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Sigma Draconis

Star system containing Penglai

Quinlong and Penglai
Image from Steve Bowers
Quinlong and its terrestial moon Penglai

Sigma Draconis - Data Panel

GalactographyStar: Sigma Draconis
Spectral Type: G9V
Mass: 1.690e+30 kg (0.850 x Sol)
Radius: 539,863.200 km (0.776 x Sol)
Absolute magnitude: 5.890
Luminosity: 0.412 x Sol
Temperature: 5,255 Kelvin
Rotation period: 28.043 days
Age: 3.000 billion years
Metallicity: 0.631 x Sol
Planets: 5
Region: Inner Sphere

Distance from Sol: 18.81 ly (2000 epoch)
PlanetsPLANET I (Sigma Draconis b)
Qinglong Semi-major axis: 0.845 AU
Period: 308 days (0.843 year)
Mass: 7.167e+25 kg (12 x Earth)
Type Gas Dwarf.
Radius: 20,937.259 km (x Earth)
Albedo: 0.753
Equilibrium temperature: 170.962 Kelvin
Gravitational acceleration: 10.912 m/sec^2 (1.113 g)

Moons of Qinglong:
Fangzhang: semi-major axis = 114,929.501 km and period = 1.296 days
Yingzhou: semi-major axis = 182,439.211 km and period = 2.591 days.
Daiyu: semi-major axis = 289,604.196 km and period = 5.183 days
Yuanjiao: semi-major axis = 459,718.006 km and period = 10.366 days
Penglai: (Retrograde) semi-major axis = 730,000.000 km and period = 20.731 days
Qinglong Penglai Daiyu
Image from Radtech497
Penglai before terraforming, with Qinglong and Daiyu in the background
Outer PlanetsPLANET II
Bailong:
Semi-major axis: 6.017 AU
Period: 16.012 years
Mass: 1.704e+23 kg (0.029 x Earth)
Radius: 2,392.921 km (0.375 x Earth)
Albedo: 0.814
Equilibrium temperature: 59.696 Kelvin
Gravitational acceleration: 1.986 m/sec^2 (0.203 g)
Moons of Bailong:
1) Zhongli Quan: Semi-major axis = 39,266.597 km, Orbital period = 5.234 days, Eccentricity = 0.00754, Inclination = 3.349°, Mass = 4.787e+21 kg, Radius = 788.578 km, Albedo = 0.614
2) Zhang Guolao: Semi-major axis = 176,088.268 km, Orbital period = 49.886 days, Eccentricity = 0.0794, Inclination = 0.576°, Mass = 3.490e+21 kg, Radius = 725.490 km, Albedo = 0.775
3) Han Xiangzi: Semi-major axis = 764,271.995 km, Orbital period = 454.590 days, Eccentricity = 0.087, Inclination = 2.220°, Mass = 8.151e+20 kg, Radius = 451.096 km, Albedo = 0.702


PLANET III
Huanglong:
Semi-major axis: 9.625 AU
Period: 32.394 years
Mass: 3.384e+22 kg (0.006 x Earth)
Radius: 1,426.065 km (0.224 x Earth)
Albedo: 0.526
Equilibrium temperature: 59.635 Kelvin
Gravitational acceleration: 1.111 m/sec^2 (0.113 g)
Moons of Huanglong:
1) Lu Dongbin: Semi-major axis = 93,542.951 km, Orbital period = 43.275 days, Eccentricity = 0.00505, Inclination = 0.817°, Mass = 8.022e+20 kg, Radius = 451.235 km, Albedo = 0.518
2) Lan Caihe: Semi-major axis = 535,604.982 km, Orbital period = 592.350 days, Eccentricity = 0.0967, Inclination = 3.906°, Mass = 8.667e+20 kg, Radius = 468.473 km, Albedo = 0.487

