EliteDangerousAlmanac / Astronomy / StarPhysics

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:93

What a scanned star burns, weighs and turns at.

Every calculation reads the figures the scan states, and answers null where the star states none it can use.

The maths is ported from the Canonn Research Group's canonn-signals. See ATTRIBUTIONS.md for credit and licence terms.

const ChandrasekharLimitSolarMasses: double = 1.44

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:102

The mass above which a white dwarf cannot hold itself up, in solar masses.

const NeutronStarMassDropOffSolarMasses: double = 2.51

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:108

The mass above which the game states no neutron star, in solar masses.

const SolarRadius: double = 695_700_000

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:99

The Sun's radius, in metres.

const SpeedOfLight: double = 299_792_458

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:96

The speed of light, in metres a second.

const TovLimitSolarMasses: double = 2.17

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:105

The mass above which a neutron star is expected to collapse, in solar masses.

static AbsoluteBolometricMagnitude(body): double?

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:146

How bright a star is across every wavelength.

BodyProperties

The star, as a scan states it.

double?

The magnitude, or null where the star states no radius or no temperature.

This is the whole output rather than the visible part, so it differs from the absolute magnitude the scan itself states.

ArgumentNullException

The star is absent.

static AssessMassStability(body): MassStabilityAssessment?

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:179

Whether a star weighs more than its class should allow.

BodyProperties

The star, as a scan states it.

MassStabilityAssessment?

The limit it has passed, or null where it has passed none, or the star states no mass or no class.

ArgumentNullException

The star is absent.

static ClassifyNeutronStar(body): NeutronStarClass?

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:226

What kind of neutron star a scan describes.

BodyProperties

The star, as a scan states it.

NeutronStarClass?

The class, or null where the star states no mass, no rotation period or no absolute magnitude.

The rotation period is read without its sign, because a star that turns the other way turns just as fast.

ArgumentNullException

The star is absent.

static MainSequenceLifetime(body): double?

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:127

How long a star burns on the main sequence, in millions of years.

BodyProperties

The star, as a scan states it.

double?

The lifetime, or null where the star states no mass.

ArgumentNullException

The star is absent.

static SchwarzschildRadius(body): double?

Defined in: dotnet/src/EliteDangerousAlmanac/Astronomy/StarPhysics.cs:164

How small a body must be squeezed to become a black hole, in metres.

BodyProperties

The body, as a scan states it.

double?

The radius, or null where the body states no mass.

ArgumentNullException

The body is absent.