TRAPPIST-1 d
extrasolar planet
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Summary
TRAPPIST-1 d is an exoplanet[1].
Key Facts
- Instance of: unconfirmed exoplanet[2]
- Constellation: Aquarius[3]
- Parent astronomical body: TRAPPIST-1[4]
- Catalog code: K2-112d[5], TRAPPIST-1d[6], EPIC 246199087d[7], TIC 278892590d[8]
- Time of discovery or invention: May 2, 2016[9], May 2016[10]
- Discovery method: transit method[11]
- Orbital eccentricity: 0.0[12], 0.07[13], 0.00837[14]
- Orbital inclination: 89.896 degree[15], 89.65 degree[16], 89.75 degree[17]
- Mass: 0.41 Earth mass[18], 0.297 Earth mass[19], 0.388 Earth mass[20], 0.0013 Jupiter mass[21]
- Temperature: 288.0 K[22]
- Radius: 0.772 Earth radius[23], 0.784 Earth radius[24], 0.788 Earth radius[25], 0.0689 Jupiter radius[26]
- Orbital period: 4.049219 day[27], 4.04978035 day[28], 4.04961 day[29]
- Parallax: 80.4512 milliarcsecond[30]
- Semi-major axis of an orbit: 0.02228038 astronomical unit[31], 0.02227 astronomical unit[32], 0.02226 astronomical unit[33], 0.02144 astronomical unit[34]
- Argument of periapsis: -8.73 degree[35]
- Right ascension: 346.62236835536920 degree[36]
- Declination: -5.04139769179028 degree[37]
- Epoch: J2000.0[38]
- Declination component of proper motion: -479.403 milliarcsecond per year[39]
- Right ascension component of proper motion: 930.879 milliarcsecond per year[40]