THE STAR SYSTEM

A six-planet system orbiting a G8V yellow dwarf star slightly hotter than the Sun.

THE SUN

Type: G8V main-sequence star

Mass: 0.90 M☉

Luminosity: 0.60 L☉

Temperature: ~5400 K (slightly orange in hue)

Notable feature: A stable star with a long lifespan, ideal for fostering life.

THE PLANETS (INNER TO OUTER)

AUREA 

Type: Rocky, Mercury-like

Orbit: 0.25 AU (hot, close-in)

Size: 0.35 R⊕ · 0.2 M⊕

Notes: Scorched surface, thin or absent atmosphere.

VESPERA

Type: Super-Earth, volatile-rich

Orbit: 0.45 AU

Size: 1.5 R⊕ · 4.5 M⊕

Notes: Thick atmosphere, possibly greenhouse-dominated; could resemble a “hot Venus.”

HOME

Type: Temperate, habitable-zone world

Orbit: 0.78 AU (year = 265 days)

Size: 0.92 R⊕ · 0.78 M⊕

Stellar Flux: ~99% of Earth’s

Climate: Earthlike, mild greenhouse keeps liquid water stable

Moon: Selene — about 0.8 lunar mass, 350,000 km away, stabilises Home’s tilt and drives strong tides.

Notes: The home of the world of Miradorium

CERA

Type: Mini-Neptune

Orbit: 1.60 AU

Size: 2.2 R⊕ · 8 M⊕

Notes: Hydrogen–helium envelope over an icy/rocky core; possible exomoon system.

JOVIA

Type: Gas giant, Saturn-class

Orbit: 3.8 AU

Size: 9 R⊕ · 127 M⊕ (~0.4 M♃)

Notes: Ring system possible, numerous moons.

CRYON

Type: Ice giant, Neptune-like

Orbit: 7.2 AU

Size: 3.7 R⊕ · 47 M⊕

Notes: Cold, methane-rich atmosphere, deep blue hue.