Zagrei system (RS 8474-694-7-16434-83 in Space Engine 0.9.8.0) is a binary system located at 16,910 light-years away from Earth, at the edge of Milky Way. It was discovered by humans in 3089 and it is home to five human colonies. The two stars orbit each other completely in 2933.767 earth years. The system is now under control of Confederacy of Humanity.
Zagrei Prime is a solar analog of G8 V spectrum, with a mass of 0.98837 M☉ and a radius of 1.0812 R☉. It has an average surface temperature of 5296.9 °C. It orbits system barycenter at 72.81 au. Its subsystem consists of 7 major planets and 2 dwarf planets.
Axieros is the first planet, an hot D-class with a mass of 0.058403 M⊕ and 0.35571 R⊕, giving it a gravity of 0.46157 g. Its year consist of 17.234 earth days because of semimajor axis of 0.13 au. Its rotation period is 5 times bigger than its orbital period. Sulphur dioxide comprises much of its thin atmosphere (0.0152 atm), there are also traces of krypton.
Pleystor is the second planet, another hot D-class with a mass 0.28501 M⊕ and 0.58833 R⊕, giving it a gravity of 0.82342 g. It orbits Zagrei Prime in 32.007 earth days at a semimajor axis of 0.2 au. It completes a rotation around its axis in 6 times of orbital period. Its atmosphere has a pressure of 0.577 atm and it is composed of 61.2 % carbon dioxide, 38.1 % sulphur dioxide, 0.684 % nitrogen and traces of ethylene,acetylene,hydrogen sulfide,carbon monoxide, argon,propene,propane,neon and krypton.
Casmilus is warm J-class planet and third planet of Zagrei Prime system. He has a semimajor axis of 0.34 au, giving it a orbital period of 74.273 earth days. He rotates around its axis in 3/2 of that of orbital period. He weights 1.4839 M♃ and has a radius of 11.985 R⊕,giving him a gravity of 3.2836 g. 25 captured asteroids orbits Casmilus as his moons.
Zalmoxes, a temperate E-class, is fourth planet planet of Zagrei Prime and third human colony to be estabilished in Zagrei system,its major moon, Kogaion, another temperate E-class being the first human colony.
Rhesus, a cool S-class world is fifth planet and first dwarf planet. It orbits Zagrei Prime in 1.287 earth years at a semimajor axis of 1.18 au and rotates around its axis in 2.588 earth days.It weights 0.0021715 M⊕ and have a radius of 0.16768 R⊕,giving a gravity of 0.077234 g. It has two dwarf moons.
Zerintios, a cold S-class world is sixth planet and second dwarf planet. It orbits Zagrei Prime in 3.350 earth years at a semimajor axis of 2.23 au and rotates around its axis in 42h50m42s.20.It weights 0.013044 M⊕ and have a radius of 0.3024 R⊕,giving a gravity of 0.14264 g. It has two dwarf moons.It experiences a very "mild" seasonal cycle because of its axial tilt of 16°31'25''.12.
Axiocersus, a cold I-class world, is a seventh planet of Zagrei Prime. Its orbital period is 9.23 earth years at a semimajor axis of 4.38 au and rotates around its axis in 33h51m30s.32. It weights 0.068107 M⊕ and has a radius of 0.54997 R⊕,giving it a gravity of 0.22518. It has 6 moons, 3 of which are major ones. It has a very thin atmosphere (0.00000186 atm) of 94.3 % carbon dioxide, 3.95 % krypton,1.55 % argon,0.159 % xenon and traces of propane.
Axiocersus' major moons
|Name||Mass||Radius||Gravity||Orbital Period||Rotation Period||Class||Type|
|Axiocersa||0.0023781 M⊕||0.1836 R⊕||0.070549||18.659 earth days||18.659 earth days||Cold I-class||Regular|
|Jatrus||0.036493 M⊕||0.041788 R⊕||0.0020898||248.172 earth days||248.172 earth days||Cold I-class||Irregular|
|Racla||0.056836 M⊕||0.041612 R⊕||0.0032823||299.138 earth days||3.276 eath years||Cold I-class||Irregular|
Gebeleis is a frozen J-class world and its is eight planet of Zagrei Prime. It orbits the star in 19.014 earth years at a semimajor axis of 7.1 au annd it rotates around its axis in 9h37m38s.72. It weights 0.59557 M♃ and has a radius of 10.495 R⊕, giving it a gravity of 1.7187 g. The gebeleian moon system consist of 74 moons, 10 major ones.