PLANET IV
Xuanlong:
Semi-major axis: 13.071 AU
Period: 51.264 years
Mass: 1.849e+22 kg (0.003 x Earth)
Radius: 1,163.781 km (0.182 x Earth)
Albedo: 0.137
Equilibrium temperature: 59.445 Kelvin
Gravitational acceleration: 0.911 m/sec^2 (0.093 g)
Moons of Xuanlong;
1) Li Tieguai: Semi-major axis = 62,194.888 km, Orbital period = 31.688 days, Eccentricity = 0.00663, Inclination = 4.206°, Mass = 4.999e+20 kg, Radius = 391.669 km, Albedo = 0.095
2) Cao Guojiu: Semi-major axis = 418,045.201 km, Orbital period = 548.399 days, Eccentricity = 0.0191, Inclination = 3.922°, Mass = 7.637e+20 kg, Radius = 458.223 km, Albedo = 0.123

PLANET V
Zhulong:
Semi-major axis: 25.553 AU
Period: 140.118 years
Mass: 4.652e+18 kg (7.790e-7 x Earth)
Radius: 1,035.615 km (0.162 x Earth)
Albedo: 0.648
Equilibrium temperature 33.977 Kelvin
Gravitational acceleration: 2.895e-4 m/sec^2 (2.952e-5 g)
Moons of Zhulong:
1) He Xian'gu: Semi-major axis = 17,831.441 km, Orbital period = 302.275 days, Eccentricity = 0.073, Inclination = 1.268°, Mass = 2.661e+17 kg, Radius = 32.821 km, Albedo = 0.663

These are the largest natural satellites orbiting each planet; there are many smaller bodies orbiting them as well.

There are two sparsely-populated debris belts in the system; one, lying between Qinglong and sigma Draconis, is made up of warm asteroids, while the other, lying between the orbits of Xuanlong and Zhulong, contains icy asteroids and comets.

The four outer planets are populated by a variety of Genen families, Aioids, cryoborgs, and haloist clades - these are generally Zoeific, Sophic, Keterist, or non-aligned.
Huanglong and Lu Dongbin
Image from Steve Bowers
Huanglong and its moon Lu Dongbin
AI ethosSophic, Zoeific, Keterist and non-aligned orientations are all common
PolityAffiliation: the various polities are either Sophic, Keterist, Zoeific, or non-aligned
ColonizedPenglai Orbit - 578 a.t.
Psyche, Art, CultureReligion, Ideology: Sophism, Keterism, Reformed Backgrounderism, Mirroredowl Posthumanism, Zoeificism, and Neotaoism are all widespread

Culture and Art: varies by polity and clade

Language: varies by polity and clade
PopulationPenglai 3 billion
Qinglong Bubblehabs 5 billions
Other Moons and orbital habitats around Qinglong 153 million
Bailong- 20,000
Huanglong- 65,000
Xuanlong- 10,000
Zhulong- 10,000
Sigdraconis asteroid Belts 25 million (est.).
TravelStargates:
Jade Gate - 250 meter gauge - to Tau Ceti
Menkou -100 metre gauge To Lam Wai-Chun

Cycle Routes: Macrocosmic orbit (includes Tau Ceti and a number of other Old Core capitals, 0.2 c, 950 year cycle)
Microcosmic orbit (includes some local brown dwarves, 0.2 c, 250 year cycle)
The Local Loop (includes a number of Old Core capitals, 0.3 c, 560 year cycle)
The Brain Trust (includes some brown dwarfs and a few diamond belt worlds, 0.1c, 750 year cycle)
The Spaceway Compact (includes a number of brown dwarves and some Old Core capitals, 0.2 c, 680 year cycle)


Major Spaceports: Michael Qian Ganymede National Spaceport (Penglai) and the Macros Docks (Daiyu) are the largest of several excellent spaceports that service the system
Hazard Rating0.0 to 9.0 (some outer system polities are off -limits and quite xenophobic)

Environmental Requirements: Many Qinglong Orbitals are Earth Standard baseline compatible, for other local environments please consult your guidemind
Sites of InterestMichael Qian Ganymede Shrine (Penglai), other
 
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Development Notes
Text by M. Alan Kazlev
Updated by Radtech497, QwertyYerty and Steve Bowers (16/9/17)
Initially published on 11 March 2010.

 
 
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