Struct ObservatoryTable 

pub struct ObservatoryTable { /* private fields */ }

Lookup table from MPC observatory code to parallax coefficients.

Optionally carries an EarthOrientation kernel that rotates ground- based observatory positions from ITRF93 into ICRF. Without one, queries for ground observatories return Error::MissingEarthOrientation rather than falling back to an approximation.

Implementations

impl ObservatoryTable

pub fn from_json(path: &Path) -> Result<Self>

Load from obscodes_extended.json.

Expected format: JSON object whose keys are MPC observatory codes. Each value is one of:

• Ground/geocentric — has all four fields: Longitude (deg), cos (cos(geocentric_lat) × ρ/R_eq), sin (same with sin), Name.
• Space-based — has only Name; no surface coordinates.

Partial entries (e.g. Longitude without cos/sin) are rejected rather than silently filled with NaN/zero defaults.

pub fn with_earth_orientation(self, eo: EarthOrientation) -> Self

Attach an EarthOrientation so ground-observer states can be rotated from ITRF93 into ICRF.

pub fn get(&self, code: &str) -> Option<&ObservatoryEntry>

Look up an observatory by its MPC code.

pub fn len(&self) -> usize

Number of entries.

pub fn is_empty(&self) -> bool

Trait Implementations

impl Clone for ObservatoryTable

fn clone(&self) -> ObservatoryTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ObservatoryTable

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

Formats the value using the given formatter.