This page summarises the information held within TEPCat for the transiting planetary system Kepler-448. Please see here for descriptions of the quantities given below.
| Quantity | Value | Unit |
|---|---|---|
| Reference of discovery paper | 2015A+A...579A..55B | |
| Date of discovery paper | 2015 / 4 / 17 | y / m / d |
| Data/telescope used for discovery | Kepler | |
| Right ascension | 19 49 48.90 | h m s |
| Declination | +41 00 39.6 | d m s |
| Right ascension (decimal) | 297.45375 | degrees |
| Declination (decimal) | 41.01100 | degrees |
| V-band apparent magnitude | 11.38 | mag |
| K-band apparent magnitude | 10.23 | mag |
| Transit duration | 0.2826 ( 6.782 ) | day hour |
| Transit depth | 0.9 | % |
| Time of mid-transit | 2454961.74166 ± 0.00003 | HJD or BJD |
| Orbital period | 17.85522731 ± 0.00000059 | days |
| Reference for orbital ephemeris | 2021MNRAS.503.4092B |
| Quantity | Value | Unit |
|---|---|---|
| Stellar effective temperature | 6820 ± 120 | K |
| Stellar metal abundance ([Fe/H] or [M/H]) | +0.09 ± 0.15 | dex |
| Stellar mass | 1.452 ± 0.093 | Msun |
| Stellar radius | 1.63 ± 0.15 | Rsun |
| Stellar logarithmic surface gravity | 4.34 ± 0.15 | c.g.s. |
| Stellar mean density | 0.335 ± 0.080 ( 0.47 ± 0.11 ) | ρsun g cm-3 |
| Orbital eccentricity | 0.0 +0.72 −0.0 | |
| Orbital semimajor axis | 0.151 ± 0.003 | AU |
| Planetary mass | 1.1 +3.5 −0.8 ( 3497 +11126 −2543 ) | Mjup Mearth |
| Planetary radius | 1.44 ± 0.13 ( 16.1 ± 1.5 ) | Rjup Rearth |
| Planetary surface gravity | m/s2 log(cgs) | |
| Planetary mean density | ρjup g cm-3 | |
| Planetary equilibrium temperature | K | |
| Reference of detailed study | 2017AJ....154...64M |
| Reference | λ (degrees) |
|---|---|
| Bourrier et al. (2015) | 12.6 + 3.0 - 2.9 |
| Johnson et al. (2017) | −7.1 + 4.2 - 2.8 |
Page generated on 2025/02/12 John Southworth (Keele University, UK)