Ravla

Ravla, commonly referred to as Craehlil VI, is the sixth planet in the Craehlil System of the Orion Arm of the Milky Way Galaxy, orbiting the orange dwarf star Craehlil at a distance of 7.98 AU. A cold gas giant characterized by its muted banding and slow axial rotation, Ravla exists beyond the system's frost line and within a zone of low stellar radiation and frequent magnetic interference. Its immense hydrogen-helium atmosphere conceals a core of supercompressed carbonic ice and metallic hydrogen, sheathed in layers of ammonia and methane clouds that give it a bluish-gray tone when viewed from orbit.

Ravla

Astrographical Information

Galaxy

Milkyway

Galactic Arm

Orion

System

Craehlil System

Orbiting

Craehlil

Orbital position

Sixth Planet

Orbital Distance

7.98 AU (1,194,008,800 km)

Orbital characteristics

Aphelion

8.21 AU (1,228,365,750 km)

Perihelion

7.75 AU (1,159,651,850 km)

Semi-major axis

7.98 AU (1,194,008,800 km)

Eccentricity

0.065

Orbital period (sidereal)

7,727.3 days

Average orbital speed

6.25 km/s

Mean anomaly

124.3°

Inclination

• 2.4° – Craehlil's equator

• 1.7° – invariable plane

• 3.1° – J2000 ecliptic

Longitude of ascending node

197.4°

Time of perihelion

3,887.1 days

Argument of perihelion

84.9°

Moon(s)

27

Physical Information

Diameter

136,180 km (84,623.1 mi)

Mean radius

68,090 km (42,311.5 mi)

Equatorial radius

69,300 km (43,056.5 mi)

Polar radius

66,880 km (41,582.6 mi)

Flattening

0.066

Circumference

• 434,860 km; equatorial

• 420,023 km; meridional

Area

58,360,000,000 km²

Volume

1.322 × 10¹⁵ km³

Mass

2.28 × 10²⁷ kg

Mean density

1.22 g/cm³

Gravity (1 bar level)

21.4 m/s²

Moment of inertia factor

0.255

Escape velocity

53.1 km/s

Synodic rotation period

14.8 Hours

Sidereal rotation period

14.3 Hours

Equatorial rotation velocity

289.7 m/s

Axial tilt

19.3°

Axial Precession

17,800 years

Albedo

• 0.27 geometric

• 0.19 Bond

Temperature 52–118 K

Atmospheric Temperature

• -221°C (-365.8°F) Min

• -191°C (-311.8°F) Mean

• -155°C (-247°F) Max

Absorbed dose rate

2.7 μGy/h

Equivalent dose rate

3.9 μSv/h

Apparent magnitude

+3.9 to +6.1

Absolute magnitude (H)

-7.1

Atmosphere

Atmospheric pressure

estimated 0.9 MPa (1 bar level)

Composition by volume

• 84.2% Hydrogen

• 13.9% Helium

• 1.0% Methane

• 0.4% Ammonia

• 0.3% Hydrocarbons (complex trace volatiles)

• 0.2% Trace gases (Argon, Xenon, trace Neon)