This page summarises the information held within TEPCat for the transiting brown dwarf system EPIC 219388192. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2017AJ....153..131N | |
| Date of discovery paper | 2016 / 10 / 28 | y / m / d |
| Data/telescope used for discovery | K2 | |
| Right ascension | 19 17 34.04 | h m s |
| Declination | −16 52 17.8 | d m s |
| Right ascension (decimal) | 289.39183 | degrees |
| Declination (decimal) | -16.87161 | degrees |
| V-band apparent magnitude | 12.54 | mag |
| K-band apparent magnitude | 10.73 | mag |
| Transit duration | 0.15017 ( 3.6041 ) | day hour |
| Transit depth | 1.0 | % |
| Time of mid-transit | 2457341.037551 ± 0.000095 | HJD or BJD |
| Orbital period | 5.2926298 ± 0.0000086 | days |
| Reference for orbital ephemeris | arXiv:2506.18971 |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 5553 +82 −86 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.067 ± 0.090 | dex |
| Stellar mass | 1.018 +0.027 −0.026 | Msun |
| Stellar radius | 1.067 ± 0.022 | Rsun |
| Stellar logarithmic surface gravity | 4.391 ± 0.017 | c.g.s. |
| Stellar mean density | 0.841 +0.017 −0.016 ( 1.187 +0.024 −0.023 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.1892 +0.0024 −0.0029 | |
| Orbital semimajor axis | 0.06048 +0.00130 −0.00079 | AU |
| Planetary mass | 37.3 +1.6 −1.0 ( 118573 +5086 −3179 ) | Mjup Mearth |
| Planetary radius | 0.963 +0.037 −0.033 ( 10.79 + 0.41 − 0.37 ) | Rjup Rearth |
| Planetary surface gravity | 581 +26 −21 4.76 +0.02 −0.02 | m/s2 log(cgs) |
| Planetary mean density | 17.6 +1.2 −1.1 ( 23.3 + 1.6 − 1.5 ) | ρjup g cm-3 |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | arXiv:2506.18971 |
| Reference | λ (degrees) |
|---|---|
| Zak et al. (2025) | 16 + 16 - 15 |
| Carmichael et al. (2025) | 1.4 + 2.1 - 2.5 |
Page generated on 2025/08/27 John Southworth (Keele University, UK)