Struct Equatorial 

pub struct Equatorial { /* private fields */ }

An equatorial sky position (right ascension, declination) tagged with an Epoch. After construction, ra ∈ [0, 360)° and dec ∈ [-90, 90]°.

Implementations

impl Equatorial

pub fn new(ra: Angle, dec: Angle, epoch: Epoch) -> Result<Self>

Construct from RA/Dec angles at an epoch, validating domains.

Errors

Error::OutOfRange if RA ∉ [0, 360), Dec ∉ [-90, 90], or the epoch year is non-finite.

pub fn j2000(ra: Angle, dec: Angle) -> Result<Self>

Construct a J2000 position from RA/Dec angles.

Errors

See Equatorial::new.

pub fn parse(ra: &str, dec: &str, epoch: Epoch) -> Result<Self>

Parse RA and Dec strings (sexagesimal or decimal) at an epoch.

RA accepts HH:MM:SS(.s), HH MM SS, or a bare decimal in degrees (sexagesimal RA is hours ×15). Dec accepts ±DD:MM:SS(.s), ±DD MM SS, or decimal degrees.

Errors

Error::ParseCoord on malformed input; Error::OutOfRange on domain.

pub fn parse_j2000(ra: &str, dec: &str) -> Result<Self>

Parse a J2000 position from RA/Dec strings.

Errors

See Equatorial::parse.

pub fn ra(self) -> Angle

Right ascension.

pub fn dec(self) -> Angle

Declination.

pub fn epoch(self) -> Epoch

Reference epoch.

pub fn to_degrees(self) -> (f64, f64)

(ra_degrees, dec_degrees).

pub fn ra_to_sexagesimal(self, decimals: usize) -> String

Format RA as HH:MM:SS.sss with the given number of fractional-second digits.

pub fn dec_to_sexagesimal(self, decimals: usize) -> String

Format Dec as ±DD:MM:SS.sss with the given number of fractional-second digits.

Trait Implementations

impl Clone for Equatorial

fn clone(&self) -> Equatorial

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Equatorial

impl Debug for Equatorial

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Equatorial

fn eq(&self, other: &Equatorial) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Equatorial