Gebeleis regular major moons
|Clara||0.027266 M⊕||0.40889 R⊕||0.16308 g||21h43m14s||Hot selena||0.00000186 atm, 99.8 % sulphur dioxide,0.163 % krypton, traces of chlorine and xenon|
|Eirene||0.0032473 M⊕||0.19149 R⊕||0.088556 g||38h47m15s.75||Cold selena||None|
|Perkos||0.0038399 M⊕||0.21505 R⊕||0.083032 g||2.886 earth days||Frozen ice world||None|
|Thrace||0.0045144 M⊕||0.21345 R⊕||0.099083 g||5.153 earth days||Frozen ice world||None|
|Mysia||0.0061591 M⊕||0.23642 R⊕||0.11019 g||16.431 earth days||Frozen ice world||None|
|Aboleon||0.071602 M⊕||0.558889 R⊕||0.22923 g||29.335 earth days||Frozen ice world||None|
Gebeleis irregular major moons
Gebeleis have 4 major frozen I-class irregular moons
|Name||Mass||Radius||Gravity||Orbital period||Rotation period|
|Bryges||0.0301456 M⊕||0.034721 R⊕||0.0025005 g||1.019 earth years||52.842 earth days|
|Getae||0.046358 M⊕||0.037793 R⊕||0.0037793 g||1.029 earth years||32.421 earth days|
|Carpia||0.030033 M⊕||0.031564 R⊕||0.0030144 g||1.325 earth years||16.104 earth days|
|Sarmizegetusa||0.046175 M⊕||0.034857 R⊕||0.0038003 g||1.337 earth days||13.802 earth days|
Bendis was a frozen T-class world before terraforming. Now is a temperate E-class world and a popular tourist destination because of her seven major moons, her huge ring system and her position in Milky Way. It was the fifth colony estabilished in Zagrei system.
Zagrei Secundus is a red dwarf orbiting the system barycenter at 132.46 au. It weights 0.54327 M☉ and has a radius of 0.6931 R☉. His subsystem consist of 7 major planet and one dwarf system.
Ballista, an hot S-class is the first planet and the only dwarf planet of Zagrei Secundus. It orbits Zagrei Secundus in 3.727 earth days at a semimajor axis of 5742488.49 km and it is tidally locked. It weights 0.0040611 M⊕ and have a radius of 0.16744 R⊕,giving a gravity of 0.14486 g.
Zoura, an hot S-class is the second planet of Zagrei Secundus. It orbits Zagrei Secundus in 10.371 earth days at a semimajor axis of 0.08 au and it is tidally locked. It weights 0.023048 M⊕ and have a radius of 0.33648 R⊕,giving a gravity of 0.20357 g. It has one dwarf moon.
Nadia is warm J-class planet and third planet of Zagrei Secundus system. She has a semimajor axis of 0.12 au, giving her a orbital period of 19.959 earth days and it is tidally locked.. She weights 0.31134 M♃ and has a radius of 9.5261 R⊕,giving a gravity of 1.0904 g. 9 captured asteroids orbits Nadia as her moons.
Sabazios, a moonless tidally locked temperate E-class world, is a human colony and second one to be estabilished in Zagrei system. It orbits Zagrei Secundus as its fourth planet.
Zibelthiurdos is cold J-class planet and fifth planet of Zagrei Secundus system. It has a semimajor axis of 0.38 au, giving him a orbital period of 115.338 earth days and rotates around his axis 115.573 earth days.. He weights 2.3341 M♃ and has a radius of 12.149 R⊕,giving a gravity of 5.0258 g. 33 captured asteroids orbits Zibelthiurdos as his moons.
