The Qiangyin (Ehlen for Silver Jewelry) system is located within the Arm 06 of Kagami Galaxy. It is the home system of the Ehlen and the seat of Ehlen governance.

Below are the general characteristics for the star at the center of the Qiangyin system:

• Name: Qiangyin
• Type: G0
• Mass: 2.18735 × 10³⁰ kg
• Average Temp: 6000 K
• Luminosity: 7.3279404 x 10²⁶ W
• Radius: 891,317.76 km
• Age: 5.7 billion years old

• Roche Limit: 0.11 AU
• Outer System Limit: 44.0 AU
• Snow Line: 5.09 AU

There are 11 planets in this system. Below is their statistical information.

Qiangyin I, it is a tiny rocky terrestrial planet tidally locked to Qiangyin. Save for some ruins of alien design, there isn't anything interesting about the planet.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (0.29 AU)
• Perihelion/Aphelion: (.26 AU/.32 AU)
• Eccentricity: 0.1
• Orbital Period: 54.64 days
• Natural Satellites: None

• Mass: 1.0750266 × 10²⁴ kg
• Density: 4.411 g/cm3
• Diameter: 7772.62 km
• Surface Gravity: 0.48 g
• Rotational Period: 54.68 days
• Axial Tilt: 35°
• Atmospheric Pressure: 0 atm
• Atmospheric Composition: None
• Average Surface Temp: 587.97 K / 314.82°C
• Hydro Coverage: 0%
• Volcanics: Light
• Tectonic Activity: None

• Planetary Population: None
• Facilities: None

The Diyu (Ehl for inferno or to punish severely) Belt is a resource-rich asteroid belt the Ehlen historically sent prisoners too for hard labor. The Kuvexians have since taken over operations with Ehlen oversight.

• Type: Asteroid Belt
• Orbital Radius: million km (0.52 AU)
• Perihelion/Aphelion: (0.42 AU/ 0.63 AU)
• Eccentricity: 0.2
• Orbital Period: 131.95 days

• Planetary Population: 500,000
• Facilities: Asteroid Mining

Qiangyin III is a small rocky planet that possesses a trace atmosphere. The planet is largely used by the Ehlen for war games and weapon testing.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (0.89 AU)
• Perihelion/Aphelion: (.76 AU/ 1.02 AU)
• Eccentricity: 0.15
• Orbital Period: 292.46 days
• Natural Satellites: 1 Moonlet

• Mass: 8.95855 × 10²³ kg
• Density: 3.301 g/cm3
• Diameter: 8,027.46 km
• Surface Gravity: 0.38 g
• Rotational Period: 5 days (retrograde)
• Axial Tilt: 48°
• Atmospheric Pressure: 0 atm
• Atmospheric Composition: Trace
• Average Surface Temp: 332.65 K / 59.5°C
• Hydro Coverage: 0%
• Volcanics: Light
• Tectonic Activity: None

• Planetary Population: 75,000
• Facilities: None

The homeworld of the Ehlen, Ehl is a chilly planet that is dominated by temperate forests and grasslands. The planet is unique as its atmosphere has marginal amounts of chlorine in the atmosphere due to microbes using photosynthesis to break down excess salt.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (1.39 AU)
• Perihelion/Aphelion: (1.25 AU/1.53 AU)
• Eccentricity: 0.1
• Orbital Period: 570.9 days
• Natural Satellites: 2 Moonlets

• Mass: 2.487 × 10¹² kg
• Density: 6.0654 g/cm3
• Diameter: 13,124.26 km
• Surface Gravity: 1.13 g
• Rotational Period: 19 hours retrograde (opposite of earth)
• Axial Tilt: 14°
• Atmospheric Pressure: 1.02 atm
• Atmospheric Composition: Nitrogen, Oxygen, Argon, trace amounts of Chlorine.
• Average Surface Temp: 280 K / 6.85°C
• Hydro Coverage: 60%
• Volcanics: Moderate
• Tectonic Activity: Moderate

• Planetary Population: 4.5 billion

A small and cold rocky planet, Qiangyin V possesses a thin atmosphere of mostly carbon dioxide.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (2.73 AU)
• Perihelion/Aphelion: (2.59 AU/ 2.86 AU)
• Eccentricity: 0.05
• Orbital Period: 1565.5 days
• Natural Satellites: 2 Moonlets

• Mass: 4.180659 × 10²³ kg
• Density: 3.86 g/cm3
• Diameter: 4,204.86 km
• Surface Gravity: 0.33 g
• Rotational Period: 1.17 days
• Axial Tilt: 24°
• Atmospheric Pressure: 0 atm
• Atmospheric Composition: Trace
• Average Surface Temp: 190.17 K / -82.98°C
• Hydro Coverage: 10% (ice)
• Volcanics: Light
• Tectonic Activity: None

• Planetary Population: None
• Facilities: None

An eccentric Gas Giant, Qiangyin VI holds special status with Ehlen culture. Passing into the inner system, the planet shines brightly in the Ehl sky every 4.5 local years. Each of its moons and moonlets is named after a mythic retainer.

