{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.676","julian_year":2026.676,"time":"2026-09-04T20:16:43.283Z","years_from_j2000":26.676,"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-62968","name":"HD 62968","class":"a3mf2_white_star","category":"star","object_type":"A3mF2 white star","mag":7.49,"mag_band":"V","abs_mag":-0.73,"abs_mag_band":"V","distance_ly":1436.8121245662817,"distance_method":"parallax","ra_deg":116.64729,"dec_deg":4.130599,"epoch_ra_deg":117.000962,"epoch_dec_deg":4.065173,"epoch_moved_arcsec":0.281,"pm_ra_mas_yr":-10.52,"pm_dec_mas_yr":0.34,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Canis Minor","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-62968","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07466+0408","age_years":270454650,"companions":[{"measured":2022,"magnitude":9.12,"components":null,"discoverer_code":"STF1137","separation_arcsec":3.1,"position_angle_deg":133}],"mass_solar":3.401,"radius_solar":13.708,"spectral_type":"A3mF2","color_index_bv":0.628,"luminosity_solar":170.60823890031244,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2015MNRAS.449.1401H, quality D)","surface_gravity_log_g":2.579,"surface_temperature_k":5098,"proper_motion_ra_mas_yr":-10.52,"proper_motion_dec_mas_yr":0.34,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":124.9729},"designations":[{"catalog":"HD","designation":"HD 62968"},{"catalog":"HIP","designation":"HIP 37942"}],"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."}