about
Lasto (aka RS 0-6-57804-648-2690-7-142604-929 6) is the eigth planet of the Autchen system and is memorable for being greenish, and being the only planet with visible rings. It is a cold meganeptune (contrary to the former belief that it was a gas giant), and has many small natural satellites.The atmosphere of Lasto is composed of mainly Hydrogen (H2, 92.5%), Helium (He, 7.13%), and Methane (CH4, 0.294%). However, there are multiple trace elements of elements such as Nitrogen (N2, 415ppm), Ammonia (NH3, 249ppm), Oxygen (O2, 78.9ppm), Acetylene (C2H2, 33.1ppm), Ethylene (C2H4, 14.1ppm), Neon (Ne, 12.6ppm), Argon (Ar, 7.41ppm), Ethane (C2H6, 5.88ppm), Propane (C3H8, 3.59ppm), Octane (C8H18, 2.92ppm), Water Vapor (H2O, 37.6ppb), Carbon Dioxide (CO2, 17.9ppb), Hydrogen Sulfide (H2S, 15.9ppb), Krypton (Kr, 3.79ppb), Xenon (Xe, 394ppt), Sulfur Dioxide (SO2, 95.7ppt), Carbon Monoxide (CO, 3.41ppt), and Chlorine (Cl2, 3.21ppt) (NOTE: anything below 1ppb may not be accurate, however it is thr readings from the current state of technology). The air density of Lasto is 0.23471kg/m3, and the air tempurature being -157.98°C. The speed of sound in Lasto's atmosphere is 774.33m/s, the exosphere tempurature is 695.78°C, and has no greenhouse effect in the atmosphere. The mass of Lasto's atmosphere in total comes out to 2.7246*1026kg, with an average molar mass of 2.218, and a relative mass of 0.63804.
Lasto has a mean diameter of 107126km, but due to it's rotational period it bulges more around the equator, with an equitorial diameter of 109930km, and a polar diameter of 101731km. From this we can estimate the oblateness of 0.0745, and the circumfrence of Lasto being 345355km. Lasto has a mass of 4.2703*1026kg, with a density of 0.6634g/cm3. Thus, the ASI of Lasto, is about 0.242. Lasto's geological internal structure is made out of 54% water/icy envelope, 28.4% hydrogen, 11.3% silicate mantle, 3.46% metallic core, and 2.76% helium.
Lasto is 11.9 billion years old, being the same age as it's star Autchen. Lasto has a mean gravity of 9.920m/s2, however this is different from where you are on Lasto, for example the most extreme examples are gravity on the equator (8.2802m/s2), and gravity on the poles (exactly 11m/s2). From this, we can calculate the circular (orbit) velocity being 23.35km/s, and the escape velocity of 33.02km/s. The albedo fraction of Lasto is about 0.3, with an insolation of 1/35.947 and a tidal heating of 510.62W.
Lasto orbit TODO!!!