• Type: Gas Giant
• Orbital Radius: 43.5 million km (3.82 AU)
• Perihelion/Aphelion: (0.76 AU/ 6.87 AU)
• Eccentricity: 0.8
• Orbital Period: 2593.26 days
• Natural Satellites: 1 Moon, 9 Moonlets

• Mass: 3.583422 × 10²⁷ kg
• Density: 1.71 g/cm3
• Diameter: 158,765 km
• Cloudtop Gravity: 3.86 g
• Rotational Period: 54.68 days
• Axial Tilt: 35°
• Blackbody Temp: 167.42 K

• Planetary Population: None
• Facilities: None

A large Gas Giant, Qiangyin VII is the first of “Guardians” or conventional Gas Giants ancient Ehlen believed to be deities.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (6.1 AU)
• Perihelion/Aphelion: (5.8 AU/ 6.41 AU)
• Eccentricity: 0.05
• Orbital Period: 5248.38 days
• Natural Satellites: 4 Moons, 11 Moonlets

• Mass: 2.388948 × 10²⁸ kg
• Density: 8.822 g/cm3
• Diameter: 172,908.94
• Cloudtop Gravity: 21.72 g
• Rotational Period: 54.68 days
• Axial Tilt: 35°
• Blackbody Temp: 132.35 K

• Planetary Population: None
• Facilities: None

Qiangyin VIII is the 2nd of the Guardians. It is said within Ehlen mythology this planet was a trickster of the Ehlen Pantheon.

* Type: Rock, Terrestrial

• Orbital Radius: 43.5 million km (9.77 AU)
• Perihelion/Aphelion: (6.84 AU/ 12.7 AU)
• Eccentricity: 0.3
• Orbital Period: 10621.98 days
• Natural Satellites: 5 Moons, 13 Moonlets

• Mass: 8.958555 × 10²⁶ kg
• Density: 1.048 g/cm3
• Diameter: 117,736.08 km
• Cloudtop Gravity: 1.76 g
• Rotational Period: 54.68 days
• Axial Tilt: 35°
• Blackbody Temp: 104.63 K

• Planetary Population: None
• Facilities: None

3rd of the Guardians.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (15.63 AU)
• Perihelion/Aphelion: (9.38 AU/ 21.88 AU)
• Eccentricity: 0.4
• Orbital Period: 21497.38 days
• Natural Satellites: 2 Moons, 13 Moonlets

• Mass: 8.958555 × 10²⁶ kg
• Density: 1.048 g/cm3
• Diameter: 117,736.08 km
• Cloudtop Gravity: 1.76 g
• Rotational Period: 54.68 days
• Axial Tilt: 35°
• Blackbody Temp: 82.72 K

• Planetary Population: None
• Facilities: None

Fourth of the Guardians. Ancient Ehlen believed it was responsible for disasters when not appeased.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (23.44 AU)
• Perihelion/Aphelion: (19.92 AU/ 26.96 AU)
• Eccentricity: 0.15
• Orbital Period: 39493.2 days
• Natural Satellites: 3 Moons, 12 Moonlets

• Mass: 8.958555 × 10²⁴ kg
• Density: 1.434 g/cm3
• Diameter: 49,184.12 km
• Cloudtop Gravity: 1.0 g
• Rotational Period: 54.68 days
• Axial Tilt: 35°
• Blackbody Temp: 67.54 K

• Planetary Population: None
• Facilities: None

Last planet of the the Qiangyin system, Qiangyin XI's nitrogen atmosphere is frozen to on the surface due to the coldness of deep space.

• Type: Rock, Terrestrial
• Orbital Radius: 43.5 million km (37.5 AU)
• Perihelion/Aphelion: (31.88 AU/ 43.13 AU)
• Eccentricity: 0.15
• Orbital Period: 79928.62 days
• Natural Satellites: None

• Mass: 5.97237 × 10²² kg
• Density: 2.757 g/cm3
• Diameter: 3,695.18 km
• Surface Gravity: 0.14 g
• Rotational Period: 1.04 days
• Axial Tilt: 16°
• Atmospheric Pressure: 0 atm
• Atmospheric Composition: None
• Average Surface Temp: 35.78 K / -237.37°C
• Hydro Coverage: 0%
• Volcanics: Light
• Tectonic Activity: None

• Planetary Population: None
• Facilities: None

Demibear created this article on 2020/12/07 17:14. Made with GURPS Space 4th Edition star system generation rules.

Approval Thread