Kotys is a cold N-class world and its is sixth planet of Zagrei Secundus. It orbits the star in 255.68 earth days at a semimajor axis of 0.64 au and it rotates around its axis in 11h20m22s.33. It weights 13.244 M⊕ and has a radius of 3.053 R⊕, giving it a gravity of 1.4209 g. The kotysian moon system consist of 14, 2 major ones.
Major moons of Kotys
|Semele||0.081237 M⊕||0.54724 R⊕||0.27127 g||38h50m25s.04||Initially a temperate desert, now a temperate terra||Regular|
|Derzelas||0.043503 M⊕||0.038925 R⊕||0.0028711 g||13.13 earth days||Cold ice world||Irregular|
Attis is a frozen N-class world and its is seventh planet of Zagrei Secundus. It orbits the star in 2.231 earth years at a semimajor axis of 1.39 au annd it rotates around its axis in 10h40m15s.34. It weights 15.894 M⊕ and has a radius of 3.2005 R⊕, giving it a gravity of 1.5517g. The attisian moon system consist of 21, 5 major ones.
Attis' regular major moons
Attis has 2 S-class regular moons
|Cybele||0.0011477 M⊕||0.1358 R⊕||0.062231 g||24h50m31s.89|
|Yambadula||0.013288 M⊕||0.32337 R⊕||0.12707 g||2.243 earth days|
Attis' irregular moons
Attis has 3 cold I-class irregular moons.
|Name||Mass||Radius||Gravity||Orbital period||Rotation period|
|Men||0.023605 M⊕||0.033321 R⊕||0.002126 g||76.116 earth days||Tidally locked|
|Agdistis||0.035763 M⊕||0.035217 R⊕||0.0028836 g||79.435 earth days||Tidally locked|
|Dindymene||0.055623 M⊕||0.039073 R⊕||0.0036434||83.302 earth days||Tidally locked|
Cotina, a frozen I-class, is the eight planet Zagrei Secundus. It orbits Zagrei Secundus in 5.589 earth years at a semimajor axis of 2.25 au and it rotates around her axis in 4.802 earth days. It weights 0.027009 M⊕ and have a radius of 0.38343 R⊕,giving a gravity of 0.18371 g.
Agatyrs, a frozen I-class, is Cotina only moon. Its orbital period Cotina in 4.802 earth days. It weights 0.011844 M⊕ and have a radius of 0.31142 R⊕,giving a gravity of 0.12213 g.
HerosHeros, a N-class world, is the system only planet that orbits both stars at once. It is a distant and very dark world, orbiting system barycenter in 21716.616 earth days at a semimajor axis of 897.26 au and rotates around its axis in 9h08m52s.03. It weights 19.355 M⊕ and have a radius of 3.3651 R⊕,giving a gravity of 1.7092 g. Its moon system contains 24 moons, 9 major ones.
Heros' major moons
|Name||Mass||Radius||Gravity||Orbital period||Rotation period||Class|
|Azdul||0.0059045 M⊕||0.23316 R⊕||0.10861 g||23h56m28s.15||Tidally locked||Cold selena|
|Zumudros||0.0006872 M⊕||0.121674 R⊕||0.046366 g||2.049 earth days||Tidally locked||Cold selena|
|Abydos||0.000924469 M⊕||0.13433 R⊕||0.051248 g||8.643 earth days||Tidally locked||Frozen ice world|
|Apulon||0.0010705 M⊕||0.13271 R⊕||0.60783 g||17.752 earth days||Tidally locked||Frozen ice world|
|Berzobis||0.012387 M⊕||0.31602 R⊕||0.12403 g||36.499 earth days||Tidally locked||Frozen ice world|
|Caria||0.0014334 M⊕||0.14617 R⊕||0.067091 g||74.882 earth days||Tidally locked||Frozen ice world|
|Dierna||0.0016598 M⊕||0.16302 R⊕||0.062454 g||153.795 earth days||Tidally locked||Frozen ice world|
|Genucla||0.0019245 M⊕||0.16122 R⊕||0.074133 g||315.867 earth days||3.532 earth days||Frozen ice world|
|Ismara||0.038526 M⊕||0.037944 R⊕||0.0026759 g||979.196 earth years||13.55 earth days||Frozen ice world|