{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.673","julian_year":2026.673,"time":"2026-09-03T22:28:27.525Z","years_from_j2000":26.673,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hd-222363","name":"HD 222363","class":"k1iii_orange_giant","category":"star","object_type":"K1III orange giant","mag":6.94,"mag_band":"V","abs_mag":0.277,"abs_mag_band":"V","distance_ly":701.4116842222099,"distance_method":"parallax","ra_deg":354.99951,"dec_deg":-47.326505,"epoch_ra_deg":355.360066,"epoch_dec_deg":-47.177762,"epoch_moved_arcsec":1.042,"pm_ra_mas_yr":38.8,"pm_dec_mas_yr":-4.63,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Phoenix","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-222363","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"23400-4720","age_years":317739100,"companions":[{"measured":2016,"magnitude":9.33,"components":null,"discoverer_code":"HDO 303","separation_arcsec":2,"position_angle_deg":67}],"mass_solar":3.202,"radius_solar":15.274,"spectral_type":"K1III","color_index_bv":1.027,"luminosity_solar":67.4838730870757,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1978MSS...C02....0H, quality C)","surface_gravity_log_g":2.155,"surface_temperature_k":4612,"proper_motion_ra_mas_yr":38.8,"proper_motion_dec_mas_yr":-4.63,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":100.5322},"designations":[{"catalog":"HD","designation":"HD 222363"},{"catalog":"HIP","designation":"HIP 116774"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}