Delmira

Delmira, or Craehlil II, is the second planet of the Craehlil System within the Orion Arm of the Milkyway Galaxy, orbiting Craehlil at approximately 0.72 AU. Known for its active geology, brutal tectonics, and semi-stable atmosphere, Delmira exists in a constant state of subterranean flux—wracked by frequent earthquakes, thermal upwellings, and sulfurous geysers that shape its fractured surface. Though technically within Craehlil’s habitable zone, Delmira is far from comfortable: surface winds are corrosive, storms are electrically charged, and its magnetic field is patchy at best. Despite these conditions, it remains semi-habitable. Delmira’s crust is laced with heavy metals, thermogenic crystal veins, and volatile isotopes.

Delmira

Astrographical Information

Galaxy

Milkyway

Galactic Arm

Orion

System

Craehlil System

Orbiting

Craehlil

Orbital position

Second Planet

Orbital Distance

0.72 AU (107,710,466 km)

Orbital characteristics

Aphelion

0.75 AU (112,198,403 km)

Perihelion

0.69 AU (103,222,529 km)

Semi-major axis

0.72 AU (107,710,466 km)

Eccentricity

0.038

Orbital period (sidereal)

257.2 days

Average orbital speed

34.1 km/s

Mean anomaly

164.9°

Inclination

• 2.6° – Craehlil's equator;

• 1.8° – invariable plane;

• 2.9° – J2000 ecliptic

Longitude of ascending node

49.2°

Time of perihelion

18.7 days

Argument of perihelion

116.4°

Moon(s)

0

Physical Information

Diameter

10,218 km (6,349.3 mi)

Mean radius

5,109 km (3,174.6 mi)

Equatorial radius

5,131 km (3,188.3 mi)

Polar radius

5,082 km (3,157.6 mi)

Flattening

0.0095

Circumference

• 32,132 km; equatorial

• 31,998 km; meridional

Surface area 329,073,000 km²

• Land: 302,430,500 km²

• Water: 26,642,500 km² (8.1% of Delmira's surface area)

Volume

5.59 × 10¹¹ km³

Mass

5.12 × 10²⁴ kg

Mean density

6.42 g/cm³

Surface Gravity

13.76 m/s²

Moment of inertia factor

0.314

Escape velocity

13.6 km/s

Synodic rotation period

33.1 hours

Sidereal rotation period

31.8 hours

Equatorial rotation velocity

437.3 m/s

Axial tilt

18.9°

Axial Precession

14,800 years (moderate axial drift from uneven internal mass distribution)

Albedo

• 0.27 geometric

• 0.21 Bond

Temperature 205–692 K

Surface Temperature

• -68°C (–90.4°F) Min

• 39°C (102.2°F) Mean

• 102°C (215.6°F) Max

Surface absorbed dose rate

33.4 μGy/h

Surface equivalent dose rate

38.7 μSv/h

Apparent magnitude

–1.9" to 3.3"

Absolute magnitude (H)

5.41

Atmosphere

Surface pressure

181.672 kPa; 1.79 atm (at sea level)

Composition by volume

• 58.4% Nitrogen (dry air)

• 22.5% Oxygen (dry air)

• 7.0% Sulfur dioxide

• 4.2% Carbon dioxide

• 2.3% Water vapor (variable)

• 2.1% Argon

• 1.1% Methane

• 1.4% Reactive particulates (dust, industrial ash)

• 0.9% Trace gases (xenon, chlorides, polyaromatic hydrocarbons)