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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 30089 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

Zagrei Prime

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

Axieros

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

Pleystor

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

Casmilus

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

Zalmoxes

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

Rhesus

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

Zerintios

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

Axiocersus

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

Gebeleis

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

Name Mass Radius Gravity Orbital period Class Atmosphere
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

Bendis

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

Zagrei Secundus

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

Ballista

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

Zoura

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

Nadia

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

Sabazios

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

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

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

Name Mass Radius Gravity Orbital period Class Type
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

Attis

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

Name Mass Radius Gravity Orbital period
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

Cotina

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

Agatyrs

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.

Heros

Heros
Heros, 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.
Agatyrs

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
Azdul has very vulcanism which have led to a thin atmosphere (0.000896 atm) of sulphur dioxide and of traces of krypton and xenon.
Agatyrs
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