) | 0.60358 | degrees |
| V-band apparent magnitude | 13.00 | mag |
| K-band apparent magnitude | 11.16 | mag |
| Transit duration | 0.1362 ( 3.269 ) | day hour |
| Transit depth | 0.6 | % |
| Time of mid-transit | 2456829.22231 ± 0.00016 | HJD or BJD |
| Orbital period | 7.922806 ± 0.000090 | days |
| Reference for orbital ephemeris | arXiv:2510.01985 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5350 ± 110 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.03 ± 0.02 | dex |
| Stellar mass | 0.885 ± 0.034 | Msun |
| Stellar radius | 0.845 ± 0.039 | Rsun |
| Stellar logarithmic surface gravity | 4.531 ± 0.044 | c.g.s. |
| Stellar mean density | 1.23 ± 0.33 ( 1.74 ± 0.47 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.043 ± 0.024 | |
| Orbital semimajor axis | 0.07847 ± 0.00093 | AU |
| Planetary mass | 0.0969 ± 0.0041 ( 30.8 ± 1.3 ) | Mjup Mearth |
| Planetary radius | 0.588 ± 0.020 ( 6.59 ± 0.22 ) | Rjup Rearth |
| Planetary surface gravity | 6.93 ± 0.44 2.84 ± 0.03 | m/s2 log(cgs) |
| Planetary mean density | 0.445 ± 0.040 ( 0.590 ± 0.053 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | 857 ± 21 | K |
| Reference of detailed study | arXiv:2510.01985 |
K2-19b does not have an entry in the catalogue of orbital obliquity measurements.
Page generated on 2025/11/11 John Southworth (Keele University, UK)