{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T03:27:38.671Z","years_from_j2000":26.674,"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-62712","name":"HD 62712","class":"b8iv_blue_white_subgiant","category":"star","object_type":"B8IV blue-white subgiant","mag":6.42,"mag_band":"V","abs_mag":-0.081,"abs_mag_band":"V","distance_ly":651.0107391736416,"distance_method":"parallax","ra_deg":115.928835,"dec_deg":-38.201879,"epoch_ra_deg":116.166095,"epoch_dec_deg":-38.265354,"epoch_moved_arcsec":0.706,"pm_ra_mas_yr":-21.41,"pm_dec_mas_yr":15.59,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Puppis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-62712","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"spectral_type":"B8IV","color_index_bv":-0.119,"luminosity_solar":93.84259312370172,"radial_velocity_km_s":-6,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality C)","surface_temperature_k":13583,"proper_motion_ra_mas_yr":-21.41,"proper_motion_dec_mas_yr":15.59,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 62712"},{"catalog":"HIP","designation":"HIP 37666"},{"catalog":"HR","designation":"HR 3001"}],"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."}