{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T12:55:50.969Z","years_from_j2000":26.672,"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-54914","name":"HD 54914","class":"g8iii_iv_yellow_giant","category":"star","object_type":"G8III/IV yellow giant","mag":8.58,"mag_band":"V","abs_mag":1.433,"abs_mag_band":"V","distance_ly":876.7644421995736,"distance_method":"parallax","ra_deg":107.38251,"dec_deg":-28.99138,"epoch_ra_deg":107.647132,"epoch_dec_deg":-29.034209,"epoch_moved_arcsec":0.117,"pm_ra_mas_yr":2.14,"pm_dec_mas_yr":-3.84,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Canis Major","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-54914","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07095-2859","age_years":697349130,"companions":[{"measured":2015,"magnitude":15.9,"components":null,"discoverer_code":"RSS 123","separation_arcsec":8.8,"position_angle_deg":354}],"mass_solar":2.397,"radius_solar":7.075,"spectral_type":"G8III/IV","color_index_bv":0.895,"luminosity_solar":23.27019378848164,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality D)","surface_gravity_log_g":3.023,"surface_temperature_k":5608,"proper_motion_ra_mas_yr":2.14,"proper_motion_dec_mas_yr":-3.84,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":38.1892},"designations":[{"catalog":"HD","designation":"HD 54914"},{"catalog":"HIP","designation":"HIP 34558"}],"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."}