{"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":"2026-09-04T04:27:09.434Z","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-36570","name":"19 Cam","class":"a0v_white_main_sequence_star","category":"star","object_type":"A0V white main-sequence star","mag":6.15,"mag_band":"V","abs_mag":0.919,"abs_mag_band":"V","distance_ly":362.7990682840864,"distance_method":"parallax","ra_deg":84.31278,"dec_deg":64.15469,"epoch_ra_deg":84.963834,"epoch_dec_deg":64.170449,"epoch_moved_arcsec":1.773,"pm_ra_mas_yr":1.06,"pm_dec_mas_yr":-66.45,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Camelopardalis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-36570","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05373+6409","companions":[{"measured":2016,"magnitude":9.81,"components":null,"discoverer_code":"HU 1107","separation_arcsec":1.5,"position_angle_deg":57}],"spectral_type":"A0V","color_index_bv":0.006,"luminosity_solar":37.35940922587999,"radial_velocity_km_s":-12,"spectral_type_source":"SIMBAD (quality C)","proper_motion_ra_mas_yr":1.06,"proper_motion_dec_mas_yr":-66.45},"designations":[{"catalog":"Bayer/Flamsteed","designation":"19 Cam"},{"catalog":"HD","designation":"HD 36570"},{"catalog":"HIP","designation":"HIP 26408"},{"catalog":"HR","designation":"HR 1857"}],"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."}