Halley
| Earth | |
|---|---|
| |
| Earth in Orbiter 2016 | |
| Designation | |
| Name | Earth |
| Reference body | Sun |
| Number of satellites | 1 |
| Planetary mean orbits | |
| Epoch | J2000 (1 January 2000) |
| Semimajor axis (a) | 1.00000011 AU (1.495978871×1011 km) |
| Eccentricity (e) | 0.01671022 |
| Inclination (i) | 0.00005° (0.00000087 radian) |
| Longitude of the ascending node (LAN, ☊) | -11.26064° (-0.1965352 radian) |
| Longitude of periapsis (ϖ) | 102.94719° (1.796767 radian_ |
| Mean longitude (L) | 100.46435° (1.753434 radian) |
| Planetary orbital element centennial rates | |
| Semimajor axis (a) | -0.00000005 AU/Century |
| Eccentricity (e) | -0.00003804 Century-1 |
| Inclination (i) | -46.94 seconds/Century |
| Longitude of the ascending node (LAN, ☊) | -18228.25 seconds/Century |
| Longitude of periapsis (ϖ) | 1198.28 seconds/Century |
| Mean longitude (L) | 129597740.63 seconds/Century |
| Selected physical parameters | |
| Mean radius | 6371.01 km |
| Mass | 5.973698968×1024 kg |
| Density | 5.515 g/cm3 |
| Sidereal rotation period | 23.93447 hours |
| Sidereal orbit period | 0.9999786 years |
| Magnitude V(1,0) | -3.86 |
| Geometric albedo | 0.65 |
| Equatorial gravity | 9.780327 m/s2 |
| J coefficients | 1082.6269e-6 -2.51e-6 -1.60e-6 -0.15e-6 |
| Escape velocity | 11.186 km/s |
| SOI radius | 2.6×108 m |
| Rotation elements | |
| North pole right ascension (α1) | n/a |
| North pole declination (δ1) | 90° |
| Obliqutiy of ecliptic | 23.44° |
| Longitude of Sun's transit | 0° |
| Atmospheric parameters | |
| Surface Pressure | 101.4 kPa |
| Surface Density | 1.217 kg/m3 |
| Scale height | 8.5 km |
| Average temperature | 288 K |
| Wind speeds | 0-100 m/s |
| Ecliptic position from primary* | |
| Note | *Elements given are from Orbiter.pdf (2016) |
Earth is the third planet from the Sun and is the only body known to harbor life. Earth is one of the four 'rocky' planets the other three being Mercury, Venus, and Mars. The only natural satellite orbiting Earth is the Moon.
The Earth is close to an oblate spheroid, but, in Orbiter it's modeled as a sphere.
Earth in Orbiter
The Earth is one of the original twelve bodies modeled in Orbiter beginning with Orbiter 2001. In 2001, the orbital characteristics were defined in the Earth.cfg file, but all versions after that, the orbit was defined in the Vsop87.dll file in the Modules folder. Physical, Rotation and precession, Atmospheric, Cloud, Visualisation parameters are defined in the Earth.cfg file.
Orbiter 2001 included only three surface bases, but Orbiter 2002 expanded the list to 